30 PSYCHE [April 



ham. Of the two examined at this time, one contained a very small larva and the 

 other was empty. One of the alder rolls from ISIaine was opened at the same time 

 and found to contain a much larger larva. On September 4th three of the hazel rolls 

 were opened and several small, yellowish white, footless larvae were found between 

 the folds of the roll, and a larger larva in the center of the roll. These small larvae 

 were about 1 mm. in length. There were several of the rolls that were fastened to- 

 gether by a web at this time and an examination showed that a dark, smooth, Lepidop- 

 terous larva had been feeding on the rolls and leaving a mere shell with a hole in the 

 side. The rolls were also covered with small white mites. On February 4th two 

 hazel rolls were opened and one larva about 6 mm. long was found in each. They 

 were similar to the one found in the alder roll on July 30th, but larger. The inside 

 of the roll was filled with fine dust leaving only two or three of the outside folds intact. 



A large number of alder and hazel rolls were collected in 1905 and kept until 

 the next summer when, in June, nearly every alder roll yielded an adult weevil and 

 six or more were obtained from the hazel rolls. The latter were, hoM-ever, not fully 

 developed, perhaps on account of being kept too dry. Not being able to detect any 

 marked difi^erence between the alder and the hazel specimens, I sent several of each 

 to Mr. Frederick Blanchard who very kindly examined them and wrote me that he 

 was unable to discover any difference between them, but on account of the condition 

 of the specimens he could hardly consider this as being conclusive. 



Assuming that there is only one species, I am unable to offer any explanation 

 why the food plant should differ in the two localities. It cannot be attributed to the 

 abundance of one species of plant in one locality and its scarcity in the other because 

 at Monmouth, Maine, the two species of shrubs grow side by side; at Wales, Maine, 

 I do not remember seeing any hazel, certainly not in the immediate vicinity of the 

 infested alders; at Framington, Mass., in one locality the alder is the more abundant 

 and in another place the hazel patch is isolated. 



Besides the article by Dr. Packard, previously referred to, the following papers 

 on the habits of the species of the Attelabidae have been brought to my attention by 

 Mr. Blanchard: Notes on Attelabus Bipustulatus by Miss Mary Murtfeldt, Can. 

 Ent. V. IV, 1872, p. 143. Attelabus Bipustulatus, Fab. Theory of Oviposition and 

 Construction of Nidus; Miscellaneous Notes by A. Arsene Girault, Ent. News, v. 

 XV, pp. 189-193. A brief mention of Attelabus rhois on the hazel in the Can. Ent. 

 v. XXIII, pp. 21 and 26. Cambridge Natural History of Insects, pt. II, p. 29, gives 

 an account of the operations of Rhynchites hetulae, an European leaf roller, and refers 

 to more extensive remarks by German writers. 



