ORDER MYRIAPODA. 125 



formed like a lip, quadrified, with articulated divisions, or 

 resembling little feet, and which by its situation, corresponds 

 to the largest of the Crustacea. Then come two pairs of 

 little feet, of which the second, in the form of large crotchets, 

 in many species, appear to replace the four jaws, or at least 

 the two, as well as the lower lip of insects ; these may be 

 considered as species of buccal feet. The antennae, two in 

 number, are short, a little thicker towards the end, or almost 

 filiform, with seven articulations in some species, a great 

 number in others, and setaceous ; their eyes are usually 

 formed of an union of smooth eyes, and if, in others, they 

 have a cornea with facets, these lenses are, nevertheless, 

 proportionally larger, rounder, and more distinct than 

 those of the eyes of insects. Their stigmata are often very 

 small, and their quantity, in proportion to that of the rings, 

 is usually more considerable than in other insects, in which, 

 at the most, it amounts to no more than eighteen or twenty. 

 The number of these rings and that of the feet, augment 

 with age, a character, which strongly distinguishes the 

 myriapods from other insects, the latter being always born 

 with the number of segments proper to them, and all their 

 feet being developed at once, either at the period of birth 

 or when they pass into the nymph state. M. Savi, the son, 

 professor of Mineralogy at Pisa, who has made a peculiar 

 study of the iuli, has observed, that when they issue from 

 the egg, they are devoid of these organs : these animals, 

 therefore, undergo a true metamorphosis. In some, the 

 male sexual organs are always placed after the seventh pair 

 of feet, on the sixth or seventh segment of the body, and 

 those of the female, near the origin of the second feet ; in 

 the others, these sorts of organs are situated in the usual 

 place, near the posterior extremity of the body. The posi- 

 tion of the masculine parts of the first, compared with that 

 which they have in the Crustacea and arachnida, would seem 



