SS SOUTHERN CALIFORNIA ACADEMy OF SCIENCES. 



abominal segments have a chalky- white, ivory-colored or 

 occasionally quite yellow appearance, not at all due to 

 hair. At first, they look very like the species with white 

 or whitish hair-bands, but a close examination shows that 

 the color is in the tegument itself. The males of these 

 species may be distinguished as follows : 



Face-marks white or whitish 1 



Face-marks yellow 5 



1 . Thorax with black and dull white hair mixed ; sides of 



clypeus very broadly bordered with black ; apex of 

 abdomen with two short spines, (New Mexico) . . . 



cleomis, Ckll. 



Thorax without black hair 2 



2 . Hair on thorax pale yellowish 3 



Hair on thorax dull white or grey 4 



3. Clypeus with subbasal black spots (Illinois) 



Walshii, Cresson. 



Clypeus with subbasal short black lines (Colorado &c.) 

 Smithii, Cresson. 



4. Clypeus with subbasal black spots; apex of abdomen 



with a concave truncation (New Mexico) 



marg-inata, Smith. 



5 . Thorax with black hair 6 



Thorax without black hair 7 



6. Length 13 mm. (Mexico) , tarsata, Dours 



Smaller (So. Calif) tarsata subtarsata, n. gubsp. 



7. Hair of thorax fulvous (California to New Mexico) . . 



calif ornica, Cresson. 



Hair of thorax whitish (Los Angeles, Calif) 



quinquefasciata, Provancher. " 



There remains one species, A, texana, Cresson, of which the 

 male is unknown. The female has the hair of the thorax 

 ochraceous, slightly mixed with black. 



Anthophora tarsata subtarsata, n. subsp. 



One of each sex taken by Dr. Davidson at Los Angeles. The 

 female is a little less than 12 mm. long, and agrees with the 

 description of tarsata except that it is smaller, the hairs 

 on the sides of the ventral segments of the abdomen are 

 white (pale fulvous in tarsata), the brush on the end of the 

 first joint of the hind tarsi is ferruginous (black in tarsata), 

 and the legs are black (expect for the hair) with only the 

 tarsi dark ferruginous. It agrees in size with A. texana 

 (from Texas), but differs by the hair on face and cheeks 

 being ochraceous (white in texana), the apical part of the 

 mandibles dark reddish (yellowish in texana), the hair of 

 vertex and thorax being copiously mixed with black, and 

 the abdominal segments beyond the first having much short 



