188 AMERICAN HYMENOPTERA. 



Hab. — Southern California, one sent by Mr. Fox, P. emnarpha 

 is a fine species, allied to P. rhodocerata (Ckll.), but considerably 

 larger. These insects are at least subgenerically distinct from typical 

 Parandrena. 



(10.) Andreiia foxii n. sp. 9 ■ — Nearly 12 mm. long, blue-black, the pubescence 

 entirely black or dark fuscous. Head rather large ; facial quadrangle broader than 

 long; antennae dark, faintly brownish at the tip; face with abundant long black 

 hair; front striate; clypeus dull, with small close punctures, no inipunctate 

 median line; tongue broad and short; mandibles dark; process of labrum strongly 

 bifid; thorax quite hairy ; mesothorax dull, with strong median and parapsidal 

 grooves, its surface microscopically tessel late and feebly punctured ; base of nieta- 

 thorax minutely rugulose ; tegulse. piceous ; wings hyaline, slightly smoky; 

 nervures and stigma piceous; stigma large; only two submarginal cells, second sub- 

 marginal longer than the first on the cubital nervure. receiving the recurrent 

 nervures at the end of its first and beginning of its last fourths ; legs black, very 

 hairy; abdomen shining; microscopi<-ally tessellate and sparsely punctate; the 

 hind margins of the segments brownish; no hair-bands; apex densely clotlied 

 with sooty hair. 



%i . About lOi mm. long, similar to the 9 • ''ut dull white hair on the cheeks, 

 front, occiput and thoracic dorsum ; basal joint of hind tarsi with a dense ochre- 

 ous brush on inner side; wings somewhat clearer. 



Hab. — Southern California, three sent by Mr. Fox. A very dis- 

 tinct species, constantly with only two subniarginals. I had marked 

 it as a new Parandrena, but it is strictly congeneric with A. chalybea, 

 and with it forms a subgenus which must have been derived from 

 Andrena s. str., independently from Parandrena. 



(11.) Andrena phenax n. sp. 9- — Length 9i mm., black, with black 

 pubescence; quite shiny. This looks like a small example of rl./oxii but differs 

 in many details, as follows: — Color black, without the blue tinge; head broader 

 in proportion to its leug,th ; vertex and front with large punctures ; clypeus with 

 large and very close punctures; process of labrum rounded at end, not emargi- 

 nate ; mesothorax shining, though micro.scopically tessellate, with large and 

 strong punctures; tegulse with a testaceous area behind ; wings pale fuliginous; 

 second submarginal cell not so long as the first on the cubital nervure ; recurrent 

 nervures entering second submarginal at end of first and beginning of last fifths ; 

 pubescence of hind legs short and dense ; abdomen very shiny, with very dintinct 

 and tolerably close punctures, smaller and sparser on the first segment; surface 

 less hairy; hind margins of segments not brownish. 



Hab. — Southern California, one sent by Mr. Fox. Besides having 

 only two submarginal cells, this differs from A. nigra Prov., in the 

 total absence of a smooth line down the middle of the clypeus, and 

 the color of the teguke. It doubtless differs in other characters, not 

 mentioned in Provancher's short description of nigra. It should 

 not be confused with Hatictoides maurus, which has much smaller 

 punctures on the mesothorax, base of methorax with regular raised 

 lines, and pre.sents many other differences when examined carefully. 



