366 MEMOIRS ON THE COLEOPTERA 



very pale like the upper, with a black area near the sides of the meta- 

 sternum and on the met-episterna; tarsi and tibial tips blackish; 

 pubescence minute, not dense, giving a very feeble pruinose effect; 

 antennae longer and more slender than in the two preceding, being 

 nearly as long as the body (cf); prothorax as long as wide, cylindric, 

 with a feeble swelling at the middle of the sides, the callous spots not 

 large but all strong, the median line tumid, except near base and 

 almost apical half, the punctures coarse and rather close-set; elytra 

 with the punctures very coarse, close-set, serial, becoming confused 

 and smaller apically as usual, the apices truncate, with broadly 

 rounded external and minutely dentiform sutural angles; last dorsal 

 segment (cf ) longer than wide, feebly trapezoidal, with broadly 

 rounded apex, rather convex and with the subbasal ridges strong; 

 cavity of the fifth ventral deep but pubescent like the rest of the 

 surface. Length (cf ) 10.8-11.0 mm.; width 2.2-2.3 mm. Kansas. 



ferruginea n. sp. 



5 Elytra and entire upper surface uniformly pale ochreo-testaceous 

 throughout, the head a little darker testaceous; under surface, legs, 

 tarsi and antennae very pale, the sterna and subbasal parts of the 

 abdomen sometimes infumate, the scape also a little darker in shade. 

 Body very slender (cf), a little shorter (9), the antennae slender, 

 distinctly shorter than the body in both sexes; prothorax transverse, 

 a fourth to third wider than long, the sides feebly and medially 

 arcuate; surface with moderate punctures, only feebly shining, the 

 median line not tumid as it is in the preceding group, the two callous 

 spots strong but only darker testaceous in color (cf ) or black (9 ), 

 the middle of the base with a small point similarly varying in color; 

 elytra long and slender, sinuato-truncate and bidenticulate at apex, 

 having series of rather coarse separated punctures, not smaller but 

 confused apically, the cinereous vestiture short, sparse and not very 

 evident; pygidium (9 ) strongly tumid and convex discally toward 

 apex, the ridges of the last dorsal (cf) strong and subacute, the fifth 

 ventral with a moderate subtriangular impression, which is evident 

 also in the female though much smaller and feebler. Length (cf 9 ) 

 9.0-11.0 mm.; width 1.65-1.9 mm. Maine (Monmouth and Wales), 



C. A. Frost pallida n. sp. 



Elytra pale, with dark marginal and sutural vittae 6 



Elytra deep black throughout, less uniformly so only in exilis 7 



6 Form slender, rather elongate, parallel, flattened above, pale flavo- 

 testaceous, the head normally pale, sometimes with feeble and 

 limited blackish marking, the prothorax with three black spots, one 

 at the middle of the base; scutellum and a lateral and sutural vitta 

 the latter not attaining the scutellum on each elytron blackish, 

 the margin pale near the humeri; legs and coxae pale throughout in 

 both sexes; under surface black, the abdomen (cf 1 ) with the last 

 two segments abruptly pale, except a large discal area of the fifth, 

 also nubilously pale at base, or ( 9 ) wholly black, except at the sides 

 of the fourth and often the third segment; pubescence ashy but not 

 dense above, the erect hairs short and pale, closer but not very dense 

 beneath; antennae slender, about as long as the body, pale, the first 



