90 RECONNAISSANCE FROM CARROLL, MONTANA, 
LARIDZ. 
136. LARUS DELAWARENSIS, Ord. 
RING-BILLED GULL. 
Common on Yellowstone Lake and on the Missouri River. 
COLYMBID. 
137, COLYMBUS TORQUATUS, Brunn. 
Loon; GREAT NORTHERN DIVER. 
Observed frequently on alkaline pools in Dakota and on the Missouri River. 
PODICIPID. 
138. PODICEPS CORNUTUS, Lath. 
HORNED GREBE. 
Abundant during migrations on the Missouri, and all streams and pools in the mountains. 
139. PODILYMBUS PODICEPS, (Linn.) Lair. 
PIED-BILLED GREBE. 
Abundant on alkaline pools in Dakota. 
PARTIAL LIST OF THE MAMMALS AND BIRDS OF THE YELLOWSTONE PARK, 
This list, which is of course very incomplete, consists merely of the observations of Mr. C. H. 
Merriam in 1872 and those made by myself in 1875. Such species as were noticed by only one 
observer are followed by the initial letter of his name. 
MAMMALS. 
. Nycticejus crepuscularis, Allen, M. 
. Vespertilio lucifugus, LeConte, M. 
. Vespertilio yumanensis, Allen, M. 
Felis concolor, Linn, G. 
Lynx rufus, Raf., G. 
. Lynx canadensis, Raf., G. 
. Canis occidentalis, Rich., G. 
. Canis latrans , Say, G. 
. Mustela americana, Turton, G. 
10. Putorius pusillus, Aud. & Bach., M. 
11. Gulo luscus, Sabine. 
12. Mephitis mephitica, Baird, M. 
13. Mephitis bicolor, Gray, M. 
14. Ursus horribilis, Ord. 
15. Ursus americanus, Pallas. 
16. Sciurus hudsonius, Pallas. 
17. Tamias quadrivittatus, Say. 
