THE CANADIAN ENTOMOLOGIST, 179 



THE SMALLER BEES OF THE GENUS ANDRENA FOUND 



IN NEW MEXICO. 



BV T. D. A. COCKERELL, MESILLA, NEW MEXICO. 



None of the species herein described Or listed are as much as lo 

 mm. long. 



I. Marginal cell truncate. 



The species of this section are not true Andrena, but will form a 

 distinct genus, apparently as near to Prosapis as to Andrena. Two of 

 the larger species, A. asclepiadis, Ckll., and A. mexicanorum, Ckll., are 

 congeneric. I have before me also a species from Texas.* 



i. Tarsi piceous in female. 



Andrena trifoliata, n. sp. — $. Length nearly lo mm. Closely 

 similar in all respects to A. viaurida, but differing in being slightly 

 smaller, the eyes dull slate colour, not at all greenish ; the clypeal mark 

 smaller, paler, and more distinctly trilobed ; the front more sparsely 

 punctured, with minute punctures between the large ones ; the last 6 or 

 7 joints of the flagellum becoming testaceous ; the wings not rufescent, 

 but the apical half slightly smoky ; the third submarginal cell more 

 narrowed above, the first recurrent nervure entering the second submar- 

 ginal cell at the end of its second third; the legs black; the abdomen 

 with the basal white hair-bands on segments 3 and 4 entire ; the hairs on 

 venter very few, and whitish. The metalhorax and postscutellum are 

 quite black, not at all brownish. The pale, cream-coloured face-mark is 

 shaped something like a vine leaf 



* Andre)ia inaiirida, n. sp. — Female. Length nearly 10 mm. Black, no more 

 pubescent than a Prosapis, strongly punctured. Head liroader than long, face very 

 l)road ; eyes rather small, dull olive green ; clypeus arcuate below, its upper half, just 

 enclosing the black dots, and extending as a rounded lobe downwards in the median 

 line, pale primrose yellow. A very narrow, sometimes interrupted, pale yellow supra- 

 clypeal transverse mark. Labrum prominent, truncate, with a small longitudinal 

 keel Clypeus with large but rather sparse punctures, median line impunctate. Front 

 and vertex closely jjunctured. Antennae, short, dark brown, scape punctured. Thorax 

 somewhat shining, bare except the minutely pubescent hind border of prothorax, lower 

 part of pleura, and lateral angles of metathorax. Median and parapsidal grooves distinct. 

 Mesothorax and scutellum strongly and clo.sely punctured ; postscutellum and meta- 

 thorax slightly brownish, coarsely granular, or so closely punctured as to seem so ; 

 metathorax with a deep pit, enclosure not defined, except by an impunctate band at 

 sides, basally very obscurely wrinkled. Tubercles light yellow, teguke testaceous with 

 a yellow patch. Wings stained with ferruginous, nervures and stigma fiark rusty 

 brown, marginal cell truncate. Legs dark brown, the four anterior knees light yellow. 

 Abdomen strongly and closely punctured, segments after the first with more or less 

 distinct lateral basal white hair-bands. Anal fimbria ochreous. Hairs on venter more 

 or less tinged with ochreous. 



Habitat. — Texas ; three collected by Belfrage, and now in U. .S. Nat'l Museum. 

 One bears the number 237. 



