30 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES 
Melissodes actuosa, Cresson, (or n. sp?) 
Male. Length about 914 mm.; elypeus yellow, with the sides 
broadly black; labrum black with a large round yellow spot; 
mandibles black ; antenne very long, and entirely black; meso- 
thorax and scutellum dull black, not punctured; pubescence 
long but scanty, sordid whitish; tegule dark rufous; nervures 
dark, second submarginal cell broader than high, third ab- 
ruptly truncate, and narrowed at least half to marginal; ab- 
domen without bands, hind margins of segments narrowly 
’ rufescent; short lateral spines on sixth segment, none on fifth; 
hind tibiee with conspicuous raised points. 
Hab. Lancaster, California, one male with the pubescence 
largely worn off, collected by Dr. Davidson. M. actuosa has 
hitherto been described only in the female, and the reference 
of the present male to it must be regarded as provisional. If 
this is not the male of actuosa, it is a new species. 
Melecta californica, Cresson. 
Bear Valley, three specimens, collected by Dr. Davidson. 
Zacosmia maculata, (Cresson). 
Strawberry Valley, one collected by Dr. Davidson. 
Halictus farinosus, Smith. 
Larger than the next species, with reddish tegule. Los 
ane (Davidson). 
Halictus titusi, Crawford. 
Tegule dark. Los Angeles, (Davidson). This species is 
allied to H. pacificus, Ckll., but the plications of the base of the 
metathorax are much finer. I have a specimen from Mr. 
Crawford. 
Diadasia rinconis opuntiz, Ckll. 
Los Angeles, (Davidson). 
Anthophora curta, Provancher. 
Los Angeles, (Davidson). 
Anthophora maculifrons, Cresson. 
Bear Valley, (Davidson). The females of this and the last, 
both small species, may be distinguished thus: 
Vertex and occiput with pale ochreous (not black) hair; 
facellum, redabemeathewern (66 aa ee maculifrons 
Vertex and occiput with black hair; flagellum dark; basal 
half of second abdominal segment nude.......... curta 
Anthophora gohrmane, Ckll. 
Los Angeles, two (Davidson). Abdomen faintly metallic, 
without. conspicuous hair-bands. Previously known only from 
New Mexico and Colorado. : 
