﻿NORTH AMERICAN SPHINGIDvE. 151 



sub-terminal row of dark brown dots on the nervules ; discal spot black. Hind wings black with a central 

 median dull greenish band. 



Collection of the Acad. Nat. Sciences, Philadelphia. 



Geographical distribution. ? 



§§ Fore wings very acute and somewhat hooked. 



34. C. Falco.— Walker, p. 132. 



Fawn colored, whitish testaceous beneath. Head and thorax with a whitish stripe along each side. 

 Disk of the thorax cinereous brown. Abdomen brown, with a fawn-colored stripe along each side, and a 

 double dorsal whitish line. Fore wings with blackish speckles, with a blackish discal dot and with 

 several blackish, slightly oblique, posterior lines, slightly hooked and more acute at the tips than in the other 

 species of this genus. Hind wings with two blackish stripes ; exterior border slightly emarginate. Length 

 of the body 15 — 19 lines ; of the wings 30 — 40 lines. 



Geographical distribution. — Mexico. 



§ Hind border of anterior wings nearly straight. 



35. C. Procne. 



Head and thorax dull brown, (if not faded,) with a broad whitish stripe on the sides, extended to the 

 lower edge of tegulse. Abdomen brownish testaceous, with faint dark brown dorsal marks in atoms. 

 Anterior wings rather pale brownish, punctated with dark atoms and with obscure dark brown lines 

 extending from the base to the tip ; discal spot dark brown and small. Posterior wings uniform blackish 

 brown. Under surface of the wings brownish, somewhat tinged with rufous, and with two rows of brown 

 spots in the middle of the posterior. 



Collection of the Acad. Nat. Sciences, Philadelphia. 



Geographical distribution. — California. 



§§ Fore wings very acute and somewhat hooked. 



36. C. DRANCUS. — Sphinx Drancus Cramer II. 56, pi. 132, f. F. Xylophanes Drancus Hubner, Verz. 



Schmett, 136, 1460. Chserocampa Drancus Walker, p. 133. 



Blackish brown ; sides of head and thorax with a white line, and a white dorsal line extending from 

 the head to tip of the abdomen ; tegulse edged above with reddish brown, beneath with white. The base 

 of abdomen with two reddish brown bands. Anterior wings blackish brown, discal spot black ; several 

 lines extending from the inner margin to the tip, three of which in the middle of the wing arise from a 

 blackish patch on the inner margin placed on a fawn-colored ground and a single black, subterminal line 

 placed between two dark brown lines. Posterior wings uniform dark brown. (Cramer' s figure.) 



Geographical distribution. — West Indies, 



§§ Anterior wings acute and somewhat hooked. 



The following species resembles in some respects Mr. Walker's Crotonis, but I think 

 It is not the same. 



37. C. NlTIDULA. 



Head and thorax with a rufo-whitish line on each side. Head and anterior portion of tegulse dark 

 brown, tinged with greenish, with the disc brown. Abdomen brown, paler on the sides, with a double 

 row of dorsal dark brown dots and a black patch on the sides at the base. Anterior wings dull greenish 

 brown, with a large black spot on the inner margin near the base ; discal spot small and black ; a single 

 brownish line from the inner margin to the tip ; with two rows of indistinct brownish dots on the nervules 



