HYMENOPTERA FROM LOWER CALIFORNIA. lOI 



Pepsis RUBRA Druiy. About fort}- specimens of this 

 common and widely distributed species. San Jose del 

 Cabo and Todos Santos, October. El Taste, 3,400 feet. 

 The series before me shows considerable variation, some 

 lack the white tip to wings, and in several males the ful- 

 vous is confined to the central part of the wing. One ? 

 specimen measures but 21 mm. 



Pepsis hesperi^ Patt. One 3 specimen. West side 

 of El Taste. This species seems to be closely allied to 

 P. Andrei Mocs., to which species I had at first referred 

 the specimen. 



Mygnimia sp. El Taste, 3,400 feet. A specimen that 

 differs only from iistulatus by the distance between the 

 hind ocelli and the eyes being about twice greater than 

 the space between them. 



SPIIECIDyE. 



Ammophila quadridentata Cam. West side of El 

 Taste, September. One specimen. 



Ammophila s^va Sm. El Taste, 3,400 feet. One 

 specimen. A. strioJata Cam., seems to be very close to, 

 if not identical with, this species. 



Ammophila macra ? Cress. Three 5 specimens from 

 El Taste, 3,400 feet, that differ somewhat from niacra. 

 They may represent the 3 of sceva. 



Ammophila pruinosa Cress. San Jose del Cabo, 

 October. Seven specimens. 



Ammophila Yarrowi Cress. Numerous specimens. 

 San Jose del Cabo, October. The ? is larger than the 

 6 , the thorax more densel}' pruinose, the red on legs and 

 abdomen brighter and more extended. 



Ammophila sp. Eight ? and nine 5 specimens of a 

 species that I cannot place. San Jose del Cabo, October. 



