14 ON THE CIIILOPODA OF NORTH AMERICA. 



L. Americanus, Newp. — "L. ferrugineus, capite raagno ^ubquadrato margine postico elevato; subsegmento 

 antennali sparse profunde puDctato, antennis pubescentibus, ocellis nigris utrinque 25 — 26, labio com- 

 planato, polilo, margine fere recto: denticulis 10, parvis, nigris, subapproxicuatis, seutis dorsalibus 

 Ircvibus, convexis, subquadratis postiee rectis; segtnento procanali piloso, pedibus validis flavis spinis 

 validis armatis." 



L. Americanus, Newp., Linn. Trans, xix. p. 305; Catalogue of British Museum, (Myriapoda,) p. 17. 



L. Americanus, P. Gervais, Apteres, iv. p. 236; et Tabl. des Myriap. (Exp. Ameriquc du Sud,) p. 29. 



?L. spinipes, Say, Journ. A. N. S. 1st series, vol. ii. p. 108; et in (Euvr. Entom. Ed. M. A. Gory, 1, p. 21. 



?L. spinipes, Lucas, Hist. Nat. Anim. Art. iv. p. 543. 



In the Smithsonian individual that we refer to this species, the anterior scuta have 

 the posterior margin raised with the angles rounded; whilst in the posterior scuta the 

 lateral margins are alone thickened, and in the smaller scuta the angles are produced 

 and acute. The sterna and head are punctate. The preanal segment is not hairy. 

 A specimen from Massachusetts, belonging to the Museum of Comparative Zoology, 

 agrees with the former very well, with the exception that the posterior margin of the 

 posterior scuta is more curvilinear, thus differing more from Mr. Newport's descrip- 

 tion. 



Specimens belonging to the Smithsonian Institution. 

 341 | 1 | Between Pike Lake and Ft. Uuion. | Gov. 1. 1. Stevens. | Lt. Grocer, U. S. A. | Lin. 11. | 



L. paucidens, n. sp. — L. ferrugineus, pedibus flavis; segmento-cepbalico polito, postiee margine elevato; 

 antennis elongatis, pilosis, subsegmento impunctato; laminis dentalibus indistinctis, singula denticulis 

 duobus valde sejunctis armata; ocellorum paribus 17; seutis alternis majoribus politis, vix asperatis, 

 margine postico fere recto; seutis alternis minoribus margine postico recto et angulis externis pro- 

 duces; cox* excavationibus parvis, vix ovalis; segmento prteanali haud piloso. 



The color of the only adult specimen that we have seen approaches an orange. 

 The mandibles are rather large. The dental lamina are almost wanting, their margin 

 somewhat rounded and armed each with two acute widely separated teeth. The 

 color of the three or four posterior sterna is darker than that of the rest of the bod}'. 

 The excavations of the posterior coxas are small, few and nearly round. The feet are 

 yellowish, hairy, and with well developed articular spines. 



300 

 343 



Fort Tejon, Cal. 

 ?St. Louis, Mo. 



Specimens belonging to the Smithsonian Institution 



! Lin. 6—13. 



J. Xantus deVesey. 

 ?Dr. Geo. Engelmann 



12. 



Locality probably incorrect. 



L. planus, Newp. — " L. ferrugineo-variegatus, capite magno subquadrato polito postiee ad marginem elevato 

 inerassato, antennis brevibus pubescentibus ocellis utrinque 23, labio, polito, pilis raris; laminis den- 

 talibus lunatis angulis externis antice elongatis profunde emarginatis; denticulis 14 acutis, nigris, 

 seutis dorsalibus complanatis rugosis marginis elevatis, pedibus nudis spinis articularibus parvis." 

 Species mibi ignota. 



L. planus, Newp., Linn. Trans, xix. p. 366; Catalogue of British Museum, (Myriapoda,) p. 18. 



L. planus, P. Gervais., Apt. iv. p. 236; et Tabl. des Myriap. (Exp. Amer. du Sud, part. Sept.) p. 29. 



