48 ON THE CIIILOPODA OF NORTH AMERICA. 



S. h/EViPES, n. sp. — S. aurantiaea, robusta; capite modice magno, rare obsolete punelato, sparse piloso; 

 seguiento basilar! margine autico postieo nonnihil lutiorc; mandibulis magnis, singula intus denti- 

 culo magno acuto armata ; deDtc mandibular], gracile, longo; scutis latis, brevibus, suturis seuto-epis- 

 cutalibus nullis; pedibus modice longis. utrinque (>9, pari postremo (in mare?) longo, valde incrassato, 

 illico acuminato, artieulis obconicis, (in femina?) parvo, gracile, articulis subcylindricis; suturis stcrno- 

 episternalibus distinctis; squama preanali postice valde angustata. 



One of the specimens has the last pair of legs very thick and long and vertically 

 compressed. They are composed of eight joints, all of which are obconic except the 

 last, which is very short and rapidly acuminate. This individual we believe to be 

 the male. The other, the female, has the hindmost legs very slender, with the coxal 

 joint proportionally very much larger than in the male. 



Hab.— Georgia. Museum of Academy ; Dr. J. LeConte. 



S. TiENiOPSis, n. sp. — S. dilute fulva ; corpore valde depresso, modice lato, antiee leviter angustato; capite 

 magno; segmento cepbalico subtriangulare; antennis brevibus, moniliformibus, postice leviter depressis, 

 crassis, antiee eylindricis, baud acuminatis, pilis brevissimis mollibus paucis; labio breve, lato, antiee 

 obsolete bidentato, sulco mediano leviter impresso ; mandibulis crassis; scutis brevissimis, sine suturis 

 sed interdum linea mediana obscura; sternis brevissimis, singulo depressione submediana ovata, in cor- 

 pore antieo conspicuissinia ; pedibus brevibus, crassis, eylindricis, haud pilosis, utrinque 141, pari 

 postremo (in femina ?) gracile, breve, (in mare ?) 1 Long. une. 4|. 



In our specimen the color is very light, but originally may possibly have been an 

 orange. The body is almost destitute of polish. The epimeral plates are very large. 

 "We are indebted to Dr. J. L. Le Conte for the specimen, which he captured in the 

 mountains of Georgia. 



S. MACULATiceps, n. sp. — S. sordide aurantiaea, polita ; corpore robusto, subsemicylindrieo, antiee modice 

 attenuate; capite modice parvo, obscure saturate rubro, minute albomaculato, in lateribus sparse piloso; 

 antennis loDgis, leviter pubescentibus, haud acuminatis ; mandibulis crassis, obscure quadridentatis, 

 pilis paucis, dentieulo antieo utrioque magno, conico ; labio impunctato, antiee vix emarginato, medio 

 canaliculate ; pedibus modice longis, gracilibus, subcompressis, utrinque 77, et superfieie ventrali 

 sordide flavis; scutis laevibus sine suturis; sternis lsevibus, suturis sterno-episternalibus valde impressis 

 et plerumque postice depressionum irregulariter ovatorum transversarum pari; pedibus postremis 

 (" stylis analibus ") (in mare solum 'I) robustissimis, supra subcomplanatis, subtus convexis, acuminatis. 



The cephalic segment is slightly narrowed anteriorly, and the upper surface of the 

 whole head is marked with very small whitish dots. The anterior and posterior 

 extremities of the body are perhaps a little darker in color than the intervening 

 portion. The inferior aspect of the head is of the same color as the superior, contrast- 

 ing with the under surface of the body. Near the posterior border of each sterna 

 there is a pair of subequal oval transverse depressions. The legs are almost destitute 

 of hair, having occasionally, however, a few very short ones. 



Specimen belonging to the Smithsonian Institution. 

 294 | 1 | Upper Colorado. | Lieut. J. C. Ives, U. S. A. | H. B. Mollhausen. | Une. 2$ | 



