610 MR. A. G. BUTLER ON THE SPHINGID#. 
Genus 10. PsevpospHinx, Burmeister. 
Pseudosphinz, Burmeister, Abhandl. naturf. Gesellsch. Halle, p. 65 (1855). 
1, PSEUDOSPHINX TETRIO. 
Sphinx tetrio, Linneus, Mantissa, i. p. 538; Fabricius, Syst. Ent. p. 540. no. 14 (1775). 
Pseudosphinx tetrio, Burmeister, Sp. Braz. in Abhandl. naturf. Gesellsch. Halle, 1855, p. 65. 
9, Sphinx hasdrubal, Cramer, Pap. Exot. ii. p. 90, pl. 246. fig. F (1782). 
Hyloicus hasdrubal, Hiibner, Verz. bek. Schmett. p. 139. no. 1488 (1816). 
Macrosila hasdrubal, Walker, Lep. Het. viii. p. 202. no. 6 (1856). 
Sphinx asdrubal (sic), Poey, Cent. Lep. Cuba (1832). 
3, Honduras (Miller); 2, Haiti (Cuming, Tweedie); Brazil (Argent). B.M. 
2. PsrUDOSPHINX OBSCURA, N. sp. 
Allied to P. tetrio. All the wings darker, the lines more prominent, primaries 
clouded with blackish brown; bands on abdomen better-defined. Expanse of wings 
5 inches 4 lines to 6 inches 5 lines. 
3, Honduras (J/iller); 2, New Granada, ¢, Brazil (Argent, Stevens). B.M. 
I was at first inclined to consider P. obscura a dark form of P. tetrio; but Herr 
Flohr, who knows P. tetrio in all its stages, informs me that he has seen no such variety, 
and he is satisfied that it is distinct. The male is very unlike P. tetrio, owing to the 
broad dark nebulous band (interrupted at end of cell by a greyish white patch) which 
crosses the middle of the wing, and by the dark triangular apical area; these characters, 
however, are not so pronounced in the female. The Brazilian males are deepest in 
colour, and more elegantly formed than our male from Honduras. 
3. PseuDOSPHINX ? LUCTIFERA. 
Macrosila luctifera, Walker, Lep. Het. Suppl. i. p. 85 (1864). 
New Guinea, Mysol, Ceram. 
I have not seen the type of this species (formerly in Mr. Saunders’s collection) ; there- 
fore I am unable to be certain of its genus. 
4, PsuUDOSPHINX MENEPHRON. 
Sphina menephron, Cramer, Pap. Exot. iii. p. 164, pl. 285. fig. A (1782). 
Macrosila menephron, Walker, Lep. Het. viii. p. 210. no. 18 (1856). 
Amboina. 
5. PSEUDOSPHINX NYCTIPHANES. 
Macrosila nyctiphanes, Walker, Lep. Het. viii. p. 209. no. 16 (1856). 
Silhet (Doubleday, Sowerby, Stainsforth, Dale). Type, B.M. 
