1898.] ENTOMOLOGICAL NEWS. 85 



CONTRIBUTIONS TO THE ODONATA OF MAINE.— III. 



By F. L. Harvey, Orono, Maine. 



(Continued from p. 64, vol. ix.) 



Remarks. — We have never seen the types of G. ncevius, nor of 

 G. albistylus. The single $ taken in 1890, and the three taken 

 this season, came from the same locality, and have been referred 

 to G. ncevius Hagen by Mr. Calvert and myself. The males 

 taken this season certainly belong to the females taken, as they 

 were captured the same day at the same locality, and one in 

 copula. Both the males and females are variable in size, depth 

 of color and markings. We cannot escape the conviction that 

 G. ncevius and G. albistylus belong to the same variable species. 

 Mr. Calvert, who shares this opinion, says: " I have gone over 

 your specimens again and compared them with the descriptions 

 and with the data of variability mentioned in your letter. I now 

 incline strongly to the opinion you suggest, viz. , that G. ncevius 

 and albistylus are specifically identical. ' ' 



Selys says of G. ncevius : " Tres semblable a Y albistylus mais 

 beaucoup plus petit." As we have specimens that nearly agree 

 in measurement with those mentioned and find the size quite 

 variable in the males, the distinction of size would seem a trivial 

 one. Again, G. albistylus was described from a single 9 from 

 Maine and ncevius from a few females from Pennsylvania. The 

 material was entirely inadequate to show variability. For the 

 present we leave the species distinct, as our females agree more 

 nearly with the description of G. ncevius, but if the future shows 

 that these forms should be merged then G. ncevius Hagen would 

 have to be dropped and the species will be known as G. albistylus 

 Hagen, as this name has priority. Should the arrangement of 

 Needham be adopted then the form would be Gomphus {Lanthus 

 Need ham) albistylus Hagen. 



63. Gomphus spicatus Selys. 



Taken July, 1896, in a pasture near Orono; also June 26, 1897, 

 at S. Lagrange over a brook (Harvey). Both specimens were 

 females. One specimen had the outer triangle of both of the 

 hind wings crossed by a single vein. 



22. G. exilis Selys. 



Common in wood-roads at S. Lagrange, June 26, 1897 (Har- 

 vey). 



