HYIMENOPTERA FROINI LOWER CALIFORNIA. 7 



sides of abdomen faintly blackish ; the whole insect is 

 clothed with a long, pale pubescence ; segments of ab- 

 domen not fringed. Length, i6 mm. 



Two specimens. San Jose del Cabo, L. Cal. {Eisen). 

 In one specimen the ridges on metathorax are very 

 short. 



Brachycistis gen. nov. 



General appearance of Photopsis. Width of the head 

 variable. Eyes large rounded-ovate, their inner margin 

 sinuous. Ocelli large, prominent, placed in the form of 

 a triangle. Antenna long, 13-jointed, situated very low 

 down, its scape and pedicellum united shorter than first 

 joint of flagellum. Mandibles strong, tridentate at apex. 

 Pronotum situated far below level of dorsnhim, zuhich /s 

 very strongly convex ; wings ample, stigma large, one very 

 short, truncate marginal, which has a short appendicu- 

 lation at apex; three submarginal cells, the second of 

 which is usually triangular and sometimes petiolate, re- 

 current nervures received by the second and third submar- 

 ginal cells. Legs not spinose, the middle tibice with one 

 spur, their coxa^ tolerably well separated. Tarsal claws 

 curved, unarmed. Abdomen elongate, the form of the 

 first segment varying from petiolate to sessile with the 

 second segment, at the apex there is a single strong- 

 curved hook or spine, which projects beyond the seventh 

 ventral segment and curves upward. Size variable, 6-15 

 mm. Type, B. petiolatics n. sp. 



This genus, the 5 only of which is known, as is like- 

 wise the case with several other allied genera, looks on 

 first sight to be Photopsis, but the larger stigma, the re- 

 current nervures being received by second and third sub- 

 marginal cells and the one-spurred middle tiba?, will at 

 once distinguish it. The sculpture is much less strongly 

 marked than in Photopsis, some species being very smooth 



