Feb., '09] ENTOMOLOGICAL NEWS. 77 



Some Corrections in Somatochlora (Odonata 



Dragonflies). 



By E. B. WILLIAMSON. 



In the ENTOMOLOGICAL NEWS, April, 1906, pp. 136-138, 

 Plates V. and VI., I published some notes and figures of 

 species of Somatochlora. Since that time M. Martin's Cordu- 

 lines, Coll. Zool. du Baron Edm. de Selys Longchamps, has 

 been published ; and this and correspondence with Dr. Calvert 

 and the examination of other material show some serious er- 

 rors in my earlier paper. M. Martin's figures of S. hudsonica 

 are of a species entirely unknown to me, and all that is said 

 in my paper under this name refers to septentrionalis. In fact, 

 I so named Dr. Atkinson's Newfoundland specimens, and they 

 still bear this label, the change in my MS. being made when I 

 discovered in the Harvey collection a male specimen of a dif- 

 ferent species labelled septentrionalis. It now appears that the 

 Harvey specimen should be referred to franklini. This is the 

 specimen listed under No. 72, p. 9, in Professor Harvey's 

 Catalogue and Bibliography of the Odonata (Dragonflies) of 

 Maine, University of Maine, Studies No. 4, published after 

 Professor Harvey's death. Professor Harvey's first reference 

 to the species is in the ENT. NEWS., November, 1901, p. 275. 

 In the Harvey material in my collection is a teneral female 

 of the same species, taken at Orono, Maine, June 2, 1899, Bar- 

 tie Harvey. This specimen has the vulvar lamina and wings 

 as described by de Selys and Hagen for franklini. Hence in 

 Professor Harvey's papers and in my paper all notes and fig- 

 ures under septentrionalis refer to franklini. The necessity 

 for these corrections have been known to Dr. Calvert and my- 

 self for some time, and my attention was first called to them in 

 a letter from Dr. Calvert. M. Martin, in his paper mentioned 

 above, on p. 25, under S. franklini, quoted de Selys' description, 

 in Syn. des Cordulines, of the male appendages of S. septen- 

 trionalis. This description, so quoted, if my present determin- 

 ations are correct, is gravely misleading. In fact neither de 

 Selys or Hagen ever described the male of franklini, and there 

 is no evidence that either knew it. Hagen, in his Syn. Od. 



