Coleopterological Notices, V. 491 



Species of the Atlantic Regions. 

 Dark brownish-rufous in color ; fovese of the head extremely minute, perfo- 

 rate, the subfrontal spicules very feeble (testaceus || Csy.) Illinor 



Black, sometimes with slightly paler elytra; much smaller species, the ver- 

 texal fovesB larger, more impressed, the spicules large and conspicuous. 

 Subfrontal spicules midway between the tubercles and vertexal fovese. 



spiculifer 

 Subfrontal spicules very near the fovese, distant from the tubercles. 



Terticalis 



Species of the Rocky Mountains. 

 Body small, brown, coarsely, not densely pubescent, impunctate ; eyes rudi- 

 mentary. Length 1.4 mm IKlicrophtliallllUS 



Species of the Pacific Coast. 

 Antennae normal, the club composed of three larger joints, the ninth abruptly 

 much wider than the eighth ; anterior trochanters generally not sexually 

 modified. 

 Pubescence dual, composed of very long erect hairs with others much shorter 



and more decumbent pilberulUS 



Pubescence simple or nearly so, shorter and much less conspicuous. 



Elytra larger, the humeri broadly exposed at base, rounded (bipuncticeps 



Csy.) cognatiis 



Elytra smaller, more oblique at the sides to the base, the humeral angles 



obsolete sououiae 



Antennse with a very stout club which is composed almost entirely of the last 

 two joints, the ninth but slightly wider than the eighth ; body very small, 

 narrow, blackish, with the elytra red clouded with black toward base ; 

 pubescence rather long; anterior trochanters strongly spiculate at base in 

 the male tenellllS 



In cognatus the sixth ventral of the male is feebly subimpressed, 

 the apex with a broad feeble cuspiform emargination ; in tenellus 

 the sixth ventral is scarcely impressed, the apex with a triangular 

 emargination ; in both, the male pygidlum is very small. 



T. spiculifer n. sp. — Minute, black, the elytra more rufous ; legs and 

 antennse pale ; integuments polished, subimpunctate ; pubescence sparse, long 

 and coarse. Head distinctly narrower than the prothorax and about as long ; 

 eyes situated at nearly their own length from the base ; vertexal fovese rather 

 large, distinct from above, the subfrontal spicules distinct, midway between 

 the fovese and the large, somewhat flattened antennal tubercles ; antennse 

 stout, fully one-half as long as the body, the club large, fully as long as the 

 seven preceding joints, one to three decreasing in thickness, the third obconi- 

 cal, as long as wide, three to eight equal in thickness, four to eight transverse, 

 ninth and tenth much wider, strongly transverse, eleventh large, almost as 

 long as the preceding four together ; maxillary palpi moderate in develop- 



