ON THE CHILOPODA OF NORTH AMERICA. 33 



As to the less important characters given by Mr. Newport in his diagnosis. We 

 find in our specimens almost ever^ shade of variation between the two. 



248 

 361 



2 I Simoda, Japan. N. Pacific Exp]. Exp. I Win. Stimpson, M. 1>. Uoc. 4! I 



1 | Niphon. ' '• " I ' | 



Gen. 2. CORMOCEPHAU'S, Newp.* 



Scgnienta podophora 21. Segmentuni cephalicum breve, abrupte truucatuui, baud iiubrieatum. Spiracu- 



lorum valvularium paria 9. 



Mr. Gervais does not recognize this genus as distinct. But it seems to us perfectly 

 so. It has not as yet hern found in North America, hut there are several specimens 

 of the genus from foreign countries, in the collection of the Smithsonian Institution. 

 They are as follows : 



C. rubrioeps, Newp. Linn. Trans, xix. p. 120, et Catal. of Brit. Museum, Myriapoda, p. 72. 



Newp., Ami. Mag. Nat. Hist, xiii. p. !»!» ; Dieffenb. New Zealand, ii. p. 270 j Qer 

 vais, Apteres iv. p. 27 I 



145 | 9 | New Zealand. | 1'. S. Kxpl. Exp. | ? | Unc. 2 — 1] | In very good condition. 



C. vinous, n. sp. — C. viridis; pedibua antennisque dilute viridibus; capite obscure minute punctato, sub- 

 scmento prebasali conspicuo, segmcnto basali modice magno ; antennis pubescentibus; dentibus lubiali- 

 bus 4, latis sed acutis, utrini|ue intimo obscure bifido; scuto postremo posticc valde arcuato, margini- 

 bns lateralibus valde elevatis ; pedibua postremis gracilibus, valde elongatis, articulo basali multispinoso, 

 tibiali Bubequali ; appcndicibus analibus lateralibus rude punctatis, elongatis, singula spinulis apicalibus 

 4 — 5 minutis et altero marginale armata. 



Sterno-epistemal and scuto-episcutal sutures well marked. Scuta obscurely bor- 

 dered posteriorly by a light band. Lateral margins of many of them slightly raised. 

 Feet somewhat compressed. 



251 | 1 | Hong Kong. | N. Pacific Kxpl. Exp. | Win. Stimpson, M. D. | Unc. Ii | 

 C. F.i Newp.. Linn. Trans, xix. p. 421, et Catal Brit. 3Ius. Myriap. p. 74. 



Our specimen differs from the description in the length of the tibia of posterior 

 legs not equalling that of the femur. 

 S./xcunda, Gervais, Apteres, iv. p. 272. 



362 | 2 | New Holland. | U. S. Expl. Exp. | ? | I "no. 2! | In bad condition. 



C. MON1LICORNIS, n. sp. — C. brunneus, capite polito ; antennarum articulis brevibus, distalibus fere globosis 

 et leviter pubescentibus; laminis dentalibus modice elongatis, antice leviter angustatis; dentibus 8, 

 tribus intiuiis utrinque arete coadunatis, externo sejuncto; labio leviter punctato; scutis quadratis, 

 postice abrupte truncatis, posteriorum lateribus elevatis; pedibus compressis ; pari postremo robusto, 

 articulo femorali tibiali vix requali, superficie superiore spinula unica, interiore 3 — 4, inferiore 5 — 6 in 

 serie triplici dispositis, processu angulari bifido, articulo tarsali tibiali fere wquali; appendicibus anali- 

 bus lateralibus rude punctatis, brevibus, obtusis, spina apicali unica. 



!. Trans, xix. p. 410. 

 9 



