154 MEMOIRS ox THE COLEOPTERA. 



Colpodota avia n. sp. Larger and stouter than usual and more parallel, 

 rather convex, somewhat alutaceous or slightly shining, piceous-black in 

 color, the elytra dark brown, the abdomen feebly paler at tip, the legs pale; 

 pubescence very short but close, the punctures fine, dense and asperate, 

 close but very fine on the abdomen; head large, rather transverse, much 

 dilated at base, the eyes at a little less than their own length from the base; 

 antennae rather long, notably heavy, black, piceo-rufous basally, the first three 

 joints about equally long, the first stoutest, the third not much thicker than 

 the second but regularly obconic, fourth to tenth gradually increasing and 

 from as long as wide to distinctly transverse, the last large, ogivally pointed 

 and longer than the two preceding; prothorax moderately transverse, much 

 rounded and as wide as the elytra at base, the sides strongly converging and 

 broadly arcuate from base to apex, the latter as wide as the head, the base 

 much wider, the median line very obsoletely impressed except apically; 

 elytra rather short, not quite parallel, not sinuate at the apices, the suture 

 just visibly longer than the prothorax; abdomen not quite as wide as the 

 elytra, the sides very feebly converging and nearly straight throughout, 

 not acute at tip, the fifth tergite nearly as long as the two preceding. Length 

 1.65-1.9 mm.; width 0.42-0.52 mm. Rhode Island (Boston Neck). 



Distinguishable by its moderately large size, feebly tapering ab- 

 clomen, heavy antennae and anteriorly converging, very moderately 

 arcuate sides of the prothorax. 



Colpodota puritana n. sp.- More fusiform, rather convex, dark rufo-piceous, 

 the head and abdomen black, the latter brightly testaceous at apex, the ely- 

 tra dark red-brown, blackish basally, the legs pale brown; lustre alutaceous, 

 the punctures dense and very strongly asperate, fine, sparser and feebler 

 on the abdomen; head large, slightly transverse, moderately dilated basally, 

 the eyes slightly prominent and at more than their own length from the base; 

 antennae rather long and heavy, gradually somewhat notably incrassate 

 distally as in the preceding, blackish, rufo-piceous basally, the first joint 

 longer than the second, the latter barely as long and not so thick as the apical 

 part of the notably obconic third, fourth to tenth from just visibly wider 

 than long to strongly transverse, the tenth shorter and more transverse 

 than the ninth and the preceding joints, the last large, pointed, longer than 

 the two preceding; prothorax large, very moderately transverse, subparallel, 

 with rather strongly and evenly arcuate sides, evidently wider than the head 

 and just visibly wider than any part of the elytra, strongly rounded at base, 

 the median line feebly impressed in basal half; elytra rather small, parallel, 

 the suture a little shorter than the prothorax; abdomen at base about as 

 wide as the elytra, gradually rather strongly tapering to the much narrower 

 apex, the fifth tergite nearly as long as the two preceding. Length 2.0 mm. ; 

 width 0.48 mm. Massachusetts, Blanchard. 



Readily separable from the preceding by its paler and more 

 acuminate abdominal apex, more parallel prothorax, smaller, shorter 

 elytra and stronger sculpture. 



