816 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult female.— Length, (skins), 205-250 (223); wing, 162.5-181 

 (170.3); tail, 71.5-85.5 (79); culmen, from cere, 13-15 (13.9); tarsus, 

 40-46.5 (43); middle toe, 18-20.5 (19.5).'^ 



a Thirty-three specimens. 



Locality. 



Five adult males from Argentina, etc. (S. c. cunicularia) 



One adult male from Guatemala 



One adult male from State of Mexico 



One adult male from southern Tamaulipas 



One adult male from Jalisco 



One adult male from Colima 



Two adult males from southern Lower California 



Eight adult males from California 



One adult male from Guadalupe Island, Lower California 



Three adult males from Arizona (2) and New Mexico (1) 



Six adult males from Texas 



One adult male from Wyoming 



Ten adult males from Clarion Island (S. c. rostrata) 



One adult male from Margarita Island, Venezuela (S. c. bra- 

 chyptera) 



FEMALES. 



Five adult females from Argentina, etc. (S. c. cunicularia) 



One adult female from western Panama (Chiriqui) 



Two adult females from Guatemala 



One adult female from Yucatan 



One adult female from Vera Cruz 



Three adult females from Michoacan 



One adult female from Jalisco 



Two adult females from Sinaloa 



One adult female from Colima 



One adult female from Guadalupe Island 



One adult female from Santa Margarita Island 



One adult female from Ceralos (=Cerros?) Island 



One adult female from Cape San Lucas 



One adult female from San Clemente Island 



Two adult females from San Benito Island 



Two adult females from New Mexico 



Six adult females from Texas 



One adult female from Colorado 



One adult female from Montana '. 



One adult female from Nevada 



Two adult females from Nebraska 



Two adult females from Clarion Island {S. a. roatrata) 



One adult female from Margarita Island, Venezuela (S. e. bra- 

 chyptera) 



Wing. 



179.5 



162 



174 



175 



178 



174 



169.2 



174.1 



173.5 



171.7 



170.7 



173 



165 



142 



ISl 



173 



167.7 



167.5 



178 



166 



172.5 



172.5 



170.5 



165 



164 



172 



172 



173 



168.5 



167 



171.2 



171 



170 



166 



181 



164.2 



Tail. 



73 



81 



83 



77.5 



84.5 



83 



84 



82 



81.3 



79.2 



84.5 



76.3 



63.5 



83.7 



79 



73.2 



78 



79 



77.2 



80 



81.2 



78 



79 



74 



79 



77 



81 



74 



78.5 



80.2 



79.5 



79 



83 



83.5 



70.2 



63.5 



Cul- 

 men, 

 from 

 cere. 



16 



14 



14.5 



13.5 



14.5 



13.5 



14.2 



14.3 



13.5 



14.5 



14.2 



13.5 



16.1 



15.5 



13.5 



13.7 



14 



13.5 



13.5 



14.5 



13.7 



14 



13 



14 



14.5 



14 



14 



13 



14 



13.9 



15 



14.5 



14 



14.5 



16 



Tarsus. 



47.3 



44 



43 



47 



46.5 



43 



44 



46.4 



44.5 



43.8 



45.4 



46 



47.1 



40 



46.8 



43.5 



41.2 



43 



43.5 



41 



40.5 



43.5 



44 



41.5 



43 



42 



43 



44.5 



44.7 



43 



40.6 



43 



46.5 



44 



42 



45.2 



I am not able, from the material examined, to make out any variations in the series 

 from the continent of North America (western United States to Panama) except 

 those which seem to be purely of an individual character. 



