262 THE CANADIAN ENTOMOLOGIST. 



/orjilis, which he had found at Columbus, Ohio, were somewhat different 

 from those exhibited by Mr. Southwick, /. e., more nearly cylindrical. 



Mr. Riley stated that he knew of no other species of Thyridopteryx 

 similar to epheinerceformis, although this species differed much as to the 

 character of their cases, especially those upon pine, when compared with 

 other trees. 



Mr. Kellicott stated that the larvse of Pterophora melshei7)ieri which 



he had noticed at Columbus did not have the prominent paddle-shaped 



appendages at the side of the head as always described ; that the case 



was a more perfect structure than that figured by Harris ; and that the 



moth's wings were more deeply sinuate, with the edges trimmed with white. 



The Club then adjourned. 



Friday, August 19, 1892. 



The Club met at 9.45, fourteen members present. The minutes of 

 the morning meeting of the previous day were read, and after amendment, 

 approved. 



Mr. Lintner occupied the chair while Mr. Schwarz read a paper upon 

 the Males of Xyleborus. 



Mr. Schwarz stated that there was no relative proportion of numbers 

 of the females to the number of males. In reply to a question by Mr, 

 Lintner, Mr. Schwarz stated that the white lining found in the borings of 

 dispar and other species was supposed to be a fungus, but it was not 

 known definitely. 



Mr. Smith thought it could be easily determined if it was a fungus by 

 microscopical examination. 



Mr. Osborn followed with Notes on the Species of Acanthia. 



NOTE ON THE SPECIES OF ACANTHIA. 



BV HERBERT OSBORN. 



I desire to call attention to the species of this genus, in order to get 

 further information, if possible, as to the occurrence of the species in this 

 country. The species of the genus that were described by Jenyns (Annals 

 of Natural History, 1839, IiI-:> P- 241-244) have often been considered 

 simply as the common house-bug occurring upon the different animals 

 which they were described as infesting — the bat, the pigeon, and the 

 swallow. As these descriptions are quite inaccessible to most students, 

 it will be in place to repeat them here, so that they may be compared and 



