ON THE CHILOPODA OF NORTH AMERICA. ^7 



bititlo vol trifido ; superficie ventrali brunneo-olivacea ; appendicibua analibus lateralibus profunde dense 

 punotatis, modice eloDgatis, singula Bpinia apicalibus - — 3, apioibus haud incun 

 s i, Wood, Proo. Acad. Nat. Sci L861, 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 svhspinipea in the shape of hind pair 

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

 as id the proportionate Length of the basal and tibial joints. 



Specimen belonging to tin Smithsonian Institution. 

 333 | 1 | California. | ? | | Unc. 2-t [ 



S Com i \n \, n. sp. — S. luteolo-castanea prasiim eparsa; capita sparse minute punctato, segmcuto cephalico 

 parvo, subrutundo, convexo, basali magno ; antennis 25 articulatis ; labio rubri-castaneo ; laminis deu- 

 talibua subclongatis, marginc antieo fore recto ; dentibus s, nigris, utrinque duobus intimis coadunatis, 

 extimis duobns uiajoribus, conicis, sejunctis; pedibus luteolis modice oompressia ; j>ari postremo robuato, 

 articulo basali tibiali vix loogiore, supra complanato, intus 4 — 6 spinis, infra — 17 spinia in aerie 

 quadruplici (interdum inurdinatim) dispoaitis, proeessu angular! spinis - — ■">; appendicibua aualibua 

 lateralibus dense profundeque punotatis, siugula spinis apicalibas 3 — 5, et marginalibus 1 — 3; super- 

 ficie ventrali aordide lut 



The head is somewhat peculiar; it is nut 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 subcarinatc. 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. 



