Horn] OPHRYASTLNT. 35 



sparsely punctured. Thorax slightly wider than long, narrower in front, 

 sides feebly arcuate from apex to base, behind the apex a transverse im- 

 pression moderately coarsely punctured, at sides near middle a feeble im- 

 pression, median line finely impressed ; disc very sparsely and compara- 

 tively finely punctured, at sides slightly rugulose and more coarsely punc 

 turcd. Elytra oblong oval, three times as long as the thorax, one and 

 a-half times as long as wide, stria? broad and shallow, punctures coarse and 

 serrate, intervals feebly convex. Body beneath and legs densely covered 

 with whitish scales. Length .88 inch ; 22 mm. 



Posterior cotyloid cavities strongly cavernous, tip of tibiae truncate with 

 broad oval scaly space. This species is the largest of the genus. 



One specimen found dead at Carisa Creek on the borders of the Colorado 

 Desert of California. 



E. varius Lee. (Ophryastes) Proc. Acad. vi, p. 444. 



Form oblong. Rostrum transversely impressed at base, median sulcus 

 feeble, lateral sulci deep but short and arcuate, surface sparsely punctured 

 covered with silvery white scales. Thorax cylindrical, sides moderately 

 arcuate, apex and base truncate, median line finely impressed, disc coarselj- 

 and rather closely punctured, surface covered with silvery white scales 

 with a median and lateral plumbeous stripe. Elytra oboval, broadest be 

 hind the middle, finely striate and with coarse punctures not closely placed, 

 surface with silvery white scales irregularly marmorate with plumbeous 

 spots sometimes forming two vitta3.. Body beneath and legs silvery white. 

 Length .30-.44 inch ; 7.5-11 mm. 



The cotyloid cavities of the hind tibiae are moderately cavernous, the 

 space at the tip very narrowly oval and scaly. This species in form and 

 color resembles decipiens, but may be known by the form of the rostrum. 



Occurs in the desert regions of California and Arizona. 



E. geminatus, n. sp. 



Form oblong oval, moderately robust. Rostrum transversely impressed 

 at base, above trisulcate, median sulcus finely impressed, lateral sulci short 

 but deep, surface sparsely punctured, covered with whitish scales, a plum- 

 beous space in front of each eye. Thorax broadly oval, wider than long, 

 widest at base, sides strongly arcuate, median line rather deeply impressed, 

 disc coarsely punctured, surface densely clothed with whitish scales with a" 

 broad plumbeous stripe on each side. Elytra regularly oval, three times 

 as long as thorax and a third longer than wide, finely striate, striae obsoletely 

 punctured, intervals flat, unequal ; surface densely covered with white 

 scales, striae narrowly black, narrow intervals slightly darker in color than 

 the others. Body beneath and legs white. Length .30-. 50 inch ; 7.5- 

 12.5 mm. 



The posterior cotyloid cavities are strongly cavernous and the tip of the 

 tibiae narrowly oval, the space scaly. A very distinct and striking species. 



Not rare in Owen's Valley, California. 



E. plumbeus, n. sp. 



Ovafmoderately robust, surface densely covered with cinereous or plum- 



