414 Mr. Newport on the Class Myriapodaj Order Cliilopoda. 



Cephalic segment small, with the posterior margin straight ; basilar segment large : an- 

 tennae ferruginous, and pubescent at the apex : mandibular tooth rather small : labium 

 smooth : dental plates large, elongated, subquadrate, with the posterior external angle 

 produced, deeply punctured : teeth eight, large, black, triangular and very acute, with 

 the margin a Uttle arched : basilar joint of the posterior pair of legs slightly elongated, 

 convex on the upper surface, with the external margin rounded : internal margin with 

 five large acute spines, four of which are somewhat approximated, and arranged two 

 and two in a double series ; the fifth or angular one very large, acute. Internal and 

 inferior surfaces rounded, with five large acute spines, in two longitudinal series, two 

 on the internal inferior margin, and three in the external series; tibial joint sub- 

 quadrate, smooth, with the margins subacute. Lateral anal appendages elongated, 

 punctured, bifid at the apex, with one strong spine on the inferior external margin : 

 posterior superior margin compressed, with three spinous tubercles, the two posterior 

 of which are very small and approximated laterally. Preanal scale four-sided, short, 

 with a longitudinal impression, with the posterior border deeply emarginated. 



On examining Dr. Leach's specimen very carefully, and comparing it with 

 the description and figure given by M. Gervais of his Scolopendra Eydouxiana, 

 I much suspect that these two species are identical. I am strengthened in 

 this opinion by the fact that both are from the same country, Africa, as a 

 ticket in Dr. Leach's handwriting, indicating the habitat, is attached to his 

 specimen in the British Museum. A second specimen agreeing exactly with 

 Leach's was brought from Congo by Mr. Curror. These specimens agree with 

 M. Gervais' description in every particular, excepting the two series of spines 

 on the inferior surface of the posterior pair of legs. In this respect I am fain 

 to imagine that the innermost of these series might have been regarded by 

 M. Gervais as belonging to the internal surface of the joint; or that it might 

 be wanting in his specimen. Several specimens recently brought home by 

 Mr. Fraser, of the Niger expedition, agree with Dr. Leach's specimen in every 

 particular, excepting one specimen, which has had one of its legs reproduced, 

 and in this instance the spines were more numerous and less regular than in 

 the others. 



2. Heter. spinosa (Tab. XL. fig. 8.), olivacea, mandibulis labio pedibusque postremis fer- 

 rugineis, dentibus 6 maximis, spiraculorum laminis saturate brunneis, pedum postre- 

 morum articulo basali robusto subconico spinis 5 validis alternantibus in margine inte- 

 riore spina angulari acuta in mare crassa dilatata (o) in foemina magna : spinisque totidem 



