NORTH AMERICAN COLEOPTERA. 21 



D. striatus Lee. — Form moderati'ly elongate, gradually narrower posteriorly, 

 black, subopaque, sparsely clothed with sliort yellowish gray pubescence, some- 

 times more conspicuous on the thorax and base of elytra ; antennae not passing 

 the hind angles of the thorax, slender, second joint longer than the fourth, third 

 equal to the next two, joints four to ten gradually longer, eleventh one and a half 

 times the length of the tenth ; head coarsely and rather roughly punctured, the 

 interocular carina not reaching the clype\is ; the latter at base half as wide as at 

 apex, nearly as wide as to the eyes ; thorax distinctly longer than wide, sides par- 

 allel, or very slightly arcuate, in front arcuately narrowing to the apex, disc mod- 

 erately convex, a distinct depression at the middle of the base, in which the 

 median line is very deeply impressed one-third toward the apex, surface densely 

 punctured, more roughly toward the sides ; elytra deeply striate, the intervals 

 slightly convex, rather coarsely and roughly punctured ; prosternum moderately 

 not densely punctured ; the propleural triangle twice as wide as long at base, the 

 antennal groove deep, narrow, sharply limited ; mesopleurse sparsely punctate ; 

 metasternum very coarsely sparsely punctate ; abdomen with a coarse not dense 

 punctuation, the pubescence very sparse ; legs piceous, the tibise and tarsi some- 

 what paler. Length .2'2 - .34 inch ; 5.5 - 8.5 mm. 



Tliis species is rather more robust, the sculpture more rugose than 

 either of the next two species and differs also in the elytra much 

 more deeply striate. 



It seems to be the analogue in the Atlantic region of californicMs 

 in the Pacific as cyllndricollis is of niteni< and Harringtoni of basalis. 



Occurs from New York to Florida, but is more essentially a 



Southern species. 



D. Harringtoni n. sp. — Form elongate, moderately convex, slightly nar- 

 rower posteriorly, black, shining, sparsely clothed with cinereous yellow pubes- 

 cence, more conspicuous on the thorax and base of elytra ; antennge slender, 

 passing slightly the hind angles of the thorax, feebly subserrate, second joint as 

 long as the fourth, third not quite as long as the next two, joints four to ten 

 longer than wide and gradually more elongate, eleventh one-half longer than 

 the tenth ; head convex, densely punctured, a distinct transverse frontal impres- 

 sion, interocular carina broadly interrupted at middle ; clypeus as wide at base 

 as half the apex and wider than half the distance to the eyes ; thorax longer 

 than wide, sides posteriorly straight, but slightly convergent, anteriorly slightly 

 arcuate, disc moderately convex, a slight triangular depression posteriorly, the 

 median line finely impressed one-third to the front, surface not coarsely nor 

 densely punctured at middle, more densely at the sides, but not rugose ; elytra 

 substriate, the punctuation a little coarser and closer than on the middle of the 

 thorax ; prosternum rather closely finely punctate, the triangle more coarsely, 

 its outer side not twice as long as base, the antennal groove deep, narrow and 

 sharply limited ; mesopleurse coarsely sparsely punctate ; metasternum coarsely 

 punctured, the punctuation somewhat longitudinally strigose ; abdomen densely 

 rather finely punctate, the pubescence rather dense; legs i)iceous. Length .22- 

 .24 inch ; 5.5 - 6 mm. 



The elytral sculpture is about intermediate between cyHinlricoUh 



and driatus, otherwise the sculpture of the surface resembles the for- 



