UNITED STATES AND MEXICAN BOUNDARY. 



13 



Table I. Genera common to the Eastern and Western Continents. 



NAMES OF FAMILIES. 





RUSSIAN AMERICA. 



OREGON. 



CALIFORNIA. 

















1 



In Atlantic States. 





In Atlantic States. 





In Atlantic States. 





Adephaga, 

 Silphales, 

 Staphylinidas, 

 Scarabaeidae, 



47 

 11 

 42 



8 



. 27 



8 



25 



2 



4 

 3 

 5 



26 



2 

 Not collected. 

 5 



2 

 1 



36+2?* 

 3 



30 



7+lf 



1 



1 



Elateridae, 



11 



5 





10 





9 





Tenebrionidas, 



6 



1 





3 





4 



1 



Cerambycidae, 

 Chrysomelidae, 



17 

 16 



11 



6 



1 



13 

 10 



2 

 1 



10 

 13 



2 

 1 



* Callida, Patrobus. 



f Sinodendron ; a species from the Atlantic States is described by Beauvois. 



The genera of the table which have not been found in the Atlantic States are : 



In Russian America. — Miscodera, Leistus, Pelophila, Trachypachys, Necrophilus, Sphaerites, Lyrosoma, 

 Uolitochara, Syntomium, Phlceonoeus, Arpedium, Deliphrum, Eosalia. 



In Oregon. — Oallisthenes, Trachypachys, Necrophilus, Ergates, Rosalia, Timarcha. 



In California. — Anillus, Necrophilus, Calcar, Ergates, Mesosa, Timarcha. 



Of these Oallisthenes is found in the central portion of the continent, though not extending to the proper 

 maritime Atlantic region. 



It will be observed that many of these genera just mentioned are subarctic forms, 

 and may be expected to occur hereafter in Labrador. The genus Ergates must be 

 also received with caution into this list, as the same species is ranked in the British 

 Museum Catalogue under Macrotoma, a genus of much more extensive distribution. 

 We have then remaining of genera as yet known only in the temperate zone, found 

 on the western slopes of the two continents, but absent from the Atlantic slope of 

 America, only Anillus, Rosalia, Mesosa and Timarcha. 







Table II. 



Genera peculiar to America. 













V 











NAMES OF FAMILIES. 



1} 



RUSSIAN AMERICA. 



OREGON. 



CALIFORNIA. 

















^ &5 



In Atlantic 



Not- in Atlan- 



In Atlantic 



Not in Atlan- 



In Atlantic 



Not in Atlan- 





1 



States. 



tic States. 



States. 



tic States. 



States. 



tic States. 









A. 



B. 





A. 



B. 





A. 



B. 



Adephaga, 



17 



1* 







1 





3 



5 + 1? 



1 



7 



Staphylinidae, 



2 







1+1? 



Not col. 



Not col. 









1 



Scarabaeidae, 



7 









4 







4 





2 



Elateridae, 



7 



1 







2 







o 

 o 





1 



Tenebrionidae, 



19 







1 



2 



2 



1 



2 



4| 



12 



Cerambycidae, 



6 







2 



2 





4 



1 





"t 



Chrysomelidae, 



4 









2 







4 







*Pristodactyla : these species are included by Schaum in Calathus, and the genus should therefore not be 

 placed in this table by those adopting that view. 



fTiiorophus. Eurymetopon, Eleodes. Coniontis. tOeuemona? 



