52 THE CANADIAN ENTOMOLOGIST. 



fourth of the first patch (in one specimen only the corner), and extends 

 obliquely to the internal vein ; outside of this the eighth yellow spot is 

 not obsolete, but large, squarish, and confluent with the seventh. 



Beneath, the smoky tinge of the inner margin of the primaries is re- 

 placed by dark brown between the base and the seventh and eighth yellow 

 spots ; the seventh is sharply defined, and the eighth shades off exteriorly. 

 This dark-brown area (made up in part of a sub-triangular spot, its darker 

 part oval, and representing the outer sexual dash above) cuts snarply 

 against the cell. The costal border, the cell, and the whole of the 

 secondaries, have a strong tawny tinge in a fresh specimen. The cross 

 line at the end of the cell is visible, and a dark shade reaches outwardlv 

 to both the fourth and fifth spots ; the cell is bisected lengthwise by a dark 

 line. Ex. males 1-4 — 1-5. Females 1-5. 



In a female specimen, likewise from Iowa, the secondaries beneath are 

 suffused with the same tawny color as in the male. My males unques- 

 tionably belong to my female, and the female agrees well with Edwards' 

 description and figure, whereas Mr. Scudder confesses that his does not 

 in particulars that seem important. 



HOW TO DISTINGUISH BETWEEN LIMENITIS DISIPPUS— 

 Godt, ANT) L. URSULA, Fabr., IN THEIR PREPARATORY 



STATES. 



BV C. V. RILKV, 



State Entomologist of Missouri, St. Louis. 



It is not. I believe, generally known that, closely as these two insects 

 resemble tLtch other in the larval and pupal states, they may, never- 

 theless, be readily and invariably distinguished by the constant differences 

 in the anterior horns of the former and in the hump of the latter. I 

 was fortunate enough, the present summer, to have several larvoe of each 

 species feeding, as also several pupae of each hanging, at one and the 

 same time ; and with the exception of the characters here given, I do 

 not think there are any other distinguishing features to be relied upon. 

 On an average, the mature larva of Ursula is larger, the head is some- 

 what smoother, and the mamma-like warts on joint 5 more prominent, 

 while the average size of its pupa is also greater ; but, when a sufficient 



