15 



segments of the thorax each bear two rows of piliferous tubercles, — 

 the anterior of four large quadrate spaces, the posterior of two, 

 sometimes united on the middle line. 



From the fourth to the tenth segment, the piliferous tubercles 

 above the spiracles are in two transverse rows of four each, those 

 of the anterior row being quadrate with rounded angles, and at least 

 as large as the interspaces between them, and those of the posterior 

 row transversely elongated, about twice as long as wide. The lateral 

 tubercle of the anterior row immediately above the spiracle is emar- 

 ginate at its posterior inferior angle, on all the segments from the 

 sixth to the ninth. On these segments is a smaller tubercle, im- 

 mediately behind and beneath the spiracle, and two additional ones 

 occur between the spiracle and the proleg. Directly before and 

 without each proleg, is a narrow arcuate tubercle, bearing several 

 long hairs. The hairs upon the dorsal tubercles are at least as long 

 as the corresponding segments of the body. 



The anal shield is smooth, of the same dark reddish brown color 

 as the piliferous tubercles, and bears a few long brown hairs. The 

 spiracles are all dark brown, the anterior the larger, and the two 

 posterior next in size. The ventral surface is a little paler than 

 the dorsal, the prolegs have a yellowish tinge, the thoracic legs are 

 dusky. 



Length of a full-grown specimen .6 to .8 of an inch, its greatest 

 width .1 inch. 



Pupa. — The pupa is smooth, shining, pale brown, the abdomen a 

 little darker, without hairs or spines. Eyes reddish brown, bilobed 

 above ; abdomen with an obtuse horny tip. 



Length .4 inch, breadth .1 inch. 



Imago. — Prof. Fernald, whom 1 requested to prepare a description 

 of the moth, kindly furnished me the following, in advance of its 

 proposed publication in the Canadian Entomologist: * 



Cbambus zeellus, n. s. Fernald. 



"Expanse of wings, from 18 to 24 mm. 



Palpi, head and thorax, pale leaden gray. The labial palpi 

 extend forward as far as the length of the head and thorax. The 

 maxillary palpi are as long as the head. 



Fore wings, dull leaden gray, mixed with ashy and whitish, 

 especially on the outer part, and crossed beyond the middle by two 

 angulated dull ochre yellowish lines, overlaid more or less with dark 

 brown. The first line crosses the end of the cell where it is 

 angulated. The second crosses the wing about half way between 

 this last and the end. The terminal line is dark brown, and a 

 dark brownish cloud extends obliquely in from the apex to the 

 second line, but does not reach the costa. A narrow ochre-yellow 

 line, somewhat curved, extends from the middle of the base of the 

 wing to the second line near the anal angle, and a similar line, 

 though less plainly marked, runs parallel, between this line and the 



♦Since published in Vol. XVII, 55, March, 1885. 



