MR. A. G. BUTLBE ON THE SPHINGLD^. 005 



Section Phrtxus', Hiibner (restricted). 



11. DiLOPHONOTA CAICUS. 



Sphinx caicus, Cramer, Pap. Exot. ii. p. 42, pi. 125. fig. F (1779). 



Phryxm caicus, Hiibner, Verz. bek. Schmett. p. 137. no. 1469 (1816). 

 Anceryx caicus, Walker, Lep. Het. viii. p. 328. no. 10 (1856). 

 Erinnyis caicus, Grote, Proc. Bnt. Soc. Phil. v. p. 72 (1865). 



c? , South America, Honduras (iff*//e;') ; cf 2 , Haiti (TweeeZee). 13. M. 



Genus 7. Oryba, Walker. 

 Onjba, Walker, Lep. Het. viii. p. 197. gen. 36 (1856). 



Ortba eobtjsta. 

 Oryba robusta, Walker, Lep. Het. viii. p. 197. no. 1 (1856). 

 Brazil. 



Genus 8. Macrosila, Walker (part.. 7iec Grote). 

 Macrosila (part.), Walker (nee Grote), Lep. Het. viii. p. 198. gen. 27 (1856). 



Differs from Biludia, Pseiidosphinx, and allies in its narrower wings, the (in the type) 

 more incurved external angle, more arched costa, and longer outer margin of primaries 

 and the somewhat longer head. 



1. Macrosila incisa. 



Macrosila incisa, Walker, Lep. Het. viii. p. 305. no. 11 (1856). 



S, Rio Janeiro (Stevens). '-iyps. B.M. 



The general coloration of the wings is that of Biludia ; but the primaries have an 

 oblique diffused brown bar across them from the costa to the outer margin ; the thorax 

 is grey, with a pitchy streak on each side ; the abdomen above dark grey, a black streak 

 on each side, and an ochreous spot on the four basal segments ; wings below light 

 chocolate-brown, whitish at base; body whitish testaceous. 



2. Macrosila hannibal. 



Sphinx hannibal, Cramer, Pap. Exot. iii. 1, p. 39, pi. 216. fig. A (1783). 

 Phlegethontius hannibal, Hiibner, Verz. bek. Schmett. p. 140. no. 1503 (1816). 



Brazil (Stevens). B.M. 



Cramer's figure gives an entirely false notion of the form of the wings, the primaries 

 being more elongated than in Sphinx kalmiw; they are not incurved above external 

 angle as in the type of the genus ; and the coloration is more like Sphinx lucetius of 

 Cramer. 



' Characterized by its slightly smaller head, coarser antennse, and the entire margin to the mngs; the style 

 of coloration is also not quito the same. 



