HYMENOPTERA FROM LOWER CALIFORNIA. 5 



related to Sackenii, from which it will be at once dis- 

 tinguished by the reddish body-color. 



Photopsis castaneus Cress. El Paraiso, L. Cal. 

 {Haines) May. 



Photopsis nebulosus B1. Five specimens. El Pa- 

 raiso, May, and Calmalli Mines, L. Cal., April {Haines). 

 These specimens are very large for this species. 



Photopsis glabrellus Cress. San Jose del Cabo, L. 

 Cal. {Eisen). One specimen. 



Photopsis inconspicuus B1. Margarita Island, L. 

 Cal. {Haines). March. One specimen. 



Photopsis spp. Two species, not identified. Comon- 

 du (March) and Calmalli Mines, L. Cal. {Haines). 



Photopsis nokomis B1. Two specimens. San Jose 

 del Cabo, L. Cal. {£isen). The color of the abdomen 

 in this species varies from dark " honey-yellow " to black. 



Photopsis nigriventris n. sp. 



5 . — Head scarcely as wide as the thorax, hind angles 

 rounded; vertex with strong, sparse punctures, those on 

 the front closer and not quite so strong; ocelli large and 

 prominent; scape punctured; mandibles strongl}^ punc- 

 tured at base, which is produced outwardly into a strong 

 angular lamina or tooth. Clypeus strongl}- depressed: 

 thorax with coarse punctures, those on the prothorax, 

 metapleurae and scutellum more or less confluent and 

 those on dorsulum sparsest; the metathorax covered with 

 large foveae or pits, the base with a strong ridge medially, 

 extending about one-fourth the length of the metathorax, 

 on each side of this ridge there is a somewhat oblique and 

 shorter ridge ; legs not at all spinose ; abdomen fusiform, 

 the first segment above with strong, separated punctures, 

 beneath on same segment the punctures are stronger and 

 confluent, dorsal segments 2-6 with fine punctures, which 



