oD HoNY^'iLL, Birds of Cass and Crow Wing Counties, Minn. [jan. 



Tree Swallows were seen flying over Crooked Lake on September 5, 1911. 

 In 1912 Tree Swallows were again observed upon several occasions, but 

 never more than a few individuals were seen at one time. 



94. Riparia riparia. Bank Swallow. — Although I knew that these 

 birds occurred in this region because of the numerous nesting holes I had 

 seen in several sand banks, it was not until the summer of 1912 that I 

 actually saw the bird. Two pair nested in a small bank at the camp which 

 liad been formed by digging out sand for building purposes. The actual 

 nesting bank was not over four feet high or eight feet long and it was in- 

 teresting to note that the birds had started 22 different holes before they had 

 succeeded in completing two that were satisfactory for nesting purposes. 

 Some of these holes were only a few inches deep, others nearly a foot. In 

 each case the birds had been discouraged because a large stone or a root 

 obstructed further progress. 



95. Compsothlypis americana usneae. Northern Parula War- 

 bler. — I was shown the skin of an adult male that was found dead about 

 the last of June, 1911. 



96. Dendroica coronata. Myrtle Warbler. — Observed on August 

 18 and 26, 1911. In both cases only one bird was seen and that at a short 

 distance from the camp. 



97. Certhia familiaris americana. Brown Creeper. — This bu-d 

 was inadvertently omitted from the original list. It was seen on, August 

 28, 1908, and again on August 3 and 9, 1911. 



SOME BINARY GENERIC NAMES. 



BY GREGORY M. MATHEWS, F. R. S. E. 



In the Nov. Zool., Vol. XVII, 1910, pp. 492-503, I wrote: "On 

 .^ome necessary alterations in the nomenclature of birds," and there 

 drew attention to the illegality of the " Brissonian genera " accord- 

 ing to my interpretation of the International Code. 



The second part, published six months later (Vol. XVIII, pp. 1-22, 

 1911), commented on the 20th Opinion rendered by the Inter- 

 national Commission of Zoological Nomenclature which, dealing 

 with the Gronovian genera, ruled that these were admissible though 

 Gronow was not a binomialist. This ruling was based on the 

 interpretation of the word "binary": the Commission concluded 



