58 ENTOMOLOGICAL NEWS. [Feb., '14 



dorsal view; 7, occiput; 8, right profile of apex of abdominal seg- 

 ment 8 and base of 9 of two specimens, superimposed and with 

 dorsa coinciding; solid line, Bay City, Texas, May 24, 1907, (the 

 specimen from which figs. 1-7 are drawn), dotted line, Williams Lake, 

 Matagorda County, Texas, May 26, 1907. This figure shows the 

 difficulty or impossibility of using the shape of the apex of 8 as a 

 definite character. Fig. 9, vulvar lamina ; 10, left profile of abdominal 

 segment 9, showing position of vulvar lamina; n, postocellary ver- 

 tical ridge, dorsal view ; 12, occiput. All female figures from a 

 specimen from Bay City, Texas, May 27, 1907. 



Figs. 13-23, Gomphus submedianus; figs. 13-20, male, Bay City, 

 Texas, May 24, 1907; figs. 21-23, female, Wister, Oklahoma, June 4, 

 1907. 13, 14, 15, lateral, dorsal and ventral views of abdominal ap- 

 pendages; 16, accessory genitalia; 17, anterior lamina; 18, left superior 

 abdominal appendage, externo-dorsal view; 19, postocellary vertical 

 ridge, dorsal view; 20, occiput; 21, postocellary vertical ridge, dorsal 

 view ; 22, occiput ; 23, vulvar lamina. 



Figs. 24-35, Gomphus pallidus; figs. 24-29, male, Salt Lake, St. 

 Petersburg, Florida, March 31, 1913, L. A. Williamson; figs. 30-35, 

 female. 24, accessory genitalia ; 25, ventral view of inferior abdom- 

 inal appendage ; 26, anterior lamina ; 27, left superior abdominal ap- 

 pendage, externo-dorsal view ; 28, postocellary vertical ridge, dorsal 

 view; 29, occiput; 30, vulvar lamina, de Selys No. 4; 31, postocellary 

 vertical ridge, dorsal view, Salt Lake, St. Petersburg, Florida, 

 March 31, 1913, L. A. Williamson (this specimen in copulation with 

 male of figs. 24-29) ; 32, occiput, de Selys No. 3 ; 33, occiput, de 

 Selys No. 5 ; 34, occiput, de Selys No. 4 ; 35, occiput, same data as 

 for fig. 31. 



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