Coleopferological Notices, V. 331 



although the posterior tarsi are decidedly shorter with the four basal 

 joints differing much less in length. 



A. insignis Csy. — Bull. Cal. Acad. Sci., I, p. 310 (Oxypoda). 



This species is allied rather closely to wickhami, but differs con- 

 spicuously in the wider and deeper impressions of the abdomen, the 

 impression of the second tergite, for instance, occupying more than 

 basal third, while in wickhami it is very narrow and feeble along 

 the basal margin ; in insignis the prothorax is relatively smaller 

 and shorter and more strongly punctate, the elytra longer, and the 

 antennae rather shorter and less incrassate. 



A. Trickliaiui n. sp. — Compact, parallel, somewhat stout, feebly convex, 

 minutely reticulate but strongly shining, the abdomen polished ; dark piceous- 

 brown, the head and abdomen throughout black ; legs pale, yellowish ; antennae 

 black, testaceous toward base ; head and pronotum finely, very feebly and 

 remotely punctulate ; elytra finely but more distinctly, subasperately and 

 rather closely so ; abdomen finely, feebly and remotely punctulate through- 

 out ; pubescence rather long, decumbent and sparse. Head nearly circular, 

 fully three-fourths as wide as the pronotum, strongly convex, feebly, coales- 

 cently biimpressed just behind the line of the antennae, and also with a small 

 impression at the center of the vertex between the eyes, the latter moderate, 

 at more than their length from the base ; antennae attaining the middle of the 

 elytra, moderately incrassate, the basal joint thicker and much longer than 

 the second, the latter as long but not quite as thick as the third, both elongate, 

 fourth a little longer than wide, tenth scarcely visibly wider than long, eleventh 

 ogival, pointed, as long as the two preceding. Prothorax subquadrate, nearly 

 one-half wider than long; sides parallel, feebly arcuate, becoming straight 

 in basal half, distinctly convergent and broadly rounded toward apex ; base 

 broadly arcuate, distinctly wider than the truncate apex ; basal angles obtuse 

 and blunt ; disk scarcely impressed. Elytra one-half wider than long, slightly 

 longer than the prothorax, and, at apex, nearly one-fourth wider ; sides dis- 

 tinctly divergent and nearly straight from the humeri, which are broadly 

 rounded and oblique but not much exposed at base ; disk broadly impressed 

 on the suture throughout. Abdomen a little longer than the anterior parts, 

 fully as wide as the elytra, the sides parallel and nearly straight ; first three 

 segments distinctly, subequally but rather narrowly impressed transversely at 

 base ; fourth and fifth equal in length. Legs moderate ; first joint of the ante- 

 rior tarsi much shorter than the second. Length 3.7 mm. ; width 0.95 mm. 



British Columbia (Stickeen River Canon). Mr. H. F. Wickham. 



In this species the elytra are much more developed than in quad- 

 ricollis ; it also has a more distinctly athetoid appearance. The 

 mesosternal process is acute, prolonged to the middle of the coxse 

 and free at apex; the metasternum is not produced at all between 



