MR. A. G. BUTLER ON THE SPHINGIDA. 581 
12. AmBuLyx? CONSTRIGILIS. 
Ambulyx constrigilis, Walker, Characters of Lepidoptera Heterocera from Congo, p. 4. no. 2 (1869). 
Congo. 
Judging from the description alone, I rather doubt this being a true Ambulyx. 
13. AMBULYX CANESCENS. 
Basiana? canescens, Walker, Lep. Het., Suppl. i. p. 38 (1864). 
Cambodia. 
Unquestionably an Ambulyx, apparently allied to A. liturata, but without the dark 
spots at base of primaries. 
14. AMBULYX TIGRINA. 
Ambulyx tigrina, Felder, Reise der Nov., Lep. iv. tab. Ixxvii. fig. 4 (Nov. 1874). 
—! 
Allied to A. gannascus, but with the hind wings golden yellow. It comes in well 
between the A. strigilis and A. gannascus groups. 
15. AMBULYX GANNASCUS. 
Sphinx gannascus, Stoll, Pap. Exot. p. 157. no. 3, pl. 35. figs. 3, 36 (1791). 
Ambulyx gannascus, Burmeister, Sph. Bras., Abhandl. naturf. Gesellsch. Halle, p. 72 (1855). 
Amblypterus ganascus (sic), Hiibner, Verz. bek. Schmett. p. 133. no. 1429 (1816). 
Ambulyx ganascus (sic), Walker, Lep. Het. viii. p. 121. no. 2 (1856). 
Jamaica ((osse). B.M. 
16. AMBULYX ROSTRALIS. 
Ambulyzx rostralis, Boisduval, Lép. Guat. p. 68 (1873) ; Felder, Reise der Novy., Lep. iv. tab. bxxvii. 
fig. 6 (Nov. 1874). 
Amazons (Bates); Brazil (Stevens), B.M. 
According to Boisduval, from Nicaragua and New Granada. 
17. AMBULYX MARGINATA. 
Ambulyx marginata, Butler, P. Z.S. 1875, p. 10. 
Rio Janeiro (Stevens). Type. B.M. 
18. AMBULYX EURYSTHENES. 
Ambulyx eurysthenes, Felder, Reise der Nov., Lep. iv. tab. Ixxvii. fig. 5 (Nov. 1874). 
p 
Allied to the preceding species. 
