H. C. FALL. 127 



P. fissiceps n. sp. 



Form narrow, cylindrical, moderately shining, black, prothorax and 

 basal third of elytra, antennae and legs reddish-brown ; beneath 

 blackish. Antennas shorter than the head, basal joint longer, joints 

 2-8 short, gradually wider externally, club subequal in length to the 

 preceding six joints, and twice as wide as the 8th ; 8th joint trans- 

 versely oval. Head elongate, parallel behind the eyes, the latter small, 

 not prominent, about as distant from the prothorax as from the front 

 of the epistoma. Epistoma deeply triangularly emarginate and im- 

 pressed, front with a longitudinal impressed line ; surface alutaceous, 

 and rather strongly not closely punctate, the punctures elongate. Pro- 

 thorax subequal in length to and not wider than the head, obviously 

 narrowed posteriorly, apex squarely truncate, base broadly arcuate, 

 side margin fine, disk evenly convex, punctuation slightly finer than 

 on the head. Elytra very slightly wider than the prothorax, fully 2i 

 times as long as wide and about j longer than the head and prothorax 

 together; punctuation rather sparse, irregular, with traces of serial 

 arrangement near the suture ; disk without trace of striae, a short 

 rather deep linear impression on the declivity. Head and presternum 

 beneath coarsely sparsely punctate ; metasternum and abdomen finely 

 sparsely punctate. Length, 4.4-5.7 mm. ; width, .95-1.2 mm. 



I owe my specimens of this interesting species to Dr. E. 

 C. Van Dyke, who took them flying on warm days in March 

 about corded Douglas spruce logs at Forest Hill, Placer 

 County, California. 



NEMOSOMA Lat. 

 N. cavieeps n. sp. 



Similar in form and size to cylindricum, piceous, antennae 

 and legs rufous, extreme base of elytra obscurely rufescent 

 near the humeri. Head broadly but distinctly transversely 

 impressed posteriorly, front broadly concave. Elytra very 

 finely punctate striate basally, the punctures becoming almost 

 completely obsolete apically ; abdomen nearly smooth, the 

 punctures very fine and remote. 



Huachuca Mountains, Arizona — 9000 feet (type); Las 

 Vegas Hot Springs, New Mexico (Barber and Schwarz). 



In cylindricum the front is flat or very nearly so, the head 

 scarcely impressed behind, the elytral striae distinct to apex, 

 the abdomen more closely and distinctly though finely punc- 

 tate, the elytra usually with basal and apical rufous areas. 



TRANS. AM. ENT. SOC, XXXVI. JUNE, 1910. 



