200 Natural History Bulletin. 



minutely roughened. Meso- and metathorax subequal, a little 

 shorter than prothorax, also with impressed median line and 

 scutes, the latter somewhat elliptical in form and depressed 

 at centers; the vestiture is the same as that of the prothorax 

 except that the scales are more numerous over that part of 

 the segment not covered by the scute. Each of the thoracic 

 segments bears a large lateral appendage which is covered 

 with long scales (fig. 2''). 



Abdominal segments 1-8, each with a central raised spot, 

 surrounded by a channel, and two pairs of lateral appendages 

 one dorsal and one ventral. The ninth segment has but one 

 pair. These appendages are clothed, like those of the thorax, 

 with long scales, the rest of the segment, excepting the ante- 

 rior and posterior margins, with short scales. 



Spiracles. The first is situated on the under surface of the 

 mesothorax not far from the anterior angles; the remaining 

 eight pairs being situated near the anterior margin between 

 the lateral appendages of segments 1-8 of the abdomen. 

 Under the high powers of the microscope each spiracle is 

 seen to be surrounded by a ring of smooth, rounded spots 

 which I took, at first, to be additional apertures. The margin 

 of each spiracle is fringed with cilia. 



Legs of nearly equal length, all rather short, bristled rather 

 heavily. The coxte are very long, the full length not being 

 shown in the sketch at fig. 2', though the proportion of the 

 other parts are well given. 



This is a most remarkable larva, resembling, in m.any par- 

 ticulars, that of xiphorista vittata Fab., described by Prof. J. 

 B. Smith in the second volume of Entomologica Americana, 

 page 85, from which it presents, however, a number of curi- 

 ous divergencies. The vestiture, in the larva of Epipociis, 

 consists of the remarkable scales figured, while that of Aflior- 

 ista is composed, according to Prof. Smith, of numerous fan- 

 like clusters of hairs. In each case the scales or clusters 

 arise from distinct punctures. 



The pupa is of the shape shown in the figure. ' The gen- 



