THE MYRIAPODA OF NORTH AMERICA. 175 



S. LANAT1PES. 



S. aurantiaca ; pedibus compressis, flavis; capite inandibulis labio sternisque minute punctatis; segmento 

 cephalico subovato ; labio medio emarginato fere sicut in S. gracile, margine antico rotundato; pedibus postremis 

 modice robustis, singulo spinis duabus S. sexspinosa; illis similimis, articulo tibiali basali fere aequali ; tibia tarso 

 metatarsoque pubescentibus ; appendicibus analibus lateralibus brevibus, rude punctatis, singula spina apicali 

 alteraque minutissima in angulo superiore posteiiore; squama preanali modice lata, convexa, margine postico 

 interdum late emarginato. (Figs. 16, 17.) 



Orange; feet compressed, yellow; head, mandibles, labium, and sterna minutely punctate; cephalic segment 

 subovate; labium medianly emarginate, almost as in S. gracile, the anterior margin rounded; last feet rather 

 robust, each with two spines similar to those of S. sexspinosa; tibial and basal joints about equal ; tibia, tarsus, 

 and metatarsus pubescent; lateral anal appendages short, rudely punctate; each with an apical spine, and another 

 very minute one upon the superior posterior angle ; preanal scale rather broad, convex ; its posterior margin some- 

 times broadly emarginate. 



S. lanatipes, Wood, Journ. A. N. S., new series, vol. v, 1863, p. 39. 



This species is closely allied to S. gracilis, and it is possible that further specimens may 

 show that the characters on which I 



i • ! ,™ Fig- 16- Fig- 17. 



rely in separating them vary, ihe 

 differences are as follows : The labium 

 (Fig. 16) closely resembles that of the 

 first described species, but has the cha- 

 racter not so well marked. The pos- 

 terior pair of legs are more robust, with 

 the tibia about equal to the femur in 

 length, and pubescent. The lateral 

 anal appendages are shorter and sepa- 

 rated inferiorly by a much narrower space. The preanal scale is rather broader and more 

 bent over the lateral anal appendages ; and, finally, this species seems to attain to a larger 

 size. Length, 2i inches. 



Huh. California. — Smithsonian Collection. 



Fam. V. GEOPHILID^, Leach* 



Segtnenta numerosa, singulum subsegmentis duobus completis sed inEequalibus efformatum, et pedum par unicum 

 gerens. Oculi nulli. Antennas 14 articulates. Pedes anales breves, styliformes. 



Segments numerous; each formed of two complete but unequal subsegments, and bearing a single pair of feet. 

 Eyes wanting. Antenna; 14 articulate. Anal feet short, styliform. 



* Linn. Trans., vol. xi. 



