BEMBIDIIN^: 33 



throughout and entire, deeply impressed internally, less so externally, 

 the foveae rather irregular, at two-fifths and four-fifths. Length 

 (cf) 3-9 mm.; width 1.7 mm. Xew York (Catskill Mts.), H. H. 



Smith. A single example rusticum n. sp. 



Seventh stria obsolete or barely traceable 36 



36 Head well developed, but little narrower than an elytron. Body 

 moderately convex or ventricose, shining, with barely alutaceous 

 head, black, with feeble green lustre anteriorly, the elytra and epi- 

 pleura castaneous; tinder surface black; head four-fifths as wide as 

 the prothorax, the sulci rather shallow, the ocular puncture moder- 

 ate; antennae long, slender, piceous-brown throughout, nearly four- 

 fifths as long as the elytra, the medial joints fully three times as 

 long as wide; prothorax only two-fifths wider than long, the evenly 

 arcuate and well reflexed sides becoming straight and parallel in 

 basal fifth, the angles right and very sharp, the apical obtuse and 

 blunt; stria moderate, not quite entire; foveae large, rugose, rather 

 shallow, linearly deep at the bottom, the carina long and strong; 

 elytra just visibly inflated posteriorly, gradually strongly narrowed 

 in more than apical third, about one-half longer than wide and two- 

 thirds wider than the prothorax; striae fine, moderately impressed, 

 gradually feeble externally; foveae rather irregular, just before the 

 middle and near apical third. Length (9 ) 6-0-5.5 mm.; width 2.1 

 2.2 mm. California (Truckee). Three specimens, .adultum n. sp. 

 Head distincly less developed, always very much narrower than an ely- 

 tron .37 



37 Prothorax short and transverse. Body small, oblong-oval, moder- 

 ately shining, black and without metallic lustre anteriorly, the ely- 

 tra red-brown; under surface black, the epipleura pale brown; head 

 two-thirds as wide as the prothorax, with rather deep sulci; antennae 

 not quite as long as the elytra, fuscous, gradually paler basally, the 

 medial joints only about twice as long as wide; prothorax fully 

 three-fifths wider than long, widest and laterally rather more rounded 

 about the middle, the sides thence somewhat abruptly oblique and 

 broa'dly, strongly sinuate to the right and moderately sharp angles, 

 the anterior angles obtuse but rather sharp; surface with a fine stria 

 between the feeble transverse impressions, moderately reflexed at 

 the sides, the foveae large, shallow and rugose, broadly, sublinearly 

 deeper at lateral fourth, the carina distinct; elytra feebly inflated 

 posteriorly, broadly parabolic in nearly apical two-fifths, two-fifths 

 longer than wide and about one-half wider than the prothorax, the 

 fine striae moderately impressed, feeble externally, the foveae irreg- 

 ular, just before the middle and behind apical third. Length (9) 



3.5 mm.; width 1.5 mm. California (Truckee) dilutum n. sp. 



Prothorax much less abbreviated; size larger 38 



38 Body oblong-suboval, only feebly ventricose, moderately convex 

 and shining, black, the elytra blackish-castaneous; head three-fourths 

 as wide as the prothorax, the sulci deep, the orbital puncture ad- 

 joining the eye; antennae elongate, moderately slender, as long as 

 the elytra, rufo-piceous, blackish distally, the medial joints three 

 T. L. Casey, Mem. Col. VIII, Oct. 1918. 



