AMERICAN COLEOPTERA. 241 



slightly emarginate in frout, rounded on the sides and at the base. Elytra twice 

 as long as the prothorax, sutural angle strongly rounded, apical margin fringed 

 with long hairs. Legs piceous. Length .05 mm; .02 inch. 



Detroit, Michigan, one specimen; Messrs. Hubbard and Schwarz. 



6. T. maoroptcriis, n. sp. — Less elongate, depressed, blaekish-piceous, 

 ojiake, finely pubescent. Head rounded, very little narrower than the pro- 

 thorax. Antennae entirely piceous, stout, longer than the head and prothorax, 

 outer joints transverse. Prothorax twice as wide as long, slightly emarginate 

 in front, rounded at the sides and base. Elytra frequently reddish-brown, 

 pubescence very short and depressed; nearly three times as long as the pro- 

 thorax, sutural angle strongly rounded. Abdomen densely punctulate. Legs 

 piceous. Length .06 ram; .025 inch. 



California, at various localities. The pubescence is scale like and 

 tinfi;ed with golden upon the prothorax and elytra. 



ANCYROPIIORI S Kraatz. 

 This genus is easily distinguished from Trognpkloeus, by the fourth 

 joint of the maxillary palpi being longer, and gradually tapering from 

 base to tip, which is rounded ; thus though acicular. it is much larger 

 and more distinct than in TrogophlaMn ; the front coxal cavities are 

 widely angulated externally, and a large trochantin is visible; the 

 prosternal sutures are short, fine, but distinct ; the side margin of the 

 prothorax is distinct, and not deflexed to the under surface near the 

 front angles. The scutellum is variable in the three species in our 

 fauna; large in A. planus, smaller in biinipreasuH, and not visible in 

 annectens. This last species makes therefore an excellent passage (in 

 this respect, but in no other), to Troijoplilixus. 



Elytra strongly punctured, color brown 2. 



Elytra, head and prothorax very finely and densely punctured, color black, 



scutellum large. 1. planiiN, n. sp. 



2. — Prothorax sparsely ami very finely punctured, with an obliipie impression 



each side near the base; scutellum small 2. biiinprcMSll^*. 



Prothorax sparsely aud coarsely punctured, with two vague obliijue im- 

 pressions each side of the dorsal line; scutellum invisible. 



3. auuectens, n. sp. 



1. .4. plniins, n. sp. — Black, very depressed, finely pubescent, head, pro- 

 thorax and elytra finely and densely punctulate. Prothorax wider than long, 

 much rounded on the sides in front, then slightly narrowed, hind angles small, 

 nearly rectangular, base broadly margined ; dorsal line narrow, feebly elevated, 

 prolonged behind so as to interrupt a curved vagae impression which follows 

 the outline of the base. Scutellum large, flat, triangular, rounded behind. 

 Elytra more than twice as long as the prothorax, aud nearly one-fourth wider. 

 Alidomen very finely punctulate above, densely and more distinctly beneath. 

 Tibiae at tips, tarsi aud palpi piceo-testaceous. Length 2.7 mm; .11 inch. 



