52 THE CANADIAN ENTOMOLOGIST. 



when removed from the soil. Each cocoon has a curious roughened or 

 more granular spot on one side (the upper side in the figure). 



The white pupa is shown, twice natural size, at d on the plate. In 

 pupating, the larval skin is shed off the anal end in the same manner as 

 caterpillars do. In the case of the Spotted Pelidnota (Pelidnota pimctata), 

 however, the larval skin splits down the whole length of the back, retains 

 the larval shape, and forms a covering for the pupa^ which remains inside. 



On August 13th, or sixteen days after pupae were found in the cages, 

 several beetles emerged. They continued to appear daily until September 

 loth; more (33) emerged on August 22nd than on any other day. They 

 proved to be Enpho7-ia inda, Linn. 



This bumble flower-beetle evidently feeds only on decaying vegetable 

 matter, as rotting sod or manure, and is thus destructive only in the 

 beetle state. The beetles seem to do most of their injury soon after they 

 emerge in the early fall. One correspondent wrote me that he collected 

 forty-five of the beetles in one day on a single ripe peach. Doubtless the 

 beetles hibernate, but whether egg-laying takes place in the fall or spring 

 is not known. The fact that manure piled in August and October con- 

 tained many nearly full-grown grubs the next June indicates that the eggs 

 are laid and hatched in the fall, otherwise the grubs must develop very 

 rapidly after hatching from eggs laid in the spring. There seems to be 

 one brood of the insect in the course of a year. Hand-picking of the 

 beetles is apparently the most practicable method of combating it when 

 it is found working on ripe fruits or on green corn. 



Since the above was written, some further notes on this insect (read by Dr. Linlner 

 at the Buffalo meeting of A E. C. last August) have been published. Larvje were 

 sent to Dr. Lintner in chip manure in the latter part of June. On August 8th two 

 beetles had emerged in his cage, and an examination of the earthen cells revealed other 

 beetles and several pupa.-. An instance is given which seems to indicate that there is 

 a possibility that the grubs may have attacked growing corn, but the evidence is not 

 conclusive. 



Butterflies ok North America. — Mr. Edwards is about to pub- 

 lish the last Part, the seventeenth, of the third volume of this magnificent 

 work. It will contain three plates, illustrating Chionobas Iduna, Califor- 

 nica, Oeno, Varuna and Alberta, with their early stages, and the imago 

 of C. Peartise. There will also be accounts of Papilio Brucei and Ajax, 

 Neophasia Menapia, and Colias Eriphyle ; and supplementary notes on 

 a large number of other species, with title page and index. 



