92 Mr. R. T. Pocock on the 



Linn. Soc, Zool. xxiii. pis. iii., iv.). Labial palpi 4-joInted, 

 first joint at least as long as the other three together, 3 shortest, 

 2 hardly longer, 4 narrow and very little longer than 2. 

 Maxillary palpi 6-jointed ; the joints subequal, 5 shortest. 

 The known species may be separated thus : — 



A. Large species : 



(1) Stigma ferruginous .... P. mexicanorum, Ckll. (Mexico.) 



(2) Stigma dark P. asclepiadis, Ckll. (New Mexico, 



Colorado ; also Fedor, Texas, as I 

 learn from Mr. Fox.) 



B. Small species : 



(1) Tarsi piceous in $ P. trifoliata, Ckll. (New Mexico.) 



P. maunda, CkU. (Texas.) 



(2) Tarsi rufous in $, yel- 



lowish white in J .... P.heteromorpha,CW\. (New Mexico.) 



It is not worth while to give the full distinguishing cha- 

 racters here, as they are given in connexion with the detailed 

 descriptions. 



Mesilla, New Mexico, U.S.A., 

 June 2, 1896. 



XII. — Description of a new Species of the Leaf-footed Genti- 

 jjede (Alipes) from Nyasaland^ together with Notes upon 

 the previously described Species of the Genus, By li. I. 

 Pocock. 



The generic synonymy of this interesting centipede, as first 

 pointed out, 1 believe, by Kohlrausch (Arch. Nat. 1881, 

 pp. 76-77), is as follows : — 



Alipes, Imhoff, Verh. naturforschenden Ges. Basel, i. p. 120, pi. i., 

 Sept. 4th, 1854. (Type multicast in, Imh.) 



EucoRYBAS, Gerstaecker, Stettin, ent. Zeitsch. xv. p. 309, pi. ii. fig. 1, 

 Oct. 1854. (Type crotahis, Gerst.) 



The three species of the genus tliat have been hitherto 

 established appear to me to be readily recognizable forms, 

 though most authors seem willing to admit only two of them. 

 To these three a fourth has here been added. 



Alipes multicostis, ImhofF. 

 Alipes multicostis, Imhotf, op. cit. p. 120, pi. i. 



This species was originally recorded from the Gold Coast, 

 on the Gulf of Guinea, and specimens of presumably the 



