MR. A. G. BUTLER ON THE SPHINGIDZ. 521 
15. HEMARIS ALTERNATA. 
Sesia alternata, Butler, Ann. & Mag. Nat. Hist. ser. 4, vol. xiv. p. 366 (Nov. 1874). 
Hakodadi ( Whitely). Type, B.M. 
16. HEMARIS AXILLARIS. 
Sesia axillaris, Grote and Robinson, Trans. Am. Ent. Soe. ii. p. 180 (1868). 
Hemaris axillaris, Grote, Bull. Buff. Soc. Nat. Sci. p. 6, pl. 1. fig. 9 (1873). 
Sesia grotei, Butler, Ann. & Mag. Nat. Hist. ser. 4, vol. xiv. p. 365 (1874). 
Texas (Belfrage). B.M. 
17. HEMARIS MARGINALIS. 
3, Hemaris marginalis, Grote, Bull. Buff. Soc. Nat. Sci. p. 6, pl. 1. fig. 10 (18783). 
Michigan (Strecker). 
Section H#Morruaeta, Grote!. 
18. HEMARIS THYSBE. 
Sphine thysbe, Fabricius, Syst. Ent. p. 548 (1775). 
Sesia thysbe, Fabricius, Mant. Ins. i. p. 99 (1787). 
Hemorrhagia thysbe, Grote and Robinson, Proc. Ent. Soc. Phil. vol. v. p. 174 (1865). 
Sphinz pelasgus, Cramer, Pap. Exot. iii. p. 93, pl. 248. fig. B (1782). 
Sesia pelasgus, Harris, Cat. N.A. Sphing., Sill. Journ. xxxvi. p. 308 (1839). 
Sesia cimbiciformis, Stephens, Il. Brit. Ent. Haust. vol. i. p. 135 (1828). 
Massachusetts (Doubleday); United States (Milne). B.M. 
19. HEMARIS RUFICAUDIS. 
Sesia ruficaudis, Kirby, Faun. Bor.-Am. vol. iv. p. 303 (1837). 
Hemorrhagia 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 Robinson, who make the 
following statement (Proc. Ent. Soc. Phil. v. p. 175) :—*‘‘ Kirby’s description presents too 
many points of difference with H. gracilis to allow us to refer that species as intended, 
while Mr. Walker evidently describes our species as intended by Kirby.” Now although 
Walker included one example of H. gracilis with our examples of H. ruficaudis, 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 Hamorrhagia floridensis of Grote and Robinson. 
This may, perhaps, be a genus, the species being more densely scaled than in Hemaris, and haying conse- 
quently a somewhat different aspect ; on the whole, however, I prefer to regard it for the present as a section. 
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