196 POMONA COLLEGE JOURNAL OF ENTOMOLOGY 



at apex. Volsella quite prominent. Seventh ventral plate fan shaped ; each 

 wing with a broad, rounded emargination at apex, densely haired in a V 

 shape, extending along the margins ; but almost no hair in the apical median 

 space. No tufts of hair anywhere. 



Type locality — Guadalajara, Mexico. Described from three males and 

 fifteen females. 



Colletes lineata n. sp. 



Male — Length 10 mm. Black, rather slender; pubescence, brownish. 

 Head — A little broader than long, eyes converging below, but margin almost 

 straight. Face densely clothed with rather dense and long ochraceous 

 pubescence, noticeably darker on clypeus and base of antennre. Clypeus convex, 

 thickly punctured, but not .striate, except a portion near margin ; punctures 

 smaller and closer medially. Malar space one-fourth to one-fifth as long 

 as broad. Tips of mandibles reddish. Face punctured ; vertex very thickly 

 so. Antennje solid black ; scape short with dark ochraceous hairs ; third joint 

 shorter, broader, and more densely covered with minute black pubescence than 

 other joints of flagellum ; remaining joints about twice as long as broad. 

 Hair on under side of head long, dense, same color as the lighter part of 

 facial pubescence. 



Thorax — Dull, covered with rather short brownish hair, except on sides of 

 metathora.x, where it is long and light. Mesothorax covered with rather large 

 round punctures, thicker anteriorly, sparse on medium sized disk. Scutel- 

 lum with larger punctures, well separated in front, thicker on posterior half. 

 Postscutellum rugose. Superior face of metathorax shining, with a number 

 of rather narrow pits. I'osterior face shining, enclosure funnel shaped ; neck 

 rather narrow, about twice as long as wide at base ; lateral faces with very 

 large, pit-like, shallow punctures, forming rugre, or irregular widely separated 

 ridges. Mesopleura densely punctured ; hair beneath tegulse same color as on 

 thorax, becoming longer and lighter beneath. Tegulse black. Wings hyaline, 

 nervures brownish. 



Abdomen — Ovoid, not very shiny ; pale, usually white fascije on all seg- 

 ments except last. All segments densely finely punctured except first, which 

 has fewer. First segment with pale brownish hairs, more dense anteriorly 

 and laterally. Hair underneath sparse and dark, except for continuation of 

 fasci?e. 



Leg.s — Black ; pubescence on posterior femora long, whitish, darker and 

 shorter above ; that on tibiae shorter, denser and lighter. Tibial spurs golden 

 yellow. First tarsal joint long, four or five times as long as liroad ; apical 

 hairs on tarsi slightly golden. Claws reddish, apically cleft. First tarsal joint 

 on anterior and middle legs narrower than on posterior legs. 



Genitalia (Fig. 74) — Stipes notched, apex long and slender, curved slightly 

 inward, apical half with long hairs. Sagitt?e long, broad at liasc ; apical half 

 narrowed, and elbowed in middle, the ends pointing outward. The mem- 

 branous wing of each saggita reaches the entire length of the narrow half. 

 Volsella medium sized Seventh ventral i)late — Two long wings, each with 



