18 Journal New York Entomological Society. t Vo '- xxvii. 



One specimen from Ramsey, N. J., August 22, 1909. Type in 

 American Museum of Natural History. 



This fine large species is very similar to E. longiceps Ashm. in 

 appearance, but is easily distinguished by the petiole of the abdomen 

 being entirely smooth. The petiole is striate in both sexes of E. 

 longiceps. 



Explanation of Plates I and II. 



Fig. 1. Serphus zabriskiei new species, a, apex of abdomen and ovi- 

 positor; b, stigma and cell; c, base of flagellum of antenna. 



Fig. 2. Serphus sequoiarum new species. Stigma and cell of wing and 

 base of flagellum of antenna. 



Fig. 3. Serphus cockerelli new species. Stigma and cell of wing and 

 base of flagellum of antenna. 



Fig. 4. Serphus d chilis new species. Stigma and cell of wing, and base 

 of flagellum of antenna. 



Fig. 5. Cryptoserphus flaripcs Prov. Stigma and cell of wing and base 

 of flagellum of antenna. 



Fig. 6. Cryptoserphus abrupt us Say. Stigma and cell of wing and base 

 of flagellum of antenna. 



Fig. 7. Cryptoserphus occidentalis new species. Stigma and cell of wing 

 •and base of flagellum of antenna. 



Fig. 8. Cryptoserphus melanderi new species. Stigma and cell of wing 

 and base of flagellum of antenna. 



Fig. 9. Plurnoserphus longipes new species. Stigma and cell of wing 

 and base of flagellum of antenna. 



Fig. 10. Exallonyx august iceps Brues. Stigma and cell of wing and 

 flagellum of antenna. 



Fig. 11. Exallonyx similis new species. Stigma and cell of wing and 

 base of flagellum of antenna. 



Fig. 12. Exallonyx pi acid us Brues. Stigma and cell of wing and base 

 of flagellum of antenna. 



Fig. 13. Exallonyx fuscicornis new species. Stigma and cell of wing 

 and second to sixth joints of flagellum of antenna. 



Fig. 14. Exallonyx ashmeadi new species. Stigma and cell of wing and 

 base of flagellum of antenna. 



Fig. 15. Exallonyx pleural is new species. Stigma and cell of wing. 



Fig. 16. Exallonyx scrricornis Brues. Stigma and cell of wing and base 

 of flagellum of antenna. 



Fig. 17. Exallonyx simplicior Brues. Stigma and cell of wing and fla- 

 gellum of antenna. 



Fig. 18. Exallonyx pallidicornis new species. Stigma and cell in wing 

 and flagellum of antenna. 



Fig. 19. Exallonyx carinatus new species. Stigma and cell of wing and 

 flagellum of antenna (first five joints above, last seven below). 



