THE MYSIDS 



INTRODUCTION 



The Mysidacea from the plankton hauls made by the 

 Carnegie during the world cruise which, unfortunately, 

 had such a tragic termination in the harbor of Apia, 

 Western Samoa, in November 1929, were kindly submit- 

 ted to me for examination. The author is greatly indebt- 

 ed to Dr. J. A. Fleming, Director of the Department of 

 Terrestrial Magnetism, for the privilege of reporting on 

 this collection. It was not rich in species, nor in indi- 

 viduals, with the exception of Siriella thompsonii, but 

 contained examples of interesting and rare species. 

 Fifteen species are represented altogether, two of 

 which are new to science. One of these is a new species 



of the genus Anchialina, and the other a single specimen 

 of a very curious and anomalous form, whose affinities 

 are for the moment obscure in the absence of male spec- 

 imens. The author has associated it with the ill-fated 

 vessel to which we owe its capture, in a new genus, 

 Carnegieomysis. 



The geographical range of most of the species has 

 been extended by the work of the Carnegie. The author 

 has indicated under each species the known geographical 

 range, and the additions made to it by the present rec- 

 ords. 



ORDER MYSIDACEA 



Suborder MY SI DA 



FAMILY MYSIDAE DANA 



Subfamily SIRIELUNAE, Norman 



Genus SIRIELLA, Dana 



Siriella thompsonii (Milne-Edwards) 

 OCCURRENCE 



Station 



Latitude 



Longitude 



Depth 



Date 



Sample 



Atlantic Ocean 



63 



