BEMBIDIIN.E 163 



pale spot, remote from the margin, at apical fourth, the lateral mar- 

 gin pale from behind the middle nearly but scarcely to the suture; 

 head five-sixths as wide as the prothorax, with moderate eyes, the 

 inter-sulcal apex rather acute; antennae fusco-testaceous, clearer 

 basally, three-fourths as long as the elytra, the medial joints slightly 

 more than twice as long as wide; prothorax barely a fifth wider 

 than long; base much narrower than the truncate apex and barely 

 three-fourths the maximum width, the sides moderately reflexed, 

 strongly rounded anteriorly, gradually converging and less arcuate 

 posteriorly to the rather abruptly defined parallel or subdiverging 

 basal part, which is a fifth the total length; angles right; anterior 

 impression obsolete, the posterior a punctured entire sulcus, the sur- 

 face between which and the base is somewhat convex; foveae rather 

 small, deep, rounded, adjacent to the moderate carina; elytra scarcely 

 one-half longer than wide, subparallel, with arcuate sides and rather 

 rapidly rounded, broadly basally exposed humeri, two-thirds wider 

 than the prothorax, convex; striae not coarse, feebly impressed 

 suturad, obsolete in apical third inwardly to three-fifths externally; 

 punctures small but deep and distinct, very widely separated in 

 the series; foveae at fourth and four-sevenths. Length (cf) 3.2 mm.; 

 width 1.25 mm. California (Paraiso Hot Springs, Monterey Co.). 



remotum n. sp. 



On examining the careful description of the European Bemb. 

 assimile Gyll, given by Duval (Rev., 1851, p. 168), I find so decided 

 a discordance with ourfrontale Lee., now in our lists under the name 

 assimile, as to excite wonderment at the change of name ; the elytra 

 in assimile are of obscure bluish or greenish lustre, with the usual 

 posterior maculation; they are coarsely striate and coarsely punc- 

 tured, and the fact that they sometimes exhibit evidences of vague 

 anterior maculation, shows that there is an essential difference, but 

 the most important difference is in the dimensions of the body; 

 frontale is one of the most minute species of the genus, while the 

 length of assimile is 3.2-3.5 mm., indicating materially greater 

 size. The Pacific coast forms said to be frontale by Mr. Hayward, 

 are altogether different specifically, and that author included a very 

 confusing mixture of distinct species under his conception of angu- 

 liferum Lee., founded originally upon a unique taken near San 

 Francisco, to which region the species is unquestionably confined. 

 I have nothing approaching it very closely; it is of rather large size 

 for this subgenus 3.75 mm., if the published measurement of Le- 

 Conte is to be relied upon. 



The species described above under the name scenicum, is probably 

 allied rather closely to acutifrons Lee., described as from Alamosa, 



