112 CALIFORNIA ACADEMY OF SCIENCES. 



San Jose del Cabo, October. Seven specimens. Re- 

 lated evidently to Guzniani and occidental is Saiiss. 



Odynerus acohuues Sauss. Seven specimens. San 

 Jose del Cabo, October. 



Odynerus Iturbidi Sauss. West side of El Taste, 

 September. One specimen, a female, which, although 

 the 3 only is described, seems to belong to this species. 

 As I have not seen O. Iturbidi 6 . I am not sure that this 

 specimen is properly assigned. 



Odynerus {Alastor) mp:xicanus Sauss. San Jose del 

 Cabo, October. Two specimens. 



VESPIDvE. 



PoLisTES BELLicosus Cr. One specimen. El Taste, 

 3,400 feet. This specimen lacks the two yellow lines on 

 metathorax. 



PoLiSTES spp. Two species, neither of which I can 

 identify. They are very likely varieties of some described 

 form. 



PoLisTES carnifex Fab. San Esteban, April {Haines) ; 

 El Taste, 3,400 feet. This is a variety differing in lack- 

 ing the yellow on the head (vertex and cheeks), the pleura 

 with but a yellow spot beneath the wings, prothorax only 

 margined with yellow, and none of that color on the meta- 

 thorax, the yellow at apex of second abdominal segment 

 is sometimes emarginate on each side anteriorly. There 

 is in the collection a specimen of the typical form of this 

 species, which is of unusual size, measuring 33 mm. 



andrenid^. 



Halictus ligatus Say, Several 6 and ? specimens. 

 San Jose del Cabo, October. 



Agapostemon sp. Five ? specimens. San Jose del 



