472 Pomona College Journal of Entomology 



CC. Seventh segment with spiracles (eleven pairs of spiracles present). 



Genus Scolopocryptops Newport. 



BB. Anal legs without a claw and the tarsi transformed into a many jointed, 



antenna-like lash; prefeniur of anal legs with rows of from three to 



six spines on ventral surface ; femur of prehensorial feet without 



basal tooth. Genus Nervportia Gervais. 



Genus Theatops Newport 



Of this genus, one species {T. erythrocephalus) occurs in southern Europe 

 and three in North America, of which the one found in California is very close 

 to the European form and is accordingly listed below as a subspecies to it. 



The members of this genus are of medium size (35-46 mm.), have twenty- 

 one pairs of legs, and but nine pairs of circular or subcircular spiracles, not 

 being present on the seventh segment. The antenna consist uniformly of sev- 

 enteen articles. The anal legs are short and thick, with the claw strongly en- 

 larged. 



Theatops erythrocephalus subspecies californiensis Chamberlin 



This is the only form of Theatops thus far known to occur on the Pacific 

 coast. 



From 40 to 46 mm. in length. Brown in color, with antennae and legs yel- 

 lowish. Teeth of presternum 3-3. large. Tooth on femur of prehensorial feet 

 rather large and stout. Tibia;, except of last two pairs, armed with a spine 

 both above and beneath. Anal legs stout, short, the claw about as long as the 

 two tarsal joints together. Prefemur and femur both armed beneath toward 

 mesal side with a single moderate tooth. Pseudopleura with process ending in 

 a stout spine or tooth. 



The only record from the state is Quincy, Cal., the type locality. Probably 

 the same form as that reported by Kracpelin from Oregon. 



Genus Otocryptops Haase 



This genus, of which some five species are now known, is represented in the 

 faunas of both hemispheres. Two species occur in California. 



The members of this genus when fully grown reach a length of mostly from 

 50 to 60 mm. They have twenty-three pairs of legs and ten pairs of oval spira- 

 cles. As in the preceding genus, the antennae are composed constantly of sev- 

 enteen articles. Anal legs not shortened, and the claw of moderate size. 



The California species may bo identified by means of the following key, in 

 which a new species from Idaho is also taken up: 



Key to Species of Otocryptops 

 A. Ventral plates nearly all with a distinct median furrow; dorsal scuta 

 mostly with a median furrow. 



B. Inner spine of prefemur rudimentary to entirely aborted ; lateral angles 

 of the last dorsal plate ending in a small spinous point; last ventral 

 plate witii e.uidnl margin truncate or but weakly incurved. 



0. gracilis Wood. 



