1874.] 361 [Hagen. 



29. Tramea Carolina. Male, female, No. 50, LeConte. 



I have seen a typical specimen sent by Abbot to Mr. Escher 

 Zollikofer. The northern limit for this species is New York. 



30. Celithemis Eponina. No. 27. Brit. Mus., August 7. 

 Rare. Male, No. 42, LeConte. 



I have seen a typical specimen sent by Abbot to Mr. Escher 

 Zollikofer. Massachusetts and the lakes are the northern limit for 

 this species. 



31. Plathemis trimaculata. Female with brown, and male 

 with pruinose abdomen. No. 79, No. 80, female No. 78. Brit. 

 Mus., July 18. Common. 



I saw typical specimens of all different forms communicated by 

 Abbot to Mr. Escher Zollikofer. 



32. Libellula semifasciata. Male, No. 77. April 2, June 

 29. Not very common. Brit. Mus. No. 41, male, female, LeConte. 



I possess a female type from Abbot. 



33. Libellula pulchella. Male, No. 43, LeConte; No. 3, 

 male with pruinose abdomen. Brit. Mus., Sept. 8. It is the rarest 

 of all the Libellulse. 



The last statement is somewhat remarkable as indicating the south- 

 ern limit for this widely distributed species. I possess specimens 

 from Frederic Co., and Baltimore (Uhler), Md., from Pennsylvania' 

 New Jersey, New York, Massachusetts, New Hampshire, Maine; from 

 the Western States I have specimens from Chicago and Rock Island, 

 111., from Dallas and Ware, Texas; from Ogden, Utah, and Mr. Uhler 

 has stated the occurrence in Mississippi. Only the southeastern part 

 of the Western States is not represented in the distribution of this 

 species. 



34. Libellula deplanata. 



I possess a specimen from Abbot; see Proc. Bost. Soc. Nat. Hist., 

 xv, 265. 



35. Libellula auripennis. Male, No. 16. Brit. Mus., April 

 20. Common. Male, female, No. 45, LeConte. 



I possess a type from Abbot. 



36. Libellula Lydia. Male, No. 5; female, No. 7. Brit. 

 Mus., April 20. Rare. 



I possess a male and female from Abbot. 



37. Libellula Axillena. Male, female, No. 46; male, adult, 

 No. 47, LeConte. 



I have strong doubts about the difference of L. Lydia and L. Axil- 



