1903.] NATURAL SCIENCES OF PHILADELPHIA. 155 



legs with 3 claws, spines 1, 3, 3, 2; anal legs with the claw single, some- 

 times with a short spine on the outer ventral surface of base of claw, 

 spines 1, 3, 2. 1: last 2 pairs of coxae armed beneath and laterally. 

 Coxal pores numerous, in 3-4 series, of varying sizes. Gonopods of 

 ? : claws short and stout, tripartite, the lobes short and blunt or 

 rounded, the lateral ones sometimes scarcely indicated; basal spines 

 3-3, moderate, conical. 



Length of body 20-24 mm.; width of 8th dorsal plate 2.4( 9 )-3.9 

 mm. (c^); length of antennae 10-12 mm. ( ?), 11-16 mm (d^); length 

 of anal legs 10-12 mm. 



Habitat. — Truckee and Shasta Springs, Cal., and Oregon City and 

 Portland, Oreg. 



Etymology. — Sieira from Sierra Nevada Mountains, the home of the 

 species, and Latin vogvs, participle of vagari, to roam or wander over. 



3. Lithobius angelus sp. nov. 



Description. — Reddish-brown, legs paler, antennae light distally; 

 dorsal plates some^^•hat coarsely punctate, the posterior ones more 

 strongly so ; dorsum glabrous ; venter mostly nearly glabrous, but the 

 posterior plates and the genital and anal segments with more numer- 

 ous hairs; legs sparsely pilose, antennae densely pilose. Head wider 

 than long (7.5 :7) (& ) , or subequal in length and width ( 9 ) . Antennae : 

 articles 26(cJ')-28 (9), articles short, the ultimate about equal in 

 length to the two preceding together. Ocelli on each side: 12 in 3 

 longitudinal series (1-1-3. 4, 4). Prosternal teeth 2-2, acute. Spines 

 of the first legs 1, 3, 1-1, 3, 2; penult legs with 2 claws, spines 1, 3, 3. 1 ; 

 anal legs with 2 claws, spines 1, 3, 2, 1. Posterior coxae armed neither 

 beneath nor laterally. Coxal pores 5, 5, 5 (C), 5, round or suboval. 

 Oonopods of 9 : claw tripartite; basal spines 2-2, rather stout. 



Length of body 14 mm. (o^)-15 mm. (9); width of 8th dorsal 

 plate 1.9 mm.(cr')-1.7 (9) ; length of antennae 4.5 mm.( 9 )-5 

 mm. (d^). 



Habitat. — Los Angeles county, Cal. 



Etymology. — Latin angelus, an angel, the reference being to the 

 locality where found, Los Angeles, "place of angels." 



4. Lithobius bellulus sp. nov. 



Description. — Body shining testaceous-brown of a reddish tint, 

 head with lower portion of antennae and the posterior dorsal plates 

 darker; legs paler, with a violaceous tinge, legs and antennae lighter 

 colored distally; head and anterior dorsal plates weakly finely rough- 

 ened, the posterior dorsal plates more strongly so: head and dorsal 



