352 [February 



lu the year 1862 I bred a JjJack 9 Tunms from a larva found near Rock 

 Island on the wild cherry in 1861, which was pea-green, and correspond- 

 ed accurately with another larva taken by me in Southern Illinois, on sas- 

 safras, the description of which I annex. This fact, I think, disposes of 

 Mr. StauflFer's theory of the larvas of the two insects being distinct, that 

 of Glancns brown, that of Tui'nus green. The larva from South Illinois 

 died in the pupa state. 



Length 2J inch. Diameter of the third segment .4 inch; of abdominal segments 

 I inch. Color opaque velvety grass-green, lighter on the sides with a bluish tint, 

 verging to white beneath. Head bluish, lighter in front. The nuchal fork behind 

 the head one-sixteenth of an inch long when contracted, fuscous, its base yellow- 

 ish, its prongs which are sharp black. The first and second segments of the body 

 narrowed, the third and fourth broadest, thence tapering a little to the tail. The 

 first segment yellowish behind the head. On the humerus of the third segment 

 an irregularly oval yellow spot .1 long, bordered by a narrow black line, and with 

 a black figure "10" in its centre, the 1 of the 10 inside. A pale narrow yellow 

 band above at the back of the fourth segment, followed by a still narrower black 

 band. On the middle of segments 4 — 11 four transverse equidistant blue dots, con- 

 spicuous on 4, fainter on 10 and 11. Inside of each humeral yellow spot or figure 

 of 10 one blue dot, on segment 4 an appearance of two additional lateral dots 

 above the spiracle. Anal segment light bluish-green. Legs immaculate, greenish 

 white. 



I have on four or five occasions found upon apple-trees young papilion- 

 ide larvie, 2 inch long, brown before and behind and white on their cen- 

 tral segments, which, although I was unable to breed them, I suppose 

 to be the immature form of the larva of Tu7-nus, since that larva, as is 

 stated by Dr. Fitch, sometimes occurs on the apple. IMay it not be pos- 

 sible that the larvae described by Mr. StaufFer were in an intermediate 

 state between this very young form and the full grown larva, which in the 

 six or seven specimens that I have at various times met with was always 

 grass-green ? 



I observe that Mr. Ridings says that "he has taken female (Tarni) of 

 all shades from a deep black to a dark yellow." I suppose I have taken 

 over 50 black females of Tuduis altogether, when unrubbed and new, 

 they are always black; when weather-worn and old, they assume a palev 

 and dingier hue, and the tiger stripes become plainer; but in no instance 

 was there any approximation to yellow. The yellow female is, with us, a 

 shade and only a shade darker than the male." 



The following papers were presented for publication in the Proceedings: 

 "American Micro-lepidoptera, by Brackeuridge Clemens, M. D." 



