Mr. Newport on the Class Myriapoda, Order Chilopoda. 419 



Genus 1 1 . Scolopendropsis, Brandt. 



OceWi utrinque 4. Seffmentum cephalicum truncatmn. Pedum paria 23. Appendices anales 

 laterales obtusae, nee spinosae nee mucronatae. 



1. Scolopendropsis Bahiensis, Brandt, Reeueil, &c. p. 73-75- 



This appears to be a good genus, established by Brandt, as indicated by the 

 number of legs, truncated cephalic segment, and absence of spines to the 

 lateral appendages. It differs from Scolopocryptops in possessing ocelli, and 

 in the form of the cephalic segments. As I have not yet obtained a speci- 

 men, the characters given are drawn up from Brandt's description. 



Subfamilia 3. Cormocephalin^. ■ 



Segmenta cephalicum basilaregue truncata. AntenncE l7-articulatae. Labium angustum; 

 dentibus parvis. Spiracula valvularia. 



The Cormocephalince differ from the Scolopendrince in having the cephalic 

 segment abruptly truncated and not imbricated. In this respect they resemble 

 the Heterostominue, from which, however, they differ most completely in the 

 number of joints to the antennae, the structure of the teeth, and the number 

 and structure of the respiratory organs. They seem to form one distinct 

 genus, which is divisible into three groups ; first, with the posterior legs slen- 

 der and elongated ; secondly, with the posterior pair of legs short and cla- 

 vated ; and thirdly, a subgenus, Rhombocephalus. 



Genus 12. Cormocephalus*, Newp. 



Antenna breves, attenuatae. Seffmentum cephalicum breve, abrupte truneatum. Spiracu- 

 lorum valvularium paria 9. Segmenta podophora 21. 



A. Pedes postremi graciles, elongati. 



1. Ccrrm. rubriceps, capite labio mandibulisque saturate rufis, corpore nigreseenti subcom- 

 planato postice valde attenuate antiee dilatato, pedibus antennisque rufescenti-olivaceis, 

 pedibus postremis in margine superiore interne 3-spinosis in superficie interna hiferiori- 

 que spinis 7 oblique biseriatis. — Long. une. 4f . 



* Kopfxbs, a trunk, and KefaXri, head. 



