﻿NORTH AMERICAN SPHINGIDyE. 157 



Pupation. — According to Ahbot <£• Smith, it enters the pupa state August 14th, and appears as an imago 

 September 7th. Another became a pupa September 29th, and appeared July 18th following. 

 Food-plants. — Jussiaea erecta, (decurrens ?) 

 Geographical distribution. — S. America, Mexico, West Indies, Southern U. States. 





Measurements — a, Male. 







HEAD. 



THORAX. ABDOMEN. 



BOBY. 



AST. WING, 



Length. Breadth. 



Length. Breadth. Length. Breadth. 



Length. 



Length. 



3-00 4-00-2-50 



6-50 5-00 15-00 5-50 



23-00 



23-00 



This species approaches ViUs so nearly in its ornamentation that I am much 

 disposed to place it as a variety. But for the present, perhaps, it is better to represent 

 it as distinct. 



47. P. JussiEUiE. — Eumorpha elegans Jussieuse, Hubner Exot. Schmett. Band. I., Lep. II., Sph. III., 



Leg. II., Eumorpli. A., Eleg. a., Band: II. Dupo Jussieuse, Lep. II., Sph. III., Leg. III. Deileph. 



A., Pallid. I.; Verz. Schmett. 137, 1467. Sphinx fasciatus, Sulz. Hist. Ins. pi. 20, f. 1. Philampelus 



Jussieuse Walker, p. 177. 



Pale buff, tinged with reddish. Head and thorax with a dorsal olivaceous green line. Thorax with two 



broad olivaceous green stripes. Abdomen with two black spots at the base on the sides, and two dorsal 



olivaceous green stripes. Anterior wings olivaceous green, costa reddish brown, with a discal mark, a 



transverse streak near the base, with two connected bands along the middle and the veins pale buff; 



exterior margin reddish brown. Posterior wings pale green, rosy along the inner margin and exterior half 



of terminal border, with two black spots near the middle of inner margin, and a sub-terminal black band 



ending in short lines and a dusky patch at inner angle. 



Geographical distribution. — S. America, West Indies, Mexico. 

 Collection of Acad. Nat. Sciences, Philadelphia. 



PACHYLIA Walker. 



The body is large and thick. The head is large, free and prominent ; the front 

 smooth, long, broad and elliptical : the palpi ascend to its level ; the eyes are large 

 or very large, salient and hemispherical ; the tongue strong and thick, but when 

 unrolled extends only to about the third abdominal segment; the antennae are about 

 as long as the thorax, with a long hook, compressed laterally. The thorax is smooth, 

 immaculate, thick and cylindrical, well advanced in front of the base of anterior 

 wings, and tapering on the sides to the head. The abdomen is large, nearly cylin- 

 drical or oblanceolate, generally rather more than twice the length of the thorax. 

 The wings are about equal in length to that of the body, or somewhat longer, and 

 about twice and a half longer than broad across the inner angle ; the hind margin of 

 the anterior entire, almost obliquely convex, but slightly excavated near the tip and 

 above inner angle, or more decidedly excavated and rounded in the middle, with the 

 tip acuminated; the inner margin deeply concave above inner angle. The posterior 

 wings are suddenly curved above the tip, and the hind margin slightly denticulated, 



40 



