46 Myron Harmon Swenk 
metathorax with about 8 distinct longitudinal ridges, and bounded by a 
strong single ridge (in prosopidis the bounding ridge is generally double). 
The tarsi are clear bright ferruginous; nervures and stigma very dark 
brown; malar space but little broader than long. 
The specific name is derived from that of the subgenus to which the 
mesquite belongs. From C. daleae the ¢ differs by the broader and shorter 
abdomen, dark stigma and tegulae, and the malar space is much shorter 
than in daleae.”’ (Original description.) 
Type Locarity.—Mesilla Park, New Mexico;,.types in collec- 
tion of Professor T. D. A.. Cockerell. 
This species I have not examined, but it seems to be distinct. 
Professor Cockerell took the types on May 20 at the flowers of 
Prosopis glandulosa. 
Colletes scopiventer n. sp. 
2. Length 9.5 mm. Very similar to C. teranus 9, but larger, the outer 
spur of hind tibiae microscopically ciliate instead of coarsely pectinate, the 
mesothorax similarly but more finely punctured and with sparse punctures 
on the disk. 
3d. Length 9.5 mm. Like the 2 except as follows: Face with long, 
dense, gray hair, covering clypeus; malar space one-third as long as wide; 
joint 3 one-half as long as 4 or 5, the proportion being 3:6:6; flagellar 
joints one and one-half times as long as wide; basal joint of hind tarsi 
three and one-half times as long as broad; apical margins of abdominal 
segments 1-5 depressed, of 1 distinctly constricted; abdominal segment 1 
polished, finely, scatteringly punctured, and with long white hair, 2 coarsely, 
closely punctured, dull, disks of 3-5 with long, white bristles. 
Genitalia—Stipes notéhed, its apex long, slender, claw-like; sagittal 
rods subparallel, gradually tapering toward apex, expanded into large oval 
wings; volsella large; seventh ventral plate with the lobes suboval, their 
disks subuniformly pilose, heavily chitinized basally. (Plate 3, figures 13 
and 13a.) 
Type Locarity.—Fedor, Lee county, Texas; types in collec- 
tion of the author. 
The type female and male were taken on April 1, 1902, and 
March 21, 1899, respectively, by Rev. G. Birkmann. I have no 
further information regarding this species, which is a close ally 
of teranus, 
SPECIMENS EXAMINED—Texas: Fedor, 2. 
88 
