116 AMERICAN COLEOPTERA. 



Caflon City, Colorado. Three examples. 

 In concolor, as represented by a Vancouver specimen in my 

 collection, the color is nearly uniform throughout, the outer 

 joints of the antennas are but little longer than wide, elytra 

 slightly longer than wide, less finely and closely punctate and 

 more shining. 



SCAPHIDIID^:. 

 BiEOCERA Er. 



B. humeralis n. sp. 



Rather narrowly oval, blackish, elytra gradually rufescent at apex, 

 the humeri rufous; antennas pale, the outer joints dusky ; legs rufous ; 

 abdomen rufescent at extreme apex. Integuments highly polished, 

 elytra remotely obsoletely punctulate, elsewhere impunctate. Antennae 

 subequal in length to the head and prothorax, joints 3, 4 and 6 

 subequal and about three times as long as wide ; 5 slightly longer ; 

 7-11 gradually wider and pubescent, 9 more abruptly wider when 

 viewed on the compressed side; joints nearly symmetrical. Prothorax 

 about j wider than long, hind angles acute and a little deflexed. Scu- 

 tellum rather large, transverse. Elytra f longer than the prothorax 

 and about 7 \ longer than wide ; basal stria entire but very fine exteriorly ; 

 humeral spot reaching half way to the suture, not very sharply defined. 

 Mesepimera extending f to the coxa? ; metepisterna very narrow, punc- 

 tures along the hind margin of the middle and hind coxa? small. 

 Length, 1.7 mm. ; width, 1 mm. 



Tacoma, Wash, (type); Flagstaff, Arizona. This species 

 seems most closely allied to texana in size, well developed 

 scutellum, and entire basal stria of elytra. It differs dis- 

 tinctly in color, shorter mesepimera and finer post-coxal 



punctures. 



SCAPHISOMA Leach. 



S. dakotana n. sp. 



Moderately robust, polished, piceo-castaneous, the elytra gradually 

 varying from castaneous at base to rufous at apex ; head, legs and 

 under surface pale, the metasternum blackish. Antennae fully as long 

 as the head and prothorax ; joint 3 triangular, slightly longer than 

 wide ; 4 twice as long as 3 and rather less than three times as long as 

 wide ; 5 as long as 3 and 4 together, and more than three times as 

 long as wide ; 6 about one-third longer than 5, evidently dilated 

 internally and with erect pubescence. Prothorax one-half wider than 

 long, minutely sparsely lightly punctulate. Scutellum distinct. Elytra 

 about one-sixth wider than their sutural length, sutural stria strong, 

 basal stria extending to the middle on one side and nearly to the 



