THE CANADIAN ENTOMOLOGIST. 115 



height about equal. Surface minutely roughened. Ocelli black, arranged 

 in a semi-circle following the contour of the face, four in front and two 

 on lower side. The third and fourth are twice the size of the others. 

 Mandibles white with black tips. Thoracic shield not distinguishable. 

 Body glaucous green with a pale sub-dorsal band, clearly defined with 

 white above, much paler below, leaving a distinct green dorsal stripe. 

 Supra-lateral stripe conspicuous, creamy white and clearly defined ; not so 

 wide as the pale sub-dorsal band. Below this, and half way to the 

 spiracles, is a very pale thread-like supra-stigmatal line. Spiracles white, 

 very inconspicuous on a thread-like line, or perhaps this may only be the 

 tracheae showing through the skin. On segments three and four 

 (counting the head as No. i) there appear to be beneath the transparent 

 skin, instead of spiracles, knots of tracheae. Whole body, including the 

 head, minutely shagreened and covered with small piliferous papillae, 

 which, on segments two, three and four, are black at the base of the hairs, 

 The segmental folds of the body of the mature larva are as follows : — 

 Segment two, transversely grooved ; segment 3, three equal folds ; seg- 

 ment 4, four small folds ; segments 5 to 1 1 consist of five folds, the anterior 

 twice the width of the second, which, again, is twice the width of each of 

 the other three ; segment 12, three equal folds; segment 13, two small 

 folds and the anal flap. 



Some interesting epidermal organs, first observed upon this species, 

 but since found on the larvae of other Pamphilidae, as well as on the pupa 

 of P. Cerjies, (the only pupa I have examined) are some small round 

 chitinous disks, which appear to be trichomes or modified hairs. I form 

 this conclusion from finding that, in one species, there occurred in two 

 instances, instead of these disks, piliferous tubercles ; they are rather 

 ■small and difficult to examine. In the larva of C. Maiidan, they appear to 

 be saucer-shaped, having a raised edge. In the larva of a species of 

 Pamphila, near to Ma?iitoba, they are, in some instances, simple annuli ; 

 but, in P. Certies and P. Mystic, seem to be rather cone-shaped. 



Upon the larva of C. Maiidan^ they are arranged in three lateral series, 

 two of which are complete and occur on all the segments except the 

 head, and the other ventral and incomplete, occurring only on segments 

 five, six and eleven. 



The first series is placed above, and anterior to the spiracles, and the 

 disks are sometimes double upon the abdominal segments ; but they are 

 not always uniform on the opposite sides of the body. In the specimen 



