ii6 B.C. Entomological Society. 



NOTES ON THE CHANGES IN GEOMETRID NOMENCLATURE, 

 WITH RECORDS OF SPECIES NEW TO THE LIST OF 

 GEOMETRIDAE FOUND IN BRITISH COLUMBIA. 



By E. H. Blackmore, Victoria, B.C. 



As a kind of preface to my paper, I would like to say that I think 

 the time is fast approaching when we, as a Society, shall have to prepare 

 a new check-list of British Columbia Lepidoptera. There have been 

 many revisions of genera and changes in nomenclature in the nine years 

 which have elapsed since our last list was published, also there are quite 

 a number of new records in nearly all the families to be added to the list. 



Speaking of the Geometridje, the family in which I am most inter- 

 ested, perhaps the time is hardly quite ripe, as there are still many knotty 

 problems remaining to be solved and much research-work yet to be done. 

 I am at present, in conjunction with Mr. L. W. Swett, of Boston. Mass., 

 working on several groups, particular!}- the two genera Petrophora and 

 Mesoleuca and the Alois latifasciaria-imitata group, which we expect to 

 get straightened out this year, and the results of which I hope to read 

 at the next annual meeting of our Society. Fortunately, Mr. .Swett is in 

 close touch with the University Museum of Harvard College, which, in 

 addition to housing his own large collection, contains most of Packard's 

 types, many of which came from Victoria, B.C., being collected by a Mr. 

 G. R. Crotch some forty years ago. 



The purpose of my paper is to give some of the most important 

 changes in nomenclature affecting our British Columbia Geometridfe. 

 and by including the records new to British Columbia making it of some 

 little help to those interested in this particular family. In the following 

 additions to the list I would like to remark that those species taken in 

 the Okanagan Falls District in 1913, and in the Atlin District in 1914, 

 were all collected by Mr. E. M. Anderson, of the Provincial Museum, 

 who lias made extensive collecting trips in those localities during the 

 past two seasons. 



Taking the Geometers in order as they appear in Dyar's List, which 

 in the main is the same as Hulst's classification, the name of Cladora 

 atroliturata A\'alker is the first one to be added to the list, taken on April 

 20th, 1913, at Okanagan Falls. This is a decidedly interesting record, 

 as it is a distinctly Eastern species, occurring in the Atlantic States. 

 The specimen captured was in tine condition and does not differ in any 

 way from the typical specimens. 



Philopsia nivigerata Walker. One specimen taken by me at Victoria 

 on ]\Iay 4th, 1913. It bears a close resemblance to Philopsia (Talledega) 

 montana Pack., but is quite distinct. According to Mr. R. F. Pearsall, 

 ip Canadian Eiifoiiiolcgist, December, 1906, the distinguishing characters of 



