THE CANADIAN ENTOMOLOGIST. 77 



less fine apically, the second and following segments finely and very indis- 

 tinctly punctured, all the segments, and especially the basal one, sparsely 

 covered with long bristly hairs, denser and tending to form fringes on the 

 apices of the segments, which are depressed on segments 1-4. Length, 

 10- 1 1 mm. 



^ . — Similar to the 9 , but smaller ; the pubescence of the face longer 

 and denser, and together with that of the cheeks near the mandibles 

 mostly grayish ; the pubescence on under parts in general mixed with pale 

 hairs, often conspicuously so on anterior femora ; malar space longer, as 

 long as width of mandible at base 3 antennae much longer, with the basal 

 joints of flagellum subequal ; wings unusually long, extending well beyond 

 the tip of abdomen. Length, 8-9 mm. 



Fourteen $ ? and four $ S- Volcano Irazu, February 23, 1992 

 (L. Bruner). Types in collection of University of Nebraska. An 

 extremely abundant species on the volcano, at an elevation of 8,500 to 

 9,500 feet, where the earth in many places is completely riddled with its 

 burrowings. 



Colletes Bruner i, n. sp. — 9. Black; clypeus bare and rough, 

 coarsely and confluently punctured, transversely depressed before apex; 

 face crowded with small confluent punctures forming a rough surface, and 

 covered with short dirty gray pubescence ; vertex finely punctured, bare 

 except for a tuft of pale fulvous hairs between the ocelli ; occiput fringed 

 with long, pale fulvous hairs ; cheeks finely roughened, with sparse short 

 gray pubescence: malar space so short as to be almost lacking; mandibles 

 dull black, grooved, notched near the blunt reddish-tinged tip ; labrum 

 dull, roughened by numerous fine striae; antennae dull black, the first joint 

 of flagellum but a trifle longer than second or third; prothorax without 

 spines ; mesothorax finely, closely and deeply punctured laterally, 

 sparsely so on the disc, and covered with short, bright fulvous pubes- 

 cence ; scutellum coarsely punctured posteriorly, postscutellum finely 

 roughened, both with long, erect, dense fulvous pubescence ; metathorax 

 bounded by a double rim, between which are the usual subrectangular 

 pits, which are half as wide as long ; enclosure shiny, funnel-shaped, with 

 a short, wide neck ; sides of posterior truncation dull, rough, with sparse, 

 pale fulvous pubescence ; pleura thinly pubescent, with large, close, 

 deep punctures ; tegulse pale testaceous ; wings smoky hyaline, slightly 

 iridescent, nervures and stigma blackish; third submarginal cell narrowed 

 one-third tovyard the marginal ; legs thinly covered with short gray 



