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; 11, 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; 20, 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 
tof ies 3h. 
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