﻿NORTH AMERICAN SPIIINGIDiE. 145 



The following is a description of a larva, found on the Oxybaphus nyctageneits. 

 This, I think, can scarcely be the food-plant of the insect in the larval state, since it 

 is an exotic. The larva was full grown when found, and died in the pupa. 



24. D. Oxybaphi. 



Head brown, mixed with greenish and dotted with paler dots. Body blackish green, with a narrow, 

 vascular, yellowish green line, and a row of subdorsal round spots of the same hue on the anterior portion 

 of each segment, the posterior half of each being marked on the wrinkles with transverse bands of numer- 

 ous greenish yellow dots, those aligned with the subdorsal spots being somewhat more developed than the 

 remainder. These bands of dots extend nearly to the dorsum, but are obsolete on the anterior portion of 

 each ring, giving the body the appearance of being obliquely and broadly banded with the general hue. 

 A substigmatal, interrupted, greenish yellow line, having a reddish tinge beneath the stigmatae, and 

 bordered above and below with black lines. Horn pale brown, and the cervical plate of the same hue 

 mixed with greenish; plates of the shield and prolegs pale brown. Stigmatae reddish orange; prolegs and 

 feet pale brown. Ventral surface yellowish green, marked with black lines. Length from 3 to 3 J inches. 



This larva was brought to me on October 9th, 1858, and began to prepare for 

 pupation the same day. 



PERGESA Walker. 



" Body moderately stout. Proboscis long. Palpi as usual. Antennas slender, 

 rather longer than the thorax. Abdomen oblanceolate, more than twice the length 

 of the thorax. Legs long, slender ; hind tibiae with four long spurs. Wings rather 

 long, moderately broad, very slightly denticulated along the exterior border. Fore 

 wings hardly convex in front, acuminated; exterior border rather oblique, very 

 slightly undulating, its fore part very slightly concave. Hind wings rounded at the 

 tips." 



In the European Porcellus the head is free, short, obtuse and broad. The body 

 short and stout. The palpi project beyond the clypeus ; the eyes are quite small but 

 salient ; the tongue scarcely as long as the body ; the antennae rather clavato- 

 prismatic, with a short hook and seta. The thorax is short and obtuse in front. 

 The length of the anterior wings about equal to that of the body, and are a little more 

 than twice longer than broad across the inner angle. The hind margin of the posterior 

 wings is slightly wavy. The individuals were formerly part of the genus Chaerocampa. 



Larva. — Smooth, anterior segments retractile, with ocellated spots on the sides of 

 the fifth and sixth, and without a caudal horn. 



i i 



25. P. Thorates.— Sphinx Thorates, Hubner Ex. Schmctt, f. 525, 526. P. Thorates Walker, p. 151. 



Green, testaceous beneath. Head and thorax with a white line on each side. Thorax and abdomen 

 somewhat golden-hued on the sides. Abdomen rufo-fawn color, with green along the dorsum toward the 

 base, and a row of yellow dorsal dots. Anterior wings with interrupted whitish bands curving from 

 inner margin to costa, and tinged with rufescent ; with brown lines at base of the nervules, and a greenish 



