HYMENOPTERA FROM LOWER CALIFORNIA. 261 



Sph^rophthalma magna Cress. San Jose del Cabo. 

 Thirteen specimens. 



Sph^erophthalma gloriosa Sauss. San Jose del 

 Cabo. Fifteen specimens. The ground color of this 

 species varies considerably; usually entirely red, yet 

 forms occur with it entirely black, but forms intermediate 

 are commoner. The color of the unusually long, white 

 pubescence with which the species is clothed is invariable. 

 The size varies from 8-17 mm. 



Sph^rophthalma xalapa B1. San Jose del Cabo. 

 One specimen. 



SCOLIID^. 



Myzine hamata Say. Three females. San Jose dei 

 Cabo and Tepic. The markings of the abdomen show 

 considerably variation in this species. The form occur- 

 ing in the eastern United States usually has the third and 

 fourth dorsal segments, in the $ , banded with yellow; in 

 the two specimens from San Jose these bands are inter- 

 rupted medially, but are more prolonged than the lateral 

 spots on the other segments ; in the Tepic specimen the 

 third segment only is banded. 



Myzine hyalina Cress. One S • San Jose del Cabo. 



Myzine sexcincta Fabr. What I take to be a variety 

 of this species is represented in the collection by a single 

 ? from Tepic. Dorsal abdominal segments 1-4 are each 

 marked by a broad yellow band; the coxge, trochanters 

 and basal two-thirds of the femora black; flagellum 

 blackish. I considered this specimen at first as repre- 

 senting a new species, but the absence of substantial 

 structural characters together with the fact that forms, 

 more or less intermediate with the typical one, occur in 

 the United States, led me to consider it but a variety. 



