ENTOMOLOGICAL NEWS. 197 



stripe on the thorax divided. Three specimens showed no 

 dorsal interruption of the basal ring of 2, and the black of the 

 dorsum was a distal spot with a tail. In another specimen the 

 interruption was a hair-line of black. The black mark on the 

 dorsum of 8 of the female which separates the blue spot on 

 either side is shaped like a wine glass. The blue spots on 8 

 are crossed by black veins. So far as we know this species has 

 not been taken before in New England. It flies close to the 

 water and is hard to catch. We dipped the net over the rock 

 on which the specimens rested. 



56. Enallagma Calverti Morse .$ . 



The $ of this species was described by Prof. Morse in 

 Psyche, March, 1895, p. 208. As no mention is made of the 9 

 we presume that it has not been described. * Below we give a 

 description drawn up from an examination of many specimens. 

 There are two color forms of the female of this species : (#) 

 in which the color is bright blue on the abdomen, like that in 

 the male ; (b) in which the markings are of the same pat- 

 tern and location as in the other, but so pale that they do not 

 show well, and the abdomen appears, when casually examined, 

 as bronzy throughout. The bronzy form may be teneral, 

 although both forms were in copula at the same date and at 

 the same pond with undoubted E. calvcrti males. 



Total length 29-34 mm. Hind wing 18-21 mm. The head and thorax 

 marked like those of the male, only paler. Abdomen bronzy-black and 

 blue. The first segment all blue, excepting an anterior transverse dor- 

 sal stripe, back of which on the median line is a small dot, near the pos- 

 terior suture on the dorsum a small T-shaped spot, the short stem 

 reaching the suture. Second segment a dorsal dark band running the 

 whole length, narrowing in the middle, and posteriorly widening to an 

 orbicular spot which joins the suture of the third segment. Viewed from 

 above, segments 3 to 8 show twin blue spots anteriorly, which slope down 

 the sides and involve the lower half. Those on the third reach beyond 

 the middle, while those on 4-7 involve only one-sixth. On segment 8 the 

 blue reaches more than half the length and the separating dark color 

 much wider. The blue on the sides of 8 separated into two spots by a 

 narrow projection of the dark color. Dorsum of 9 dark. Dorsum of 10 

 with narrow portion of blue of the sides showing each side. 



* [A brief description of the female was published by Mr. E. B. 

 Williamson in the NKVVS for May, 1900, page 455.] 



