1 66 MEMOIRS ON THE COLEOPTERA 



very gradually and moderately incrassate, the second joint a little longer 

 than the first or third, fourth nearly as long as wide, the tenth fully one- 

 half wider than long, the last as long as the two preceding; prothorax 

 three-fifths wider than long, the sides broadly rounded, more converging 

 and gradually less rounded anteriorly, widest behind the middle, the 

 base rounded, with the angles very obtuse, unimpressed; elytra well 

 developed, rather transverse, with feebly diverging sides, at base barely 

 as wide as the prothorax, the suture nearly a third longer; abdomen 

 distinctly narrower than the elytra, parallel and somewhat broad basally, 

 narrowing rather strongly behind, the fifth tergite parallel and sub- 

 tubulate, three-fourths as wide as the first and fully one-half longer than 

 the fourth, the first much the shortest, very strongly impressed trans- 

 versely, the others not impressed. Length 1.73 mm.; width 0.48 mm. 

 California (Catalina Island), Fall. 



Because of its stout form and certain general resemblances, this 

 species might be placed inadvertently with Acrotona and allies; 

 it is however not really related closely to that series but to Strigota 

 and Gnypeta. 



Gnypeta Thorns. 



Much restricted in the European fauna, this genus becomes a 

 very large one in subarctic North America and is not very homo- 

 geneous, which will necessitate, at some time, a division into several 

 groups of at least subgeneric value. The following species are to 

 be added to those previously described : 



Gnypeta wickhami n. sp. Stout, rather convex, shining, black, the 

 elytra feebly picescent, the legs pale; punctures very minute, sparse, 

 more distinct toward the sides of the head and a little larger on the 

 abdomen, the three basal impressions of the latter smooth ; pubescence not 

 very short, rather long and stiff on the abdomen, dusky; head fully as 

 long as wide, as wide as the prothorax, the eyes moderately prominent, 

 at but little more than their own length from the base, the tempora 

 broadly and gradually rounding to the base, somewhat less prominent, 

 becoming subparallel at the eyes; antennae long, slender, blackish, 

 picescent basally, becoming rather rapidly and notably heavy distally, 

 the second joint much longer but thinner than the first, only a little 

 longer than the third, fourth one-half longer than wide, the fifth nearly 

 as long, ninth as long as wide, tenth about a fourth wider than long, the 

 last as long as the two preceding; prothorax relatively small, scarcely 

 wider than long, the sides subangularly prominent but little before the 

 middle, thence converging and nearly straight to the base, the median 

 line faintly impressed, the transverse ante-scutellar impression large 

 and deep; elytra broad, transverse, with broadly exposed humeri, three- 

 fourths wider, the suture two-fifths longer, than the prothorax; abdomen 

 broad, parallel, with slightly arcuate sides, at the middle nearly as wide 

 as the elytra. Length 2.8 mm.; width 0.73 mm. Arizona (Final Mts.), 

 Wickham. 



