Vol. 1] Bradley. — The Taxonomy of the Masarid Wasps 429 



Second to fourth dorsal segments constricted basally ; first segment 

 almost flat basally ; tergites densely and very finely punctate in the 

 middle, becoming imperceptibly punctulate laterally and more sparselj^ 

 but distinctly punctate basally ; four processes of last segment acute, 

 the inferior ones smaller and closer together ; second sternite raised 

 at base, the raised portion divided by a median longitudinal depressed 

 line; process of third segment with a truncate molar-like anterior 

 surface, posteriorly produced into an acute tooth. 



$. Black ; the following parts yellow : mandibles except tip, clypeus 

 except 2 crescent shaped spots, labrum, large triangular spot above 

 clypeus, inner orbits convergent behind the ocelli, broad line behind 

 the eyes, spot on scape and third antennal segment, humeri very 

 broadly, posterior margin of pronotum broadly, tegulae, most of meso- 

 pleura, spot on metapleura, 2 longitudinal lines on mesonotum, apical 

 half of scutellum, postscutellum, propodeum except for 2 triangular 

 spots, all coxae and trochanters in front, femora in front and at tips 

 behind ; the anterior femur except at base behind, all tibiae and tarsi, 

 broad subapical band on first dorsal segment, incised anteriorly, sub- 

 apical band on second, third, and fourth, occupying entire segment at 

 sides, fifth dorsal segment, sixth at base, spots on first ventral segment, 

 second ventral segment except at base, third, fourth, and fifth ventral 

 segments, and the sixth except at base and apex ; antennal club ferru- 

 ginous, yellow beneath ; third, fourth, fifth, and sixth antennal seg- 

 ments shading from yellow into ferruginous ; wings stained yellow ; 

 veins, yellow to ferruginous. 



Front granular, clypeus finely so, hind ocelli equally distant from 

 each other and from the eyes. 



Humeral angles marked by a feeble ridge ; dorsum granular, more 

 finely so on the flattened portion of the mesonotum ; scutellum granular, 

 with larger scattered punctures ; pleura with shallow punctures. 



Aliddle femur flattened beneath, the anterior lower margin with a 

 ridge ; the tibia seen from in front gradually widened from base to 

 apex, three-quarters as long as the tarsus ; metatarsus nearly as long 

 as the following segments united ; posterior tibia three-quarters as long 

 as the tarsus ; this slightly exceeding the remaining segments united. 

 The radial cross-vein distant from K^ by a little over one-lialf the 

 distance between M,^^ and M^ on the margin of the cell R^^.,. 



Abdomen opaque, closely punctured dorsally ; second and third 

 dorsal segments depressed at base. 



Types.— (^, 5 fU. S. National Musemn, no. 13734] . 



California: Los Angeles Co., April, J*. $ (D. W. Coquillett), 

 [types, U. S. National Museum] ; Claremont, J*, 5 [Cornell University] ; 

 Southern California, 4 5 [American Entomological Society] ; Sierra 

 Nevada, 2 5 [American Museum of Natural History] ; Soboba Springs, 

 Riverside Co., 2 5» Jnne 1, 1917, on Eriodyction crassifoUum (B. P. 

 Van Duzee), [California Academy of Sciences] ; Southern Sonoma Co., 

 1 J*, April 16, 1911 (J. A. Kusche), [California Academy of Sciences]. 



Mr. Van Duzee informs me that he observed 4 specimens at Soboba 

 Springs, all visiting Yerba Santa, Eriodyction crassifoUum, but was 

 able to collect onlv two of these. 



