no. i. BOMBYCINE MOTHS OF NORTH AMERICA— PACKARD. 255 



alteraque multidentata (communi) pone medium albis nigro roseoque marginatis; striga tenui, 

 nigra, undata, subapicali, macula tripartita, nigra versus apicem connexa; posticis serie sub- 

 marginali macularum rosearum, extus linea undata, nigra e margine griseo separata. <? , ? . 



"Expans. alar, antic, maris, unc. 4. 



" Hab. in Mexico, Cuantla. E folliculo in mense Octobris invento imago prodiit Augusto 

 sequente. Communicavit D. Coffin. In Mus. Westwood. 



"This species is allied to Saturnia Tiesperus (Cramer, pi. 68, fig. A), but is smaller, and has 

 the dentated fascia of the fore wings extending in a straight line extirely across them; it is also 

 much more brightly colored. Both sexes have the fore wings emarginate along the outer 

 margin, those of the female being rather less so than those of the male. The general color of 

 the wings is tawny brown; the fore wings with the fore margin thickly clothed with gray scales 

 being white toward the base; the front of the thorax has a continuous white band; another 

 extends also across the hind part of the thorax, and is continued by a white bar along the wing 

 for about one-third of its length, where it is angulated, and extends nearly to the costa; it is 

 inwardly edged with bright rosy, and outwardly in part with black; the vitreous patch which 

 occupies the middle of the wing is subtriangular, having a narrow white margin succeeded by 

 a wider black one. This spot is followed by a multidentate white striga, edged with black on 

 the inside and with rosy red on the out, running nearly in a straight direction across the wing, 

 and extending also in a curved one across the hind wings to the anal margin. This striga is 

 followed in both wings by a rather wide space much powdered with gray atoms, except toward 

 the costa, which is more ashy colored; the dull luteous margin is traversed b} r a slender, waved, 

 black line, followed by a white band, and toward the tip of the fore wings is a black patch, 

 outwardly dentate, succeeded b} r two smaller black ones edged with tawny, and a short cur.ved 

 and dentated white line extends to the tip of the wing. 



"The hind wings are very similar to the fore ones, having near the base a slightly curved 

 white streak outwardly edged with black, followed by a nearly oval vitreous spot, edged with 

 white and black, slightly larger than the spot of the fore wings ; and the luteous margin of these 

 wings bears a slender wavy black line, preceded by a row of small rosy and black spots. 



"The wings on the under side are colored exactly as on the upper, except that the costa 

 of the hind wings is narrowly white. The antennae of the males are but moderately feathered; 

 they are about 30-jointed, each joint producing two branches of equal length on either side, 

 except that in the eight or nine terminal joints one of the pairs of branches is gradually obsolete, 

 being entirely wanting in the six last. The antennae of the female resemble those of the male, 

 but are rather less strongly feathered."] 



[Rothschild (Nov. Zool., 1907, p. 415) has described a subspecies, R. jorutla inca, from 

 Peru. He also considers the Venezuelan R. lebeaui Guerin to be a subspecies of jorulla. On the 

 other hand, the Brazilian R. prionia Roths., which greatly resembles jorulla, differs in the male 

 genitalia.] 



Life history of Rothschildia jorulla. 



(Attacus cinctus Tepper.) 



Larva. — Beginning, of stage II: It was hatched in New York from a few eggs laid by 

 examples bred from the cocoon and mated by Mr. Joutel, and sent me May 8, and described 

 May 9. Length 7 mm. Body unusually short and thick, and now much wider than the head, 

 which is of the usual shape (as in Telea and Pliilosamia) , smooth, with long scattering irregular 

 hairs; antennas white; it is black and yellowish- white, the sides black, with a black V on each 

 side of the yellow clypeus-postcrior; clypeus-anterior with a whitish transverse line. 



Body and legs dull livid brownish. The tubercles are very large and crowded together; 

 they are full, globular-conical, and a little higher than thick, and all pale straw-yellow. 



There are four dorsal prothoracic tubercles, but the two on each side are united at base 

 makbig a large double transverse tubercle higher than any of those behind, and all four con- 

 nected by a ridge; yet they are shorter than in stage I. 



All of the tubercles behind the prothoracic segment are of the same size and height, the 

 meso- and the metathoracic ones not differing from each other, nor are the abdominal ones 



