ME. A. G. BUTLER ON THE SPHJNGID^. 521 



15. Hemaeis alteenata. 



Sesia alternata, Butler, Ann. & Mag. Nat. Hist. ser. 4, vol. xiv. p. 366 (Nov. 1874). 



Hakodadi {Whitely). Type, B.M. 



16. Hemaeis axillaeis. 



Sesia axillaris, Grote and Robinson, Trans. Am. Ent. Soc. ii. p. 180 (1868). 

 Hemaris axillaris, Grote, Bull. Buff. Soc. Nat. Sci. p. 6, pi. 1. fig. 9 (1873). 

 Sesia grotei, Butler, Ann. & Mag. Nat. Hist. ser. 4, vol. xiv. p. 365 (1874). 



Texas {Belfrage). B.M. 



17. Hemaeis maeginalis. 



S , Hemaris marginalis, Grote, Bull. Buflf. Soc. Nat. Sci. p. 6, pi. 1. fig. 10 (1873). 

 Michigan (Strecker). 



Section H^moeehaqia, Grotei 



18. Hemaeis thtsbe. 



Sphinx thy she, Fabricius, Syst. Ent. p. 548 (1775). 



Sesia thysbe, Fabricius, Mant. Ins. i. p. 99 (1787). 



Hamorrhagia thysbe, Grote and Robinson, Proc. Ent. Soc. Phil. vol. v. p. 174 (1865). 



Sphinx pelasgus, Cramer, Pap. Exot. iii. p. 93, pi. 248. fig. B (1782). 



Sesia pelasgus, Harris, Cat. N.A. Sphing., SiU. Journ. xxxvi. p. 308 (1839). 



Sesia cimbiciformis, Stephens, 111. Brit. Ent. Haust. vol. i. p. 135 (1828) . 



Massachusetts {BouMeday) ; United States [Milne). B.M. 



19. Hemaeis euficaudis. 



Sesia ruficaudis, Kirby, Faun. Bor.-Am. vol. iv. p. 303 (1837). 



Hetmorrhagia ruficaudis, Grote and Robinson, Proc. Ent. Soc. Phil. vol. v. p. 175 (1865). 



Canada West {Bush) ; United States. B.M. 



This species has been much discussed by Messrs. Grote and Eobinson, who make the 

 following statement (Proc. Ent. Soc. Phil. v. p. 175) : — " Kirby's description presents too 

 many points of difference with R. gracilis to allow us to refer that species as intended, 

 while Mr. Walker evidently describes our species as intended by Kirby." Now althougli 

 Walker included one example oiH. gracilis with our examples of H. rvfcaudis, it is im- 

 possible to say that he " evidently describes " that specimen. I believe myself that the 

 Walkerian type (registered "United States") is referable to the present species.. It 

 might be considered the American representative of H. fuciformis ; but it is in some 

 respects more nearly allied to Hcemorrhagia floridensis of Grote and Eobinson. 



This may, perhaps, be a genus, the species being more densely scaled than in Hemaris, and having conse- 

 quently a somewhat different aspect ; on the whole, however, I prefer to regard it for the present as a section. 



4a 2 



