12 ON THE CIIILOPODA OF NORTH AMERICA. 



but densely and minutely punctate, closely approximate, gibbosities. Tbe stomata 

 are so placed as to look upwards and backwards. 



Whether tins is a new species or not we are unable to say. We certainly can dis- 

 cover scarcely any differences between it and similar alcoholic specimens of C. forceps. 

 And where it does differ, it appears to approximate to G. coleoptrata. We have given 

 a description of it to aid any one who may be more fortunate than ourselves in his 

 material. 



| 253 | 1 [ Japan. | N. Pacific Expl. Exp. | W. Stiaipson, M. D. | unc. |. | | 



C. tuberculata, ii. sp. — C. saturate viridis, obsoletissinie trifasciuta; capite brunneo, sicut in C. for- 

 ceps notato, antice piloso ; scutis tuberculis rainutissimis asperatis, utrinque tuberis duobus obscuris, 

 postice altero mediano dilute brunneo; marginibus postice rotundatis, minute crenulatis, rarissime spino- 

 sis ; scuto postremo parvissimo, vix asperato, baud eiuarginato; pedibus saturate viridibus annu- 

 laris, spinis gracillimis curvatis ; artieulo uietatarsali primo secundo fere quater longiore, et sequentibus 

 quatuor conjunctis fere requali. 



Eyes very prominent. Ventral surface a light, slightly greenish, brown. Legs with 

 usual complement of spines, which are, however, more curved and slender than they 

 are commonly found. Antenmn apparently not quite twice as long as the body. 

 Femur with a single very dark complete annulus, tibia and tarsus with two each. 

 Metatarsal pubescent. Sterna with the usual median groove. The coloring of our 

 specimen is essentially different from that of C. forceps, from which it further differs 

 in the following particulars: Firstly, in the surface of the scuta; secondly, in the 

 spines on the legs ; thirdl}', in the proportions of metatarsa3. 



| 254 | 1 | Hong Kong. | Nortb Pacific Expl. Exp. | W. Stimpson, M. D. | Uuc. i. | | 



Fam. II. LITHOBIIDJE, Newp* 



Scuta dorsa'.ia 15,' inrequalia. Pedum posteriorura coxae excavationibus in facie depressa. Antennae 



elongate, setacese. Ocelli numerosi vel pauces. 



The Lithobiida? have the head large and well armed. The antennae setaceous, 

 elongate. The eyes stemmatous. In two of the genera, they are small and numerous, 

 but in the third large and but two in number. The mandibular teeth are strong, very 

 acute, and probably provided with a poison gland at their base, although it has never 

 been anatomically demonstrated in this family, that we are aware of. The scuta are of 

 two kinds, — a large one alternating with a small one. The females have the anal 

 segment somewhat elongate inferiorly and provided with a pair of forceps on each side. 

 In the males these are replaced by a pair of minute styliform appendages. The 

 posterior coxa? have a plain depressed surface with indentations, or, as we have 

 called them, excavations on it. We have never seen a specimen of the type of the 



* Linn. Trans, xix. p. 275. 



