ON THE CTIILOPODA OF NORTH AMERICA. .;.; 



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

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



218 

 3G1 



2 I Sitooda, Japan. N. Pacific Expl. Exp. I Wm. Stimpson, M. D. Unc. 4£ 

 1 | Niphon. " " " " « 41 



Gen. .2. CORMOCEPHALUS, Newp.* 



Segmenta podopliora 21. Segmentum cephalicum breve, abrupte truncaturu, haud iinbricatum. 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 been found in North America, but there are several specimens 

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

 They are as follows : 



G. rdbriceps, Newp. Linn. Trans, xix. p. 420, et Catal. of Brit. Museum, Myriapoda, p. 72. 



Scolopendra ruhriceps, Newp., Ann. Mag. Nat. Hist. xiii. p. 99; Dieffenb. New Zealand, ii. p. 270; Ger- 

 vais, Apteres iv. p. 274. 



145 I 9 I New Zealand. | U. S. Expl. Exp. | ? | Unc. 2— 4J | In very good condition. 



C. VIRIDIS, n. sp. — C. viridis; pedibus antennisque dilute viridibus; capite obscure minute punetato, sub- 

 segmento prebasali conspicuo, segmento basali modice magno ; antennis pubescentibus; dentibus labiali- 

 bus 4, latis sed acutis, utrinque intimo obscure bifido ; scuto postremo postice valde arcuato, martini- 

 bus lateralibus valde elevatis ; pedibus postremis gracilibus, valde elongatis, articulo basali multispinoso, 

 tibiali subequali ; appendicibus analibus lateralibus rude punctatis, elongatis, singula spinulis apicalibus 

 4 — 5 minutis et altero marginale armata. 



Sterno-episternal 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 I 1 I Hong Kong. | N. Pacific Expl. Exp. | Wm. Stimpson, M. D. | Unc. 1£ | 

 C. FiECUNDUS, Newp., Linn. Trans, xix. p. 421, et Catal Brit. Mus. 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. fxcunda, Gervais, Apteres, iv. p. 272. 



362 I 2 I New Holland. | U. S. Expl. Exp. | ? | Unc. 2^ | In bad condition. 



C. monilicornis, 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 intimis utrinque arete coadunatis, externo sejuncto; labio leviter punetato; scutis quadrutis, 

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

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

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

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



*Linn. Trans, xix. p. -119. 

 9 



