July, *08] ENTOMOLOGICAL NEWS. 307 



Aeshna jalapensis n. sp. 



Abdomen exclusive of appendages, $ 44 mm., $ 43.5 mm., h. w. 

 $ 45 mm., $ 47 mm. 



Dorsal thoracic stripes about 3 mm. long, less than i mm. wide and 

 narrowed at either end. First lateral stripe less than i mm. wide, of 

 uniform width throughout and of definite pattern, not diffuse. Second 

 lateral stripe similar to first, but slightly wider above on the upper 

 (anterior) side, the lower (posterior) edge nearly straight. In the 

 female the lateral stripes are slightly wider than in the male. Ab- 

 domen apparently variable, but blue areas greatly reduced. In no case 

 do the pale areas B seem to be joined with pale areas C as on seg- 

 ments 4-6 in mutata. In four males collected by Dr. Calvert there is no 

 trace of the apical pale spot, D, on segments 4-10. In a male collected 

 by Mr. Godman [and in i $ collected by me at Jalapa, but not seen 

 by Mr. Williamson P. P. C.] these spots are present but obscure 

 and reduced. In Dr. Calvert's four specimens segments 8-10 are entirely 

 black, excepting pale narrow apical articulations on 8 and 9. 



Through the kindness of Dr. Calvert I have studied four 

 males collected by himself and one male and one female col- 

 lected by Mr. F. D. Godman, all at Jalapa, Mexico. The types 

 of jalapensis are one male in Dr. Calvert's collection, taken by 

 himself, and the female in Mr. Godman's collection. The ele- 

 vation of Jalapa is 4315 feet. Dr. Calvert writes that his speci- 

 mens were taken along a small river which flows through the 

 town, above a dam near a mill, where the current was slow, 

 and between 10 A. M. and noon of a sunny September day, 

 1906. It is not impossible that multicolor may be found in 

 the vicinity of Jalapa, as I have found the two species which 

 have been associated under the name constricta at Bluffton. in 

 one case flying within 100 feet of each other, but each plainly 

 preferring its own habitat. 



In the preparation of this paper I am under obligations to 

 Dr. Calvert w r ho has kindly loaned me several specimens of 

 multicolor, from a wide range of localities, and the five males 

 and one female of jalapensis which I have seen. To him I am 

 also indebted for invaluable advice and criticism. Professor 

 Walker kindly compared material with specimens at the M. C. 

 Z. and loaned me two males and one female of mutata which 

 Professor Needham had sent him for study. Mr. Henshaw 

 furnished me with some details regarding Hagen's type of 



