1885.] J-"'-' IMeiuert, 



four-fifths of the length of the claw. The anal legs seem to be 

 clawless. 



The antenna? are setiform, very long, and consist of several 

 hundreds of very minute joints, which are, however, united into 

 two or three fully distinguishable principal joints. 



The eyes are large, very prominent and composite, the num- 

 ber of ocelli may be some two hundred or more. 



In the preceding pages I have already mentioned the want of 

 spiracles. 



The palpi maxillaries are long, slender, four-jointed ; the first 

 three are furnished on the front edge with long stout bristles. 

 The fourth or last joint has preserved the same shape as the 

 preceding ones, and has not, as in the Lithobiini and the other 

 Chilopoda, taken the shape of a claw. The two halves of the 

 sternum of the (fourth) metamer are not united ; each part bears 

 four long stout bristles on the front edge. 



The coxa? are all plain, without glands or glandular pores. 



The forceps of the female organs of generation consists of a 

 pair of styli, the first joints of which are nearly joined together 

 with the posterior half of their inner edge, while the forward part 

 is separated and often furnished with a small brush of hair at 

 the corner. As these styli are bent against each other, the shape 

 of the forceps and of the sinus between the two styli is altered 

 and therefore no characters of great value can be drawn from 

 this organ. 



Most of the characters in use to-day are valueless, except the 

 color and the proportions of the length of the legs and of the 

 antenna? to the body; we seldom find true characters used, but 

 ordinarily the descriptions are drawn now from one part of the 

 body, now from another. Even the characters employed by such 

 accurate observers as Torath and Latzel are partly due either 

 to a fortuitous want, or are characters common to the whole 

 genus. It is evident that a very great number of different spe- 

 cies are needed, before we can hope to find the true special 

 characters. Yet it is far from my intention to claim that I 

 have been more fortunate than my predecessors, and although I 

 believe I have shown man}- deficiencies in the characters in 

 use, I do not mean that I myself have found the right ones ; 

 but I also have had too little material and this must be my excuse. 



TltOC. AMEB. PHILOS. S0C. XXIII. 122. V. PRINTED DECEMBER 17, 1885. 



