ON THE CHILOPODA OF NORTH AMERICA. 27 



bilido vel trifido ; superfieie ventrali brunneo-olivacea ; appendicibus analibus lateralibus profunde dense 

 punctatis, modice eloDgatis, singula spinis apiealibus 2 — 3, apicibus haud incurvatis. 

 S. bystina, Wood, Proe. Acad. Nat. Sci. 1861, p. 10. 



The head is of moderate size. The dental lamina are rather broad, their teeth 

 small, almost tuberculiform. The scuto-episcutal sutures are traceable, but not So 

 distinct as the sterno-episternal. The first scutum is very short, the penultimate 

 very large, with its sides strongly arched. The legs are slightly compressed. Our 

 brown specimen has some of its scuta margined posteriorly with green. We formerly 

 described this species as doubtfully coming from Florida ; we now believe it to be a 

 native of California. This species differs from subspinipes in the shape of hind pair 

 of legs, which are parallelopipedal, and have the margins much more acute, as well 

 as in the proportionate length of the basal and tibial joints. 



Specimen belonging to the Smithsonian Institution. 

 333 | 1 | California. | ? | | TJnc. 2j | 



S. Copeiana, n. sp. — S. luteolo-castanea prasino sparsa; eapite sparse minute punctato, segmento cephalico 

 parvo, subrotundo, convexo, basali magno j antennis 25 articulatis ; labio rubri-castaneo ; laniinis deo- 

 talibus subelongatis, margine antico fere recto ; dentibus 8, nigris, utrinque duobus intiruis eoadunatis, 

 extimis duobus majoribus, conicis, sejunctis ; pedibus luteolis modice compressis ; pari postremo robusto, 

 articulo basali tibiali vix longiore, supra complanato, intus 4 — 6 spinis, infra 9 — 17 spinis in serie 

 quadruplici (iuterdum inordinatim) dispositis, processu angular; spinis 2 — 5; appendicibus analibus 

 lateralibus dense profundeque punctatis, singula spinis apiealibus 3 — 5, et marginalibus 1 — 3 ; super- 

 fieie ventrali sordide luteola. 



The head is somewhat peculiar ; it is not so broad as the posterior portion of the 

 body. The cephalic segment is convex, subround, sometimes somewhat truncate 

 posteriorly. Its breadth is just about equal to its length, but owing to the convexity 

 appears less. The basilar segment is much larger than the cephalic, and has the 

 prebasilar fold well marked. The posterior portion of the scuta are often margined 

 with green, and, in some specimens, the anterior part of the body is mottled with this 

 color. In one individual the antennae are of a pea-green tint, generally they corre- 

 spond in color with the feet. The preterminal scutum is large, with its lateral mar- 

 gins strongly arched. The terminal scutum is medianly slightly subcarinate. The 

 sterno-episternal sutures are better marked than the scuto-episcutal, which are, how- 

 ever, quite evident. It is noticeable that the terminal scutum has a single median, 

 instead of two lateral sutures. Preanal scale rather large, much narrowed and very 

 slightly emarginate posteriorly. Where the marginal spines of the lateral anal ap- 

 pendages exceed two in number, some of them are generally very small and situated 

 at or near the base of the terminal process. I have named this species in honor of 

 Edward D. Cope, Esq., with whom it has been my good fortune to have been asso- 

 ciated since the earliest dawn of our tastes for natural history. 



