134 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Allen, J. A. List of mammals collected in Alaska by the Andrew J. Stone 
expedition of 1901. Bull. Amer. nras. nat. hist., xvi, p. 215-230. July 12, 
1902. 
Twenty-six species. Critical notes and field observations. 
Allen, J. A. A preliminary study of the South American opossums of the 
genus Didelphis. Bull. Amer. mus. nat. hist., xvi, p. 249-279. August 18, 
1902. 
Contents : introduction (p. 249), historical resume and nomenclature 
(p. 250), species and subspecies of Didelphis (p. 253), descriptions of South 
American species and subspecies (p. 257), tables of external measurements 
(p. 276). The name marsupialis is applied to the South American species 
currently known as karkinophaga , and mesamericana Oken to the large 
Mexican opossum. D. marsupialis etensis subsp. nov. is recorded from 
Panama. 
Allen, J. A. Mammal names proposed by Oken in his “Lehrbuch der 
Zoologie.” Bull. Amer. mus. nat. hist., xvi, p. 373-379. October 11, 1902. 
The following names of North American mammals are changed: 
Spermophilus to Citellus, Galictis to Grison, Galera to Tayra , Didelphis 
marsupialis (as applied to the Mexican opossum) to D. mesamericana. 
Allen, J. A. A new caribou from Ellesmere Land. Bull. Amer. mus. nat. 
hist., xvi, p. 409-412, text fig. 1-2. October 31, 1902. 
Rangifer pearyi. 
Allen, J. A. The hair seals (family Phocidae) of the North Pacific Ocean 
and Bering Sea. Bull. Amer. mus. nat. hist., xvi, p. 459-499, text fig. 1-10. 
December 12, 1902. 
Contents : introduction (p. 459), nomenclature (p. 461), sexual differences 
in dentition in Phoca vitulina (p. 471), comparison of the Atlantic and 
Pacific forms of the Phoca vitulina group (p. 471), the North Pacific 
Phocidae (with descriptions of new forms) (p. 473). The name Phoca 
largha is rejected as undeterminable (p. 463-464), and the seals to which 
it has been applied are divided into six forms : Phoca ochotensis (Okhotsk 
Sea), P. o. macrodens (southeastern Kamschatka to Point Barrow, Alaska), 
P. stejnegeri (Commander Islands), P. richardii (continental coast of 
North Pacific), P. r. pribilofensis (Pribilof Islands), and P. r. geronimensis 
(Lower California and Santa Barbara Islands). The other species treated 
are : Erignathys barbatus (p. 473), Histriophoca fasciata (p. 474), Phoca 
groenlandica (p. 475), Phoca hispida (p. 477), and P. h. gichigensis 
(p. 478). 
Allen, J. A.; Bangs, Outram; Evermann, Barton Warren; Gill, 
Theo. ; Howell, Arthur H. ; Jordan, David Starr ; Merriam, C. 
Hart; Miller, Gerrit S., Jr. ; Nelson, E. W.; Rathbun, Mary; and 
Thomas, Oldfield. A method of fixing the type in certain genera. Sci¬ 
ence, n. s., xvi, p. 114-115. July 18, 1902. 
The following rule recommended : A generic name which is the same 
as that of an explicitly included species (or a cited post-Linnaean synonym 
of such species) takes that species as its type regardless of subsequent 
elimination. 
