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abdomen alitrunk anal analogous angle animals antennae apex appears appendages Arachnida areolets armed articulation base bees beetles body bristles butterfly caterpillar cavity claws cocoon Coleoptera colour consists Costal covered coxa Crustacea Diptera distinguished ditto Dytiscus eggs elevated elytra eyes female folds former furnished Geer genera genus hairs head Hemiptera hexapod Homopterous horns Hymenoptera Ibid insects instances intermediate joints kind labium Lamellicorn larvae Latr Latreille latter legs Lepidoptera Libellulina Linn lobe Locusta longitudinal MacLeay male mandibles margin maxilla membrane mesothorax metathorax moth motion mouth Myriapoda nearly nervures Neuroptera observed Order organs Orthoptera pair palpi perfect insect piece Plate VIII Plate XXVII posterior prolegs prothorax ptera pupa Reaum Reaumur regard remarkable resembling scutellum seems segments sexes shape side skin sometimes species spines spiracles substance tegmina terminates thigh thorax tibia tion transverse tribe Trichoptera trunk upper usually ventral wings XXVI
Page 127 - ... temple like the blinders of a horse ; and next, having by means of the joint at your chin let down the whole apparatus and uncovered your face, employ them in seizing any food that presented itself, and conveying it to your mouth. Yet this procedure is that adopted by the larvae provided with this strange organ.
Page 662 - ... are greatly elongated, and are united to form the haustellum, or true proboscis, which contains a tube for suction. Feet. — These organs vary with the habits of life in different species. The limb consists of five divisions: the coxa or hip, the trochanter, the femur or thigh, the tibia or shank, and the tarsus or foot.
Page 127 - ... plates, which would project, from each temple, like the blinders of a horse ; and next, having, by means of the joint at your chin, let down the whole apparatus, and uncovered your face, employ them in seizing any food that presented itself, and conveying it to your mouth.
Page 292 - I placed it upon my arm, where it kept pacing about for the space of more than an hour ; when all its parts appearing consolidated and developed, and the animal perfect in beauty, I secured it, though not without great reluctance, for my cabinet — it being the only living specimen of this fine fly I had ever seen. To observe how gradual, and yet how rapid, was the development of the parts and organs, and particularly of the wings, and the perfect coming forth of the colours and spots, as the sun...
Page 210 - It is now wholly out of the skin, against one side of which it is supported, but yet at some distance from the leaf. The next step it must take is to climb up to the required height. For this purpose it repeats the same ingenious manoeuvre, making its cast-off skin serve as a sort of ladder, it successively with different segments seizes a higher and a higher portion, until in the end it reaches the summit, where with its tail it feels for the silken threads that are to support it.
Page 282 - Attacus paphia when prepared to assume the imago, discharges from its mouth a large quantity of liquid, with which the upper end of the case is so perfectly softened as to enable the moth to work its way out in a very short space of time, an operation which, he says, is always performed in the night.
Page 127 - Yet this procedure is that adopted by the larvae provided with this strange organ. While it is at rest, it applies close to and covers the face. When the insects would make use of it, they unfold it like an arm, catch the prey at which they aim by means of the mandibuliform plates, and then partly refold it so as to hold the prey to the mouth in a convenient position for the operation of the two pairs of jaws with which they are provided.
Page 126 - In other larvae this part is usually small and inconspicuous, and serves merely for retaining the food and assisting in its deglutition, but in these it is by far the largest organ of the mouth, which, when closed, it entirely conceals, and it not only retains, but actually seizes the animal's prey by means of a very singular pair of jaws with which it is furnished;. Conceive your under lip (to have recourse...
Page 82 - I placed half a dozen of these boats upon the surface of a tumbler half-full of water : I then poured upon them a stream of that element from the mouth of a quart bottle held a foot above them. Yet after this treatment, which was so rough as actually to project one out of the glass, I found them floating as before upon their bottoms, and not a drop of water within their cavity*.
Page 296 - ... ephemera fixes itself, by its claws, in a vertical position, to some convenient object, and withdraws every part of the body, even legs and wings, from a thin pellicle which has enclosed them like a glove the fingers ; and so exactly do the exuviae, which remain attached to the spot where the ephemera has disrobed itself, retain their former figure, that I have more than once, at first sight, mistaken them for the perfect insect.