HYMENOPTERA FROM LOWER CALIFORNIA. 23 



fourth and fifth segments with a broad, bright yellow 

 band: ventrally the abdomen on the sides is fulvous, the 

 middle part black, segments two to five with a fringe of 

 long, white pubescence; wings sub-hyaline, nervures and 

 stigma black; clypeus strongly and sparsely punctured; 

 labrum densely clothed with pale pubescence, which is 

 longest anteriorly. Length, 16-20 mm. 



Guaymas, Mex. {E/'sen). May. Resembles very much 

 and is related to Centris fasciata Smith, from Jamaica, 

 but is distinct in having the pygidium larger, the pubes- 

 cence on thorax darker and the scape is entirely black. 



BoMBUs cALiFORNicus Sm. El Rosario, L. Cal. 

 {Haines). May. Two specimens. 



BoMBUs soNORENSis Say. San Jose del Cabo {Eisen) 

 and Comondu (//rt///g5), L. Cal. March. Seven females 

 and six neuters. 



Apis mellifica Linn. San Jose del Cabo (E/sen). 

 Calamujuet, San Borgia and El Paraiso, L. Cal. {Haines). 

 May. Numerous specimens. 



ADDITIONAL SPECIES. 



Since compiling the preceding paper Mr. Eisen has 

 sent me a small collection from San Jose del Cabo, which 

 contains the following additional species : 



NoTOGONiA ARGENTATA Bvc. {=Larra argeutata^wQ.). 

 One 6 specimen. 



POMPILUS CONNEXUS n. Sp. 



? . — Head [and thorax black ; abdomen dark ferrugi- 

 nous ; head, thorax and legs covered with a plumbeous or 

 cinereus pile, except the vertex, dorsulum and scutellum, 

 the pronotum above also lacks this pile medially, the pile 

 on its posterior margin connected with that on its anterior 

 portion by a narrow central line of pile; wings blue- 

 black, third submarginal cell not at all petiolate, with a 



