VIII BULLETIN 201, UNITED STATES NATIONAL MUSEUM 



Class Crustacea — Continued 



Subclass Malacostraca — Continued 

 Division Peracarida — Continued 

 Order Mysidacea — Continued 



Suborder Mysida — Continued 



Family Mysidae Dana — Continued 

 Subfamily Mysinae — Continued 

 Tribe Mysini — Continued 



Genus Neomysis Czerniavsky — Continued Page 



Neomysis meridionalis Colosi (A) 1 203 



Neomysis monticelli Colosi (A) 203 



Genus Acanthomysis Czerniavsky 203 



Key to the American species of Acantho- 

 mysis 203 



Acanthomysis columbiae (Tattersall) (A)_. 204 



Acanthomysis sculpta (Tattersall) (A) 206 



A canthomysis costata (Holmes) (A) 206 



Acanthomysis stelleri (Dershavin) (A) 210 



Acanthomysis dybowskii (Dershavin) (A)__ 213 



Acanthomysis macropsis (Tattersall) (A)__ 215 

 Acanthomysis pseudomacropsis (Tattersall) 



(A) 217 



Acanthomysis longicornis (Milne-Edwards) 218 



Acanthomysis sp. ? (A) 218 



Genus Proneo?nysis Tattersall 219 



Proneomysis wailesi Tattersall (A) 220 



Genus Par acanthomysis Ii 220 



Paracanthomysis kurilensis Ii (A) 221 



Genus Mysidium Dana 222 



Key to the species of Mysidium 223 



Mysidium columbiae (Zimmer) (A) 223 



Mysidium gracile (Dana) (A) 223 



Mysidium integrum Tattersall (A) 223 



Genus Diamysis Czerniavsky 226 



Diamysis americana Tattersall (A) 226 



Genus Antromysis Creaser 229 



Antromysis anophelinae Tattersall (A) 230 



Antromysis cenotensis Creaser (A) 234 



Tribe Heteromysini 234 



Genus Heteromysis S. I. Smith 235 



Key to the species of Heteromysis 235 



Heteromysis formosa S. I. Smith (A) 235 



Heteromysis bermudensis G. O. Sars (A) 237 



Heteromysis antillensis Verrill (A) 238 



Heteromysis odontops Walker (A) 239 



Species not represented in the collections of the United States National 



Museum 242 



New genera, species, and varieties described herein 250 



Albatross dredging stations from which collections are reported (table 9)-_ 251 

 Albatross hydrographic stations from which collections are reported 



(table 10) 260 



Literature cited 263 



Index 285 



1 "A'' designates American species ; "P," Albatross Philippine species. 



