468 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 41. 



n 



but that species is marked much more strongly with greenish markings 

 (in obsoleta the markings are yellow), the stipes are much different, 



the second and sixth ventral segments are 

 simple (the same segments of obsoleta have 

 ventral processes). Disregarding the 

 character of the seventh ventral plate 

 olsohta runs to amoena Handlirsh which 

 is very different. 



Male. — Length 19 mm. Labrum not 

 depressed; vertex seen from in front 

 slightly biemarginate, the middle portion 

 below the top of eyes; flagellum carinate 

 beneath, the joints subdentate apically, 

 first joint slightly 

 longer than the 

 two following; 

 thorax finely gran- 

 ular ; legs normal, 

 intermediate fem- 

 ora simple; sev- 

 enth dorsal segment rather narrowly truncate 

 apically; second ventral segment with a low, 

 median process which is truncate apically; 

 sixth ventral segment with the process biden- 

 tate apically; seventh ventral segment with a long, median spine, the 

 apex of which is bidentate; gentalia stipes as in figure 8. Black; 

 clypeus, labrum, mandibles (except piceous 

 apices), inner orbits almost to vertex, small 

 spot on supraclypeal area, scape in front, legs 

 from below near middle of femora (except 

 tibiae above), lateral spots on first to fifth dor- 

 sal and second to fifth ventral segments inclu- 

 sive bright yellow. Wings clear hyaline, vitre- 

 ous; venation pale brown; head, thorax, and 

 base of first segment with white pubescence. 



Los Angeles County, California. Five males collected by Mr. 



Fig. 6.— Apical joints of the flagel- 

 lum OF Bembyx obsoleta Howard. 



r 



Fig. 7.— Apical ventral plate 

 OF Bembyx obsoleta How- 

 ard. 



Fig. 8.— Apex of genitalia 

 stipes of Bembyx obsoleta 

 Howard. 



D. W. Coquillett. 



Familv GORYTIDiE. 



Genus GORYTES Latrielle. 



, GORYTES NIGRIFRONS Smith. 



Gorytes nigrifrons Smith, Cat. Hym. Brit. Mus., vol. 4, 1856, p. 368. 



Gorytes (Gorytes) neglectus Rohwer. Proc. U. S. Nat. Mus., vol. 40, 1911, p. 567. 



In this connection it will be well to call attention to some errors of 

 numbering in Fox's table ^ of American Oorytes. 



» Proc. Acad. Nat. Sci. Phila., 1895, pp. 517-539. 



