The Animal Kingdom:

abdomen allied America anal animals antenna appears appendages articulated basal joint base beak beneath birds body bones branchiae British species canines cavity characters claws colour columella common composed compressed conical crest Crustacea dilated distinct distinguished division dorsal dorsal fin eggs elongated elytra external extremity eyes Fabr feathers feet female filaments filiform fins fishes fleshy four front furnished genera genus greater number head incisors inhabit insects intestines known labrum Lamarck larva lateral Latr Leach legs length less Linn males mandibles margin maxillae maxillary palpi membranous molars mouth muzzle narrow nearly neck nostrils notched operculum organs oval pair pectorals peculiar plates plumage pointed posterior preceding remarkable resemble round segments shell short shorter side skin slender species spines spiracles sternum tail teeth terminated thorax tibia toes tooth trachea transverse tribe tubercles upper valves ventrals vomer wings