100 



How can Mr. Morrison then say that opipara and islandica "do 

 not bear any resemblance to each other " ? 



As to A. scropulana, I think I am justified in making a sug- 

 gestion as to its identity with Pachnobia carnea, from its near 

 resemblance, as to which its author was entirely silent. It dif- 

 fers by the basal markings of the primaries, a character which 

 formed my principal difficulty in suggesting the identity of the 

 species. None of the other characters pointed out by Mr. 

 Morrison in his late paper appear to me to be valid, or other 

 than varietal and inconstant in the limited number of specimens 

 before me. The structure of the feet, so far as I can now see, 

 after a careful re-examination, is the same in both forms. The 

 line on the hind wings, the discal marks and the tone are the 

 same. 



In conclusion, I would draw attention to the fact that Mr. 

 Morrison's descriptions of opipara and scropulana, as well as 

 those of other species of the genus in the Proceedings of the 

 Boston Society of Natural History, are too indefinite for identi- 

 fication ; so that, did I not possess material received from him- 

 self, I would hardly be in a position to refer to his species at all. 



A. R. G-rote. 



BIBLIOGRAPHICAL RECORD. 



Authors and Societies are requested to forward their works to the Edi- 

 tor at the earliest date possible. We ask our readers to inform us of the 

 publication especially of those works which are not generally consulted by 

 entomologists. B. Pichnan Mann. 



{Continued from page 96.) 



No. 226 is from the Ann. Rep. Mus. Comp. Zool.,for 1874. 



* 226. C. R. Osten-Sacken. Report on the present con- 

 dition of the Collection of Diptera of the Museum of Compar- 

 ative Zoology, p. 14-17. 



Grouping of the materials by faunae ; degree of value to be attached to 

 the several groups. 



1 * 227. Sarah Hackett Stevenson. Boys and Girls in 

 Biology; or, Simple Studies of the Lower Forms of Life, based 

 upon the latest Lectures of Prof. T. H. Huxley, and published 

 by his permission. New York, Appleton, 1875. 8vo. pg. 186. 



1 Record furnished by Mr. George Dimmock. 



