THE CANADIAN ENTOMOLOGIST. 139 



I only took such Diptera as chanced to come in my way while collecting 

 Coleoptera and Lepidoptera, the list is a very incomplete one. But as it 

 contains some species not on the Society's List, I thought it better to give 

 it, imperfect as it is, rather than wait until further collections would enable 

 me to extend it. 



NORTH AMERICAN TORTRICID^, BY LORD WALSINGHAM, 



M. A., F. L. S., &c. 



BY C. H. FERNALD, STATE COLLEGE. ORONO, MAINE. 



The above is the title of a very interesting paper which his Lordship 

 had the kindness to send to me, and which was published in the Transac- 

 tions of the Entomological Society of London for April, 1884. 



This paper of 27 pages and one colored plate contains descriptions of 

 24 new species and one new genus ( Pseudoco7ichylis), with copious notes 

 on others. These insects were collected by Mr. H. K. Morrison in Mexico, 

 Arizona, Montana, Wisconsin, North Carolina and Florida, and the paper 

 is also of value in giving the distribution of many well known species. 



His Lordship calls attention to the fact that Conchylis biinaculana 

 Robs, is distinct from Hiibner's Pharmacis sartafia, although placed as a 

 synonym in my Catalogue of the Tortricidae. I had already reached the 

 same conclusion from material which I received from Florida, but had not 

 published the fact. 



The generic names Bactra and Aphelia are both used, inadvertently, 

 without doubt, for I have already shown (Ent. Month. Mag. vol. 20, p. 

 126) that they are synonymous and only one can be used. 



Lord W. speaks in his introductory remarks as follows : " The great 

 dividing range of the Rocky Mountains exercises, as might have been 

 expected, a very important influence upon the Micro-Lepidoptera of 

 North America, forming a barrier over which these delicate insects are 

 apparently unable to pass. The proportion of eastern species found on 

 the western side of this barrier is remarkably small, although the same 

 genera are for the most part represented more or less abundantly in both 

 parts of the continent." 



While these remarks are certainly true, it is a noticeable fact that quite 

 a number of species have actually distributed themselves all over the 

 country and occupy the territory on both sides of the great mountain 



