NORTH AMERICAN NEUROPTERA. 88 



JVoteii on some North Aiiieriean ODONATA with descrip- 

 tions of three new species. 



BY PHILIP P. CALVERT. 



(lu the following paper I have followed the generic divisions of 

 Dr. Hagen's "Synopsis of the Odonata of N. America," 1875, in 

 Proc. Bost. Soc. Nat. Hist, xviii, pp. 20-96.) 



Epitheca Wnlshii Scudder. 



In 1875, Dr. Hagen recorded this species as only from the White 

 Mountains of New Hampshire. Miss Mattie Wadsworth t(jok a 

 single male of this species at Manchester, Kennebec Co., Maine, on 

 July 16, 1888. Thanks to the kindness of Miss Wadsworth, I have 

 compared this male with Mr. Scudder's original description (Proc. 

 Bost. Soc. Nat. Hist, x, p. 217) ; the only differences which I noted 

 were that this male has no yellowish spot on the side at base of the 

 fourth abdominal segment, and has a yellow spot on each side of the 

 sixth and seventh segments at apex. 



Mr. William Sheraton took a female, which I believe belongs to 

 this species, at Pictou, Nova Scotia, July 23, 1889. The female 

 Walshli has not hitherto been described. This female differs from 

 the male as follows : 



9- — Nasus more yellowish. Anterior femora entirely brown, except at tlie 

 apex. Abdomen with a yellow spot on each side of segments 4 and 8 at base, 

 but no yellow spot on each side of 6 and 7 at apex ; dorsum of 10 entirely black. 

 Abdomen shaped as in the % , but a little wider at the base, not so narrow at the 

 third segment, and the apex of fifth is not quite as wide as the first segment. 

 Appendages twice as long as the last two segments, simple, straight, subcylin- 

 drical, narrower at the base, clothed with short hairs, apex acute. Vulvar lamina 

 erect, excavated within, apex rounded, entire. 



Total length 48 mm. Abdomen (incl. app.) 36 mm. Appendages 4 mm. An- 

 terior wing 33 mm. Posterior 32 mm. Pterostigma 3 mm. ; 8 antecubitals on 

 the anteriors, ?> on posteriors. Postcubitals, auteriors E 6, L 5, posteriors 6 ; 3 

 discoidal areolets, then 2 rows on anteriors; 2 rows, then 3 rows, on posteriors. 

 Discoidal triangles of all four wings crossed by one vein. 



The 9 Wakhii is much like the $ forcipata Scud., specimens of 

 which I have not seen. Baron de Selys (Syn. Cordul. 1871) de- 

 scribes the 9 forcipata as having the " abdomen ei)ais a la base, non 



etrangle, ecaille vulvaire . . parais.sant un pen emarginee 



au milieu," Avhich, in addition to the color differences, apparently 

 separate it from 9 Walshli In his Second Addit. Syn. Cordul., 

 1878, Baron de Selys places Walshli in that group of his subgenu.-< 

 Somatoehlora characterized by the females having the " ecaille vul- 



TRANS. AM. ENT. SOC. XVII. (5) .lANUARY, 1890. 



