AMERICAN rOLEOPTERA. 171 



SO as to become difficult of detection ; and by the ninth joint of the 

 antennae closely united with the tenth forming an obtuse compressed 

 club; the eleventh is connate with the tenth, and not distinct. 



H. puuotata. — Piceous shining, oval convex, not densely punctured, 

 mouth antennae and feet paler. Prothorax twice as wide as long, gradually 

 narrowed from the base forwards, slightly rounded on the sides, which are 

 finely margined. Elytra more deeply punctured, punctures hot arranged in 

 rows. Tibiae slightly dilated, as in Dacne. Length 2.4 mm. ; .09 inch. 



Middle, Western and Southern States. Less elongate than Dacne^ 



'and more nearly resembling in outline a small Tritoma, {Ci/rtotriplax 



Crotch). The prothorax is scarcely perceptibly margined at base, 



which is broadly sinuate; the under surface is very sparsely punctu- 



late. The eyes are coarsely granulated. 



Triphylltis elongatus — Elongate, dark piceous, punctured and pubes- 

 cent. Head with the front concave, and a small occipital im[)ression. Pro- 

 thorax wider than long, sides rounded, strongly margined, subcrenulate, disc 

 ■with two vague impressions, sometimes scarcely af)parent ; tip truncate, front 

 angles rounded, hind angles rectangular. Elytra about four times as long as 

 the prothorax, more strongly punctured, pale brown, usually darker towards 

 the sides. Beneath densely punctured, mouth, antennae and legs piceous. 

 Length 4 mm.j .16 inch. 

 Alaska to California. 



Cyphoii robustus. — Brown, clothed with short suberect pubescence. 

 Prothorax twice as wide as the head, nearly three times wider than long, sides 

 and apex rounded into a semielliptical curve, base bisinuate, sides somewhat 

 reflexed, disc finely not densely punctulate. Elytra rather strongly punctured, 

 with an obsolete sutural stria and three very indistinct dorsal costse. Antennae 

 half as long as the body; second and third joints equal, united as long as the 

 fourth. Length 5 mm. ; .20 inch. 



New York; one specimen kindly given me by Mr. Ulke. Larger 

 and more robust than the other species in our fauna, resembling in 

 form Helodes {Microcara) explariata, from which, however, it differs 

 in other characters, both generic and specific. In view of the faintly 

 marked elytral costse, 1 do not feel justified in considering this species 

 as Elodes obscura Guerin, which remains unknown to American 

 entomologists. 



CyphoH murinus Dej., which was not seen by Guerin, as hr as 

 I can judge by a MS. drawing by my father, is Dicranopselaphus 

 nervosus. 



Encinetns strigosns. — Elongate oval, rather pointed before and behind, 

 convex, shining black, very finely and scarcely perceptibly pubescent. Elytra 

 with well marked distant transverse undulated lines; sutural stria deep, the 

 others faint, eflfaced towards the base. Beneath finely and densely punctulate 

 and pubescent, antennae and legs brown. Length 3 mm.; .1-2 inch. 



