COLEOPTERA OP SOUTHERN CALIFORNIA. 249 



than wide, sides moderately, arcuately divergent and rounding into the 

 base; basal angles not evident, apical angles very obtuse, rounded; punctu- 

 ation moderately strong, closer than on the head, a little coarser but not 

 denser at the sides. Elytra more coarsely punctate. Legs entirely pale. 

 Length, 2.3-2.5 mm. 



Described from a small series taken at Pasadena, in 

 April, by Dr. Fenyes. 



In the male the tibiee are armed as usual, the fifth 

 ventral segment is truncate and just perceptibly sinuate 

 at tip, the elytra rounded as usual at the apex. In the 

 female the fifth ventral is evenly rounded at the tip, and 

 the elytra are separately, acuminately produced at the 

 apex. The prothorax is longer than wide, — a character 

 entirely unique among our species, — and the peculiar 

 elytral sexual characters mark this as the most interest- 

 ing species of the genus yet discovered. It should stand 

 at the end of the genus. 



The species of the genus are rather closely allied and 

 difficult to determine with the existing literature. It 

 seems not to have been noticed, or at least recorded, 

 that the males of all species have the tibise on all the 

 feet mucronate at tip. The mucros of the front and 

 hind tibise are long and acute, though moderately stout, 

 while that of the middle tibia is short and blunt. I 

 have not been able to detect any such armature in 

 the females. The males are often more slender than 

 the females, and in some species, at least, the antennse 

 in this sex are distinctly longer. 



63. Dasytes musculus, sp. nov. 



Moderately elongate and convex, feebly shining; black throughout except 

 the mandibles, which are more or less pale, and the tibicB and tarsi, which 

 are inclined to become picescent. Pubescence coarse, cinereous, rather 

 dense, short, closely recumbent, uniformly distributed. Head rather 

 finely, not closely punctate; frontal impressions nearly obsolete, eyes not 



