VI 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 Erythropini — Continued Page 



Genus Dactylerythrops Holt and Tattersall 126 



Dactylerythrops bidigitata Tattersall (A) 126 



Genus Dactylamblyops Holt and Tattersall 126 



Dactylamblyops sp. ? (A) 126 



Genus Amblyops G. O. Sars 128 



Amblyops abbreviata (G. O. Sars) (A) 128 



Amblyops sp. 1 (A) 130 



Amblyops sp. ? (A) 130 



Amblyops ohlinii Tattersall (A) 130 



Genus Paramblyops Holt and Tattersall 132 



Paramblyops rostrata Holt and Tattersall 



(A) 132 



Genus Pseudomma G. O. Sars 132 



Pseudomma affine G. O. Sars (A) 132 



Pseudomma roseum G. 0. Sars (A) 132 



Pseudomma truncatum S. I. Smith (A) 134 



Pseudomma berkeleyi Tattersall (A) 135 



Pseudomma sp. ? (A) 135 



Pseudomma oculospinum Tattersall (A) — 135 



Genus Caesaromysides Colosi 137 



Caesaromysides liguriae Colosi (A) 137 



Genus Michthyops Tattersall 137 



Michthyops parva (Vanhoff en) (A) 137 



Tribe Leptomysini 138 



Genus Leptomysis G. O. Sars 138 



Leptomysis gracilis G. O. Sars 138 



Leptomysis mediterranea G. O. Sars 138 



Genus Mysidopsis G. O. Sars 138 



Key to the American species of Mysidopsis. 138 



Mysidopsis angusta G. 0. Sars _ 139 



Mysidopsis gibbosa G. 0. Sars 139 



Mysidopsis acuta Hansen (A) 139 



Mysidopsis bigelowi Tattersall (A) 139 



Mysidopsis inermis Coif mann (A) 142 



Mysidopsis californica Tattersall (A) 142 



Mysidopsis morlenseni Tattersall (A) 145 



Genus Metamysidopsis Tattersall 146 



Metamysidopsis munda (Zimmer) (A) 147 



Metamysidopsis elongata (Holmes) (A) 149 



Metamysidopsis pacifica (Zimmer) (A) 151 



Genus Promysis Dana 151 



Promysis orientalis Dana (P) 151 



Promysis atlantica Tattersall (A) 152 



Genus Doxomysis Hansen 152 



Doxomysis quadrispinosa (Illig) (A) (P)_. 152 



Doxomysis microps Colosi (A) 153 



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



