HYMENOPTERA FROM LOWER CALIFORNIA. IO7 



hind femora above, all the tibiae at base and on outer 

 side, spot on each side of first abdominal segment, which 

 is (the spot) drawn out into a point within, fascia on apical 

 part of segments 2—6, that on the second interrupted me- 

 dially, on the third very nearly interrupted, the fourth 

 and fifth emarginate on each side anteriorly, sixth indis- 

 tinct, and spot on each side of second and third ventral 

 segments, all pale yellow, or whitish; wings subhyaline, 

 darker towards apex, nervures black, stigma testaceous. 

 Length, 13 mm. San Jose del Cabo, October. 



OXYBELUS VENTRALIS U. sp. 



? . — Produced medial part of clypeus anteriorly with 

 a large tooth laterally and slightly produced in the middle ; 

 there is also a strong tubercle or production on the clypeus 

 near the base; front and cheeks with strong, separated 

 punctures, the vertex more strongly punctured and with- 

 out a tubercle behind the ocelli ; eyes converging a little 

 towards the vertex; dorsulum as strongly punctured as 

 the vertex, at the apex, just before the scutellum, there is 

 a transverse row of elongated foveas; scutellum sharply 

 carinated and with the punctures stronger; spine ending 

 in sharp point, the squama terminating in a curved spine; 

 base of metathorax with radiating ridges, the posterior 

 surface roughly punctured and with the usual carina?; 

 metapleurag irregularly striated; mesopleur^ with large, 

 scattered punctures, which are more or less connected by 

 some coarse stri^ ; abdomen coarsely punctured espe- 

 cially the first segment. Black; head clothed with sil- 

 very pubescence, particularly the lower part of the cheeks; 

 dorsulum with a short, pale fuscous pubescence ; flagel- 

 lum beneath, fore tibi« in front, and the tarsi reddish 

 testaceous; basal half of mandibles, tubercles, outer 

 margin of tegul^e, two spots or pronotum above meso- 

 sternum, all the coxjt? beneath, spot at base of the tibiae, 



