1 88 



expressions of appreciation and words of cheer received from his sup- 

 porters; he also hopes to Hve to forget entirely the names of those 

 whose indifference to their obligations has made his brief experience 

 in scientific journalism so unpleasant. To the latter he has nought 

 else to say; to the former he hopes occasionally to speak in the pages 

 of E^itomologia Amej'icana. 



CORRECTION IN DR. GRUBER'S PAPER. 



In this volume, pages 83 and 115 and illustrated article (Plates i. 

 2 and 3) from the pen of Dr. A. Gruber, is translated from the 



Since the publication of the translation we have received an author's 

 extra, through the kindness of Mr. W. H. Edwards, of a correction 

 made by Dr. Gruber in the>n« Zeitschrift, Bd. XVIII, N. F. XI, of 

 which the following is a translation: Editor. 



I owe it to those who have taken an interest in my efforts, to make a 

 slight correction in my article "On the Caterpillars of N. Am. Papil- 

 ionidae and Nymphalidae," (a translation of which appeared in this 

 journal). I described the caterpillar represented in Fig. 17, PL VII, 

 as the Second Stage of Papilio AJax, but incorrectly; it is only a larger 

 example of the First Stage, which had been wrongly marked. Mr. 

 W. H. Edwards, of Coalburgh, from whom I obtained the described 

 caterpillars, kindly called my attention to this error, and sent me a few 

 examples of the Second Stage. I am thus enabled to offer the follow- 

 ing changes in my description: Pap. AJax, vSecond Stage: the color is 

 still dark; the skin appears smooth to the naked eye, but by the aid 

 of the lens we see that the warts are still present, though much smaller, 

 while the long forked bristles have quite disappeared and have been 

 replaced by very short fine hairs. 



The Second Stage is consequently an easy transition to the Third, 

 in which latter the striking markings have completely supplanted the 

 bristles; and there is, therefore, no such sudden change as I had be- 

 lieved to take place in passing from the Second to the Third. 



A. Gruber. 



Freiburg, April, 1885. 



