SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. 87 



3 . Clypeus yellow ( California orpif ex, Smith, male. 



Clypeus dark 4 



4. Top of head greenish, face with light hair (Surinam) . . 



: barbata, Fabr., female. 



Top of head black, face with black hair (California) . . 

 orpifex, Smith, female. 



5. Bottle-green (Northern California) . .Calif ornica, Cresson. 

 Dark steel-blue (So. Calif) 



Calif ornica arizonensis (Cresson.)* 



Xylocopa varipuncta. Patton. 



Collected by Dr. Davidson at Los Angeles; I have taken it at 

 the same place. It ranges east to Tempe, Arizona, where 

 it has been taken in numbers by Mr. Irish. It is very inter- 

 esting to find that an Indian species (X. rufescens) is so like 

 the male of varipuncta that it is difficult to point to any 

 important distinction. However, in rufescens both sexes 

 are fulvous. My material of rufescens is from Mr. Sladen. 

 X. fimbriata. Fabr., is said to have been taken in the 

 Yosemite Valley, but I have little doubt that the specimens 

 were varipuncta. X. fimbriata is a neotropical species ; the 

 most northern record that can be trusted seems to be 

 Tepic, Mexico. It is easily distinguished from varipuncta 

 by the fact that the female has a ridge on the vertex of the 

 head, interrupted in the middle, and laterally elevated into 

 conspicuous tubercles. 



Xylocopa orpifex, Smith. 



Obtained by Dr. Davidson at Los Angeles, Rock Creek and 

 Tehachapi. It goes north to Oregon, and is one of the most 

 characteristic bees of the Pacific Coast. 



Xylocopa calif ornica arizonensis, (Cresson). 



Collected by Dr. Davidson at Los Angeles ; it goes east to New 

 Mexico, and Dr. L. 0. Howard has collected it as far south 

 as San Jose de Guaymas, Mexico. In Northern California 

 it is replaced by the true californica. I reduce arizonensis 

 to subspecific rank because it seems to have no valid struc- 

 tural characters, and the color is not altogether reliable. 

 Mr. J. A. Gr. Rehn has very kindly compared Cresson 's types 

 of californica and arizonensis, and finds that both have the 

 tubercle before the anterior ocellus in the female. The 

 color is very different, but Mr. Rehn says that one of Cres- 

 son 's types of californica has the abdomen colored as in 

 arizonensis. 

 *The species from other regions are included for comparison. 

 Anthophora. 



There are several species of Anthophora, belonging to the sub- 

 genus Amegilla, Friese, in which the hind-margins of the 



