THE CANADIAN ENTOMOLOGIST. ' 4o 



all ; entire upper surface studded with low rounded tubercles varying in 

 size, but always small, placed on the cross-ridges ; these are whiter than 

 the ground color and from each proceeds a very short, straight white hair ; 

 under side, feet and legs a shade lighter than the upper, 5, 6, 11, 12 

 crossed by tubercles ; head sub-ovate, depressed at top, the height to the 

 breadth as 8 to 7 ; color gray-green, thickly covered with tubercles like 

 those on body, small and large ; among these are larger ones, three on 

 either lobe in triangle, so disposed as to make a row of four across fore- 

 head ; these are white, with a brown rim about base, or the inner pair are 

 white, the others black ; on each vertex a triplex process as described at 

 fourth stage, black ; along the back and sides white processes, of which a 

 duplex or bifid one, taller than elsewhere, stands on either side suture ; 

 ocelli black. From fourth moult to pupation ten days. Mr. French, But. 

 East. U. S., p. 228, gives the length of mature larva as 1.55 inch, and 

 probably wild examples are larger than my bred ones. 



Chrysalis. — Length .65 inch ; breadth across mesonotum .38 inch, 

 across abdomen .4 inch ; shape much as in Danais Archippas, the last 

 segments retracted in same way, so that the abdomen is greatly shortened, 

 and the shape that of a dome ; the head case short, narrow at top and 

 bevelled to a sharp, slightly incurved ridge ; the sides sloping ; mesono- 

 tum prominent, carinated, rising posteriorly to a rounded point, the slope 

 to top of head regular, and at about 45 ° ; the depression behind shallow 

 and broad ; the dorsal edges of wing cases prominent, the sides exca- 

 vated ; color light green granulated with whitish ; the edges of wing cases 

 and top of head case whitish. Duration of this stage nine to twelve days. 



Some stages of the larva of this species were figured in Butterflies of 

 N. A., vol. 1, 187 1, under the name of Gly cerium. The drawings were 

 made expressly for me by the late Dr. H. K. Hayhurst, then at Sedalia, 

 Mo. They are before me as I write. The same drawings were used by 

 Prof. Riley, before my Plate appeared, in his paper on P. Glycerium, 

 Second Ent. Report, Mo., 1870, and his wood cuts were reproduced in 

 Prof. French's Butterflies of the Eastern U. S., p. 228, 1886. These are 

 the only published illustrations of the life history of any species of Paphia 

 so far as I know, and whatever defects there may be in the figures of the 

 larvae are common to all three of the works mentioned. The principal 

 figure is that of the mature larva, and in But. N. A. a fair general view of 

 the stage is given. But the peculiar armature of the body and head is 

 not represented, and therefore this figure has very little value. Another 



