1923 ] 
Williamsonia lintneri {Hagen) 
223 
allowed it to suggest at least four individual males and four 
individual females. This data as we may infer from Hagen’s 
letter was in manuscript for some time and he doubtless tran- 
scribed the labels just as they were and later forgot to call 
attention to the erroneous construction likely to be placed upon 
the numeral just before the sex sign or the possibility of any such 
thing may have escaped his attention.” As the label reads V 27 
4cf is it not likely that it meant May 27, 1874, a date that 
would fit in well with the other facts? In 1895 (Journ. N. Y. Ent. 
Soc. 3:46) Dr. P. P. Calvert placed the species in the genus 
Somatochlora, and in 1907 (Cat. Coll. Selys 17 :36) Martin referred 
it to Dorocordulia, and figures (f42) the male abdominal append- 
ages from a photograph sent him of the type by Dr. E. P. Felt. 
In 1913 (Bull. Brooklyn Ent. Soc. 8:93-96) Mr. Wm. T. Davis 
proposed for the species a new genus Williamsonia, and figured 
the wings of a female found in the collection of the American 
Museum of Natural History, New York taken by John A. 
Grossback on May 4? at Paterson, N. J. 
The two females from Manitoba are not Williamsonia 
lintneri (Hagen), but represent a different species, Williamsonia 
fletcheri Will. (Can. Ent. 55:96. 1923). The two specimens 
collected by Mr. C. H. Young at Aler Bleue, near Ottawa, 
Canada (48th Ann. Report Ent. Soc. Ont. 25:1915), and spe- 
cimens collected last May at the same location are also William- 
sonia fletcheri though somewhat intermediate and less distinct 
from W. lintneri than the Manitoba specimens which would 
have supplied better and more characteristic type material. In 
my opinion it would have been more appropriate to revive the 
nomen nudum vacua already applied to the species rather than 
propose a new name. The discovery of the two species explains 
the supposed two curious distributional ‘Jakes” that have 
heretofore been attributed to Williamsonia lintneri, the distri- 
bution of which is now made clear. 
2839. cf . Center, N. Y. May 27, ’?4, “a sandy pine woods 
region” (J. A. Lintner). Coll. State Mus., Albany, N. Y., Bull. 
Acad. Belg. (2) vol. 45, p. 187 (1878). 
