Horn.] 



OPHRYASTINI. 55 



Two species compose this genus. 



Intervals of elytra convex, alternately more elevated ; hu- 

 meri not prominent torpidus. 



Intervals convex, equal ; humeri obtuselj^ prominent cinereus. 



N". torpidus Lee. (Rylobius) Pacif. R.R. Rep. App. 1, p. 55. 



Elongate oval, surface densely covered with cinereous scales and with 

 veiy short sub-erect setse. Head and rostrum longer than the thorax, 

 sparsely punctured, densely pubescent, and with very few short sub-erect 

 scale-like hairs. Rostrum flat above, tip with small triangular smooth space, 

 a fine median line near the tip. Thorax slightly broader than long, sides 

 in front rather strongly arcuate, then gradually narrowed to base, disc 

 moderately convex with a rather broad median channel deeper in front, 

 surface sub-granular and very densely scaly and Avith few sub-erect scale- 

 like hairs. Elytra oblong oval, slightly wider at base than the thorax, 

 humeri rounded, disc moderately convex, feebly striate, strise with mode- 

 rate, rather closely placed, round punctures, each filled witli a large scale, 

 intervals convex, the sutural 2-4-6-8 more elevated, surface densely scaly, 

 each interval with one row of short scale-like sub-erect hairs. Body be 

 neath and legs very densely covered with scales similar to those of the 

 upper surface. Length .26-.38 inch ; 6.5-7 mm. 



Old specimens of this species are frequently brownish. One female in 

 the cabinet of Dr. LeConte has one of the short abdominal segments absent. 



Not rare in Oregon. 



N. sequalis, n. sp. 



Form oblong oval, surface densely covered with cinereous scales, and 

 with short erect setae. Head and rostrum slightly longer than the thorax, 

 densely scaly, sparsely setose. Rostrum slightly rounded above, at tip with 

 very small smooth space and without median line. Thorax slightly broader 

 than long, sides, moderately arcuate, disc feebly convex, median line feebly 

 impressed, surface granulato-rugulose, moderately densely scaly and sparsely 

 setose. Elytra oval slightly broader than the thorax, humeri obtusely 

 prominent, disc moderately convex, feebly striate, striae with distant punc- 

 tures, intervals slightly convex, with a single row of setae on each, surface 

 densely covered with cinereous scales. Body beneath and legs densely 

 scaly, sparsely setulose. Length .24-. 26 inch ; 6-6.5 mm. 



A specimen of this species was sent to Lacordaire, who pronounced it a 

 Phyxelis. This view I cannot accept as the scrobes are not superior as in 

 that genus and the front is not transversely impressed. It is one of those 

 forms (with the preceding species) which renders it extremely difficult at 

 times to divide large masses of species into groups higher than genera. 



Occurs from Kansas to British Columbia. 



CIMBOCERA n. g. 



Rostrum somewhat narrower and slightly longer than the head, parallel 

 and sub-cylindrical at base, slightly dilated in front, tip sinuate, at base 



