228 ENTOMOLOGICAL NEWS. [June, '06 



to gain their species from the same source. The West Coast 

 could not get this fauna, because at that period it was barri- 

 caded at the north by great highlands, or else densely forested 

 and quite cool lowlands, districts which the more sun-loving 

 species would not penetrate. The mountains and cool-loving 

 species of the Eastern Continent would here, however, find a 

 congenial home, and as much as the mountain systems of the 

 two Continents there came in close touch with each other, it 

 was a simple matter that there should result a settlement of both 

 regions with a related fauna. This is what no doubt occurred 

 and it is with regard to this fauna the fauna of the mount- 

 ains and the cool lowlands, that the West Coast is more closely 

 related to the Palaearctic than is that of the eastern part of this 

 country. 



In order to bring out this point the more forcibly, he gave 

 the distribution of all the known species of certain genera of 

 the Silphidae, the list including the following : Nccrop/rilns, 

 Hadrame, Pelates, Pteroloma, Agyrtes, Sphccritcs (one of the 

 Nitidulid;e, according to Ganglbauer), Lyrosoma, Pinodytes, 

 Platycholcus. L/ater on, a box containing all of the American 

 species of this group with the exception of Pinodytes hamiltom 

 was shown, a new species of Pteroloma among the number. 



Dr. F. E. Blaisdell stated that considerable time had been 

 spent on the Gyrinidae, and that they needed revision. He 

 also stated that he had taken a large series of Gyrinus parcus at 

 San Diego, California, a species heretofore not credited to the 

 State, but from Texas. 



Mr. F. W. Nunenmacher stated that he had for exhibition a 

 box of Hyperaspis arranged according to Casey's classification. 

 H. j.-oculata appears as the western form of undulata. 



Mr. Chas. Fuchs read a paper on a trip to the Fort Tejon 

 region. 



Mr. Nunenmacher exhibited two new species of Hyperaspis^ 

 and a series of H. dissoluta Cr. as an extreme form of undulata. 



Dr. Van Dyke the Lepturae of the U. S. illustrating distri- 

 butional areas. 



Miss Julia Wright a box of exotic Coleoptera. 



Dr. Blaisdell a box of Californian Gyrinidae. 



F. E. BLAISDELL, M.D., Secretary. 



