404 Prof. T. D. A. Cockerell on 



strongly and densely punctured^ a small space in the middle 

 near the anterior margin smooth and shining ; anterior 

 margin of clypeus transversely silicate ; process of labrum 

 with a deep angular omargination ; mesothorax dull, minutely 

 tcsscUatc, with very sparse and feeble punctures ; legs black, 

 small joints of tarsi slightly ferruginous, spurs white ; base of 

 metatiiorax dull, granuLir, not enclosed ; tegulaj dark ; wings 

 yeUou'ishy nervures brown, stigma deep honey-colour ; abdo- 

 men broad, microscopically tessellate, first four segments with 

 broad but very thin apical bands of dull white hair. 



Hah. Hill above Beulah, N. M., Aug. 19, 1899 (Wtlmatte 

 Porter). 



I thought at first this might be distinct from apacheorunij 

 but after careful comparison I must regard it as the same, 

 notwithstanding the difference in the process of the labrum, 

 which in the type of apacheorum is truncate, the truncation 

 depressed centrally, but scarcely emarginate. 



Andrena apacheorum, var. /8. 



$ . — Differs as follows : — Process of labrum with emargi- 

 nation rounded, not angular ; clypeus shini)ig, sparsely punc- 

 tured on the disk, with a median impunctate stripe; wings 

 quite dark, stigma somewhat darker. 



Uah. Hill above Beulah, Aug. 19 (Wtlmatte Porter). 



Another form of apacheorum, which appears to be re- 

 markably variable. This insect resembles A. solidaginis and 

 A. astens in many of its characters, but the abdominal bands 

 of soUdoginis are much narrower and asteris differs in various 

 small details. 



Andrena segregans^ sp. n. 



$ . — Length about 8 millim. 



]ilack, with white pubescence, dull on mesothorax and 

 scutellum, with a decided grey tint, some hJackhairs on vertex 

 and about the base of the antennce ; hair of tarsi greyish, 

 inclining to fuscous, of apex of abdomen stained with greyish 

 brown, but not actually sooty. Process of labrum broadly 

 truncate, the truncation concave, but only slightly so ; clypeus 

 with strong punctures, not very dense ; antennae dark ; vertex 

 granular; mesothorax dull, microscopically tessellate, with 

 sparse feeble punctures ; basal area of metathorax triangular, 

 minutely roughened, with a slight and delicate rim, obsolete 

 medially ; tegulae dark ; wings smoky ; stigma and nervures 

 very dark brown ; abdomen shining, practically impunctate, 

 narrower than in apacheorum, with thin white hair- bands on 



