THE MYRIAPODA OF NORTH AMERICA. 



151 



L. PAUCIDENS. 



L. ferruginous; pcdibus flavis ; segmento-oephalico polito, postice margins clevato ; antennis elongatis, pilo- 

 sis : laminis dentalibus indistinctis, singula denticulis duobus vakle sejunctis armata; ooellorum paribus 17; scutis 

 alternis majoribus politis, vix asperatis, margino postioo fere recto ; scutis alternis minoribus margine postico 

 recto et angulis extcrnis productis ; coxarum excavationibus parvis, vix ovatis. 



Ferruginous; feet yellow; cepbalic segment polished, with its posterior margin elevated ; antenna elongate, 

 pilose; dental lamina indistinct, each armed with two widely separated dcnticules ; pairs of ocelli 17 ; alternate 

 larger scuta polished, scarcely roughened, with their posterior margins almost straight; alternate minor scuta, with 

 their posterior margins straight and their external angles produced ; excavations on the coxa small, scarcely oval. 



L. pauoidens, Wood, Journ. Acad. Nat. Sci., new series, vol. v, 1863, p. 14. 



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

 mandibles are rather large. The dental lamina are almost wanting, their margins some- 

 what rounded and armed with two acute widely separated teeth. The color of the 

 three or four posterior sterna is darker than that of the rest of the body. The excavations 

 of the posterior coxtc are small, few, and nearly round. The feet are yellowish, hairy, and 

 with well-developed articular spines. Length 1 inch. 



Bab. Fort Tcjon, Cal. — J. Xantus de Voscy. — Smithsonian Collection. 



L. planus. , 



" L. ferrugineo-variegatus ; capite magno subquadrato polito postice ad ruargincm clevato incrassato; antennis 

 brevibus pubescentibus; ocellis utrinque 23;labio polito, pilis raris ; laminis dentalibus lunatis angulis externis 

 anticc elongatis profundc emarginatis; denticulis 14 acutis, nigris; scutis dorsalibus complanatis rugosis mar- 

 ginis elevatis ; pedibus nudis spinis articularibus parvis." Species mihi ignota. 



Variegated with ferruginous ; head large, subquadrate, polished, elevated, and thickened at its posterior margin ; 

 antennae short, pubescent; ocelli on each side 23; labium polished, with scattered hairs; dental lamina lunate, 

 anterior external angles elongate, profoundly emarginate ; dcnticules 14 acute, black ; dorsal scuta complanate 

 rugose their margins elevated; feet bare, with small articular spines. Species unknown to me. 



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

 " " P. Gervais, Apt. iv, p. 236 ; ct Tabl. des Myriap. (Exp. Amcr. du Sud, part. Sept.), p. 29. 

 " << Wood, Journ. Aead. Nat. Sci., new series, 1863, p. 14. 



This species may belong in the genus Bothropolys, but, as I have never recognized it, I 

 cannot say. 



