16 . HETEROCERA. 
4. Pachylia resumens. 
Pachylia resumens, Walk. Cat. viii. p. 190*; Herrich-Schaffer, Samml. auss. Schmett. ii. f. 556. 
Hab. Honpuras!; Nicaragua, Chontales (Belt, mus. Oxf.); Panama, Chiriqui 
(Ribbé ; Arcé, mus. D.).—Antittes, San Domingo!; Ecuapor (mus. D.); Brazit, 
Riot. | 
This is the smallest species of the genus, and easily distinguished from the two 
preceding species by the primaries wanting the light spot at the apex. 
Subfam. AMBULICINA. 
AMBULYX. 
Ambulyx, Walker, Cat. viii. p. 120 (1856). _ 
Twenty-three species are placed in this genus, five of which are described from 
Tropical America, three only as yet being found in Central America. 
1. Ambulyx strigilis. 
Sphinx strigilis, Linn. Mant. i. p. 588; Cr. Pap. Ex. i. t. 106. f. B’. 
Ambulyx strigilis, Walk. Cat. viii. p. 121°. 
Hab. Panama (mus. Staudinger).—AntILLES, San Domingo? (mus. D.); Braz, Rio 
Janeiro 7. 
2. Ambulyx gannascus, 
Sphing gannascus, Stoll, Pap. Ex. t. 35. f. 3, 3B’. 
Ambulyx gannascus, Butl. Trans. Z. 8. ix. p. 581°. 
Hab. Guatema.a, San Isidro (Champion) ; Nicaragua, Chontales (Belt, mus. Oxf.) ; 
Panama, Chiriqui (Arcé, mus. D.).—ANTILLES, Jamaica?. 
The locality Cape of Good Hope given by Stoll! is, without doubt, a mistake. The 
specimens before me agree well with his figure. I have not seen an example from 
any locality south of Panama. 
8. Ambulyx rostralis. 
Ambulyx rostralis, Boisd. Lép. Guat.’ p. 68; Feld. Reise d. Nov. Zool. ii., Lep. Th. iv. t. 77. f. 62; 
Butl. Trans. Z. 8. ix. p. 581°. 
Hab. Nicaragua!.—Co.tomsBia!; Ecvapor (mus. D.); Amazons?®; Braziu, 
I have, through the kindness of Mons. C. Oberthiir, examined the type of this species. 
The specimens from Ecuador agree with it in all respects. Boisduval’s is the only 
authority for its occurrence in Central America. 
