176 



from the extremities of this line to the middle point of the posterior edge of the 

 occiput. This species will very probably be found to inhabit Indiana. 



5. Gomphus pallidus Rambur. St. Joe River, June 8, 1900, one female. 

 R. J. Weith, 



6. Gomphus spicatus Hagen. Elkhart, May 20, 1900. R. J. Weith. In 

 plate VI, " Dragonflies of Indiana," figs. 18 and 19 will not serve to distingui>h 

 the males of Gomphus spicatus and G. descriptus. Seen from above the superior 

 appendages of sj3tca<«8 have a distinct median external tooth; descriptus has the 

 appendages angulated beyond the middle, but there is no tooth. , 



7. Gomphus sp. Page 294, "Dragonflies of Indiana," is a new species soc n 

 to be described by Mr. Hine. 



8. With a knowledge of the nymph of Tachopteryx thoreyi another arrange- 

 ment of the genera of the Gomphinae than that employed in the " Dragonflies of 

 Indiana" becomes desirable. The arrangement of genera of the Gomphinae as 

 worked out by Selys in his " Synopsis des Gomphines" and culminating with his 

 final " Xote sur la classification" in the fourth addition to the Synopsis, may be 

 employed'here for the genera taken in Indiana. The genera would then stand in 

 this order: Ophiogomphus, Dromoyomphus, Gomphus, Progomphus, Hagenius, 2'aehop- 

 teryx, Cordulegaster. 



9. The genus Nasiaeschna has recently been established by Selys (Termesze- 

 trajzi fuzetek, XXIII, 1900, p. 93) for the species Aeschna pentacantha Rambur. 

 In the key to genera in "The Dragonflies of Indiana" pentacantha will run out to 

 the genus Epiaeschna. The genus Nasiaeschna is distinguished from Epiaesehna 

 by the supplementary sector between the subnodal and median sectors being 

 separated from the subnodal by one row of cells (two rows in Epiaeschna), by hav- 

 ing the face excavated, by the absence of a dorsal spine on abdominal segment 10 

 in the male, and by the superior appendages of the male being shorter and hts 

 dilated. 



10. Aeschna multicolor Hagen. Calvert (Odonataof Baja California, p. 509) 

 has the following paragraph relating to the range of this species. ^^Distribution, 

 Mexico (Cordova, Baja California), California, Texas, Dakota, Colorado, Yellow- 

 stone, British Columbia (Victoria)." In Bull. Geol. Surv. Terr. 1875, p. 591, 

 Hagen says of it, "A decidedly western species." To find it in Indiana is a sur- 

 prise. The following description is found in the Syn. Neur. N. A., 1861, p. 121. 

 " Fuscous, spotted with blue, head blue {(^) or luteous (?), front with a T spot, 

 each side terminated with yellow, and a band before the eyes, black ; thorax fus- 

 cous, dorsum each side with a stripe (interrupted or absent in the female), sidet-, 

 each side with two oblique ones blue {(^) or yellow (?); feet black, femora 



