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then 2 in. in length spun the usual, light, very loose cocoon among the 

 leaves July 20th; the imago appeared about August 15. The pupa was 

 of the usual form and color covered with bloom; it measured 1.1 in 

 The anal hooklets unusually long. 



C. habilis. The larvae of this species were in company with those of 

 obscura mentioned above. Different sizes were taken; but slight changes 

 in color or ornamentation was noted at the moults. This larva is quite 

 different from any of the genus heretofore identified by me. 



An average mature caterpillar measured 2 in. in length; slender, 

 color dark, in some almost black, skin shining. Along the dorsum 

 there is a broad stripe lighter than the general hue, on either side a 

 darker one of equal width; the stigmatal stripes almost black; beneath 

 pale whitish with black spots on the middle segments. Head reddish 

 black with faint reticulations in white. 



Pupated in the usual cocoon, the first to change July 18 gave a moth 

 August 18. 



A CORRECTION. . 



In Papilio, Vol. I, p. 141, I described the larval characters of C. 

 r ■ electa as those of C. flebilis. The mistake was made by comparing my 

 moth with a rather diffuse specimen ©f reteda in the Harvey collection of 

 moths now in the Buf. Soc. of Nat. Sci. labeled "flebilis". As Mr. Grote 

 had seen this collection I supposed it approved by him and correct. It 

 was not and I correct my error by saying that what is said in the paper, 

 cited under C. flebilis refers to C. reteda. 



Mr. Geo. P. Welles, of Chicago, writes: — Has it ever occurred in 

 your experience, that certain species were local within extremely narrow 

 limits? I gathered Blethisa quadricollis under one stone during eight 

 or ten successive days, and never anywhere else. Also Omophron robust- 

 um under one particular chip, and in no other place. I have taken 50 

 Toxotus Schaumii from a little bush year after year and never one two 

 feet from there, except the first one I ever caught, which I took from 

 the mouth of a big Asilus which came flying towards me." 



These local occurrences are of extreme interest. Several such have 

 occured in my experience, notably in Tetraopes canteriator, for which 

 I know two small localities on Long Island where I can get them year 

 after year with absolute certainty; but though there is an abundance of 

 their food plant all about, they never leave these small patches. 



J. B. S. 



