PARASITIC HYMENOPTERA. I 23 



of mesonotum, scutellum, metathorax, mesopleura, me- 

 sopectus and abdomen red; head, antenna?, prothorax, 

 lateral lobes of mesonotum, tegula?, wings and legs, black. 

 Head quadrate, the vertex smooth, the face rugose, 

 sparsely pilose; palpi fuscous; antenna? a little shorter 

 than body, tapering toward tips; the pronotum is crenated 

 at sides; the mesonotum, except the posterior part of the 

 middle lobe just in front of the scutellum, which is strongly 

 transversely crenated, is smooth and shining; metathorax 

 reticulated and with a median longitudinal carina; wings 

 black, the recurrent nervure very nearly interstitial, the 

 second submarginal cell onlv about two-thirds the length 

 of the first; there is a white streak at the junction of the 

 recurrent and first transverse cubital nervures. 



Abdomen a little longer than the head and thorax 

 united and a little broader than thorax; first segment 

 reticulated with irregular sized punctures, the rugosities 

 lineated toward apex; second segment with a large hexa- 

 gonal, striated plate, the segment on each side of the 

 plate rugoso-punctate; third segment with the basal two- 

 thirds striated, the stria? becoming more or less obsolete 

 toward the lateral margins; fourth segment at extreme 

 base showing some very short stria?; otherwise, with the 

 rest of the abdomen smooth, polished; ventral valve large, 

 plow-share shaped. 



Two ? specimens from San Jose del Cabo (Eisen). 



Subfamily CHELONIN.E. 



Chelonus Jurine. 



4. Chelonus albobasilaris sp. n. 



$ . — Length, 3 mm. Black, rugoso-punctate, faintly 



sericeous; trophi, more or less of legs, and basal one-third 



of abdomen, white; two basal joints of antenn£e, rufous; 



all coxa? and the hind femora, black; anterior and middle 



