288 ENTOMOLOGICAL NEWS [DeC, '19 



Andrentdae. 



Andrena birtwelli Ckll. T. S., 1 $ at PotcntiUa. 



Andrena lewisii Ckll. T. S., 1 $ at Rosa. 



Andrena moesticolor Vier. & Ckll. L. P. T., at PotcntiUa, 1 $. 



Andrena apacheorum Ckll. L., 1 $ , 1 ^ . L. P. T., 3 ^ , at 

 Erigcron and Scnccio. 



Andrena topazana Ckll. L., l $, July 19, the dorsal pubescence 

 gone and wings tattered. 



Sphecodes eustictus Ckll. L.. 5 9. T. S.. 1 $ . H.. 1 9. T. L., 

 1 9. This species has remarkable altitudinal range; it was describ- 

 ed from the lower part of the Transition Zone. 



Sphecodes millsi n. sp. 



S . Length about 7 mm. ; head and thorax black, with silvery white 

 hair, dense on face- apical half of mandibles red; legs black, with the 

 knees, fore tibiae except a large mark on outer side, apices of 

 middle and hind tibiae, and all the tarsi, clear ferruginous; antennae 

 long, moniliform, the flagellum dull testaceous beneath; second and 

 third joints equal, and combined almost as long as fourth; mesothorax 

 and scutellum highly polished, with sparse but distinct punctures ; area 

 of metathorax iarge, semilunar, covered with coarse vermiform rugae; 

 posterior truncation very coarsely punctured ; tegulae dark reddish 

 brown ; wings hyaline, stigma and nervures fusco-ferruginous ; third 

 sul)marginal cell very lar'^e, broad above ; spurs pale ferruginous : 

 abdomen elongate, smooth and highly polished ; first segment black 

 with apical margin broadly red ; second and third red with a broad 

 black band, sufiFusedly interrupted laterally ; fourth black with apical 

 margin broadly red ; fifth black, as also sixth ; apical plate red. 



Longs Peak Inn, on an umbelliferous flower, July 21 

 (Cockerell). Named after Enos Mills. Allied to 6*. clema- 

 tidis Rob., but larger, wi^h the abdomen differently marked. 

 From 6^. sulcatulns Ckll. it is easily known by the largely red 

 legs. 



Halictus leroiixii Lepel. T. S., 1 ^ at Orcocarya inrgata. 



Halictus galpinsiae Ckll. T. L., 1 ^ . I was astonished to find 

 this at such an altitude. 



Halictus virgatellus Ckll. L., 1 $. The male is new, and is 

 determined as this species because it has the characters to be expected 

 in male lirgatclhis. Tt differs from H. typographicus Ckll. by the 

 . entirely dark antennae, gray'sh wings and much darker stigma. 



Halictus pruinosiformis Crawf. L., 1 9 . 



Halictus peraltus Ckll. L.. 1 $, July 19 (W. P. C). 



Halictus nigricallis Vachel. L., 1 $ . The tubercles have a small 

 inconspicuous pale spot posteriorly. 



