96 BULLETIN 51, UNITED STATES NATIONAL MUSEUM. 



P. 988. Monograph of the genus GnatJwdon Gray (Rangla Des- 

 moulins). By William H. Dall. 



pp. 89-106, 1 plate. 



P. 989. On the nomenclature and characteristics of the lampreys. By 

 Theodore Gill. 



pp. 107-110. 



P. 990. The nomenclature of the Myliobatidse or Aetobatidae. By 

 Theodore Gill. 



pp. 111-114. 



P. 991. The nomenclature of the family Poeciliidse or Cyprinodontidae. 

 By Theodore Gill. 



pp. 115-116. 



P. 992. The differential characters of the Salmonidfe and ThymallidaB. 

 By Theodore Gill. 



pp. 117-122. 



P. 993. On the relations and nomenclature of Stizostedion or Lucio- 

 perca. By Theodore Gill. 



pp. 123-128. 



P. 994. Description of a new species of cotton rat (Sigmodon minimi ^ 

 from New Mexico. By Edgar A. Mearns. 



pp. 129-130. 



P. 995. Notes on the invertebrate fauna of the Dakota formation, with 

 descriptions of new molluscan forms. By C. A. White. 



pp. 131-138, 1 plate. 



P. 996. The shells of the Tres Marias and other localities along the 

 shores of Lower California and the Gulf of California. By 

 Robert E. C. Stearns. 



pp. 139-204. 



P. 997. Notes on a Japanese species of reed warbler. By Leonhard 

 Stejneger. 



pp. 205-206. 



P. 998. A review of the fossil flora of Alaska, with descriptions of 

 new species. By F. H. Knowlton. 



pp. 207-240, 1 plate. 



P. 999. Diagnoses of new North American mammals. By Frederick 

 W. True. 



pp. 241-243. 



P. 1000. Descriptions of new species of starfishes and ophiurans, with 

 a revision of certain species formerly described; mostly from 

 the collections made by the United States Commission of 

 Fish and Fisheries. By A. E. Verrill. 



pp. 246-297. 



P. 1001. Notes on the anatomy and affinities of the Crerebidse and other 

 American birds. By Frederic A. Lucas. 



pp. 299-312, 13 figs. 



P. 1002. Discovery of the genus Oldhamia in America. By Charles 

 D. Walcott. 



pp. 313-315, 1 fig. 



