HYMENOPTERA FROM LOWER CALIFORNIA. 21 



Megachile pollicaris Cress. One female. El 

 Paraiso, L. Cal. {Haines). May. 



Megachile exilis Cress. One male. San Ignacio, 

 L. Cal. {Haines). April. 



Ceratina sp. Evidently a new species. Margarita 

 Island, L. Cal. {Haines). March. 



Melissodes suffusa Cr. One female. San Jose del 

 Cabo, L. Cal. {£isen). There are in the collection four 

 other species of this genus, which I have been unable 

 to identify. 



Diadasia apacha Cress. Melissodes a^acha Cr. Proc. 

 Acad. Nat. Sci. Phila., 1878, p. 217. Five specimens. 

 San Julio, San Esteban and San Jose de Gracias (April), 

 El Paraiso (May). All collected by Haines. 



Diadasia enavata Cress. One male. Comondu, 

 L. Cal. {Haines). March. 



Diadasia diminuta Cress. One male. San Jose de 

 Gracias, L. Cal. {Haines). April. 



Anthophora maculifrons Cress. One female. San 

 Jose del Cabo, L. Cal. {Eisen). 



Anthophora sp. San Esteban, L. Cal. {Haines). 

 April. A species closeh^ allied to A. iirbana Cress. 



Anthophora sp. San Jose del Cabo, L. Cal. {Eisen). 

 Occurs also in California proper. A small species re- 

 lated to A . exigua Cr. 



Xylocopa arizonensis Cress. Comondu (March). 

 El Rancho Viejo (April) and El Paraiso (April and May). 

 Collected by Haines. Six females. 



Xylocopa orpifex Sm. Comondu (March), El Pa- 

 raiso (May). Collected by Haines. Seven females, one 

 male. 



Xylocopa sp. A large black species, which may be 



