14 CALIFORNIA ACADEMY OF SCIENCES. 



the second, impunctate ; the remaining segments coarsely 

 punctured, the second ventral sparsely so ; black, a curved 

 mark around base of clypeus; anterior margin of pro- 

 notum, two spots on each tegula, spot beneath base of 

 wing and the postscutellum, whitish; apical margins of 

 first and second dorsal and second ventral segment, also 

 whitish, that on second ventral interrupted medially; 

 wings, with exception of the marginal and median cells, 

 which are fuscous, hyaline, nervures and stigma black; 

 legs entirelv black. Length, 12 mm. 



San Jose del Cabo. L. Cal. {Eiscii). Related to 

 Megc27'a, foraminatus and Iciicoiiiclas, but is very distinct 

 from all three. 



VESPID^. 



PoLisTEs CARNIFEX Sauss. A Variety of this species. 

 San Jose del Cabo, L. Cal. {E/'seii). Two specimens. 



PoLisTES BEELicosA Cress. El Paraiso, L. Cal. 

 {Haines). May. One specimen. There are in the 

 collection three other species of this genus, which at 

 present I am unable to identify. 



ANDRENID^. 



Halictus spp. Two specimens, representing two 

 species. San Jose de Gracias and San Jorge, L. Cal. 



Halictus desertus Sm. One ? . Lower Purisima, 

 L. Cal. {Haines). April. 



Agapostemon sp. One 5 . San Jorge, L. Cal. 

 {Haines). March. This species occurs also in the United 

 States. 



Andrena spp. Two species of this genus, collected 

 by Haines in March at the following localities, viz. : Co- 

 mondu, El Paraiso and Margarita Island, L, Cal. 



