A REVIEW OF THE MYSIDACEA 113 



Genus METERYTHROPS S. I. Smith 

 Meterythrops S. I. Smith, 1879, p. 93. 



METERYTHROPS PICTA Holt and Tattersall 



Meterythrops picta Holt and Tattebsall, 1905, p. 116, pi. 19, figs. 5-7 ; pi. 25, figs. 

 8,9. 



Occurrence. — Northeast coast of the United States : Fish Hawk 

 station 994, latitude 39°40' N., longitude 71°30' W., 368 fathoms, 

 September 8, 1881, 1 female. 



Distribution. — New to the American fauna. This species is prob- 

 ably bathypelagic rather than bottom living, and it is widely dis- 

 tributed in the Atlantic Ocean mainly in temperate and boreal waters. 



METERYTHROPS ROBUSTA S. I. Smith 



Figure 35 



Mysid nearest to Erythrops and Parerythrops Whiteaves, 1874a, p. 4; 1S741d, 



p. 191. 

 Meterythrops robusta S. I. Smith, 1879, p. 93, pi. 12, figs. 1, 2.— Whiteaves, 1901, 



p. 247. — Stephensen, 1913, p. 71 ; 1933, p. 12. — Kindle and Whittakee, 1918, 



p. 252.— Tattersall, 1933, p. 8 ; 1939 b, p. 283. 

 Parerythrops robusta M. Rathbun, 1905, p. 28. 



Occurrence. — East coast of the United States : U. S. Fish Com- 

 mission localities 188, Gulf of Maine, 1878, 1 female; 322, off Cape 

 Cod, 67 fathoms, 1879, 1 adult female; 355, off Cape Cod, 1S79, 1 

 adult male. Speedwell stations 5* and 24* (types and cotypes) iden- 

 tified by S. I. Smith (1879). West coast of the United States: 

 Albatross station 2842, 4 adult females, 2 adult males. 



Distribution. — Except for Stephensen's Greenland records (1913, 

 1933), tliis species was not recorded from American waters after 

 Smith's original records until 1933, in which year I recorded it from 

 the west coast of America, off British Columbia. The record from 

 Albatross station 2842 confirms the occurrence of the species in the 

 Pacific. In 1939 I recorded the species from several localities in the 

 Gulf of St. Lawrence and several localities off the east coast of 

 the United States now extended the range. The bathymetric range 

 of this species appears to be from 33-150 fathoms, and I am unable 

 to trace any record from deeper water than this. 



METERYTHROPS MICROPHTHALMA, new species 



Figure 36 



Description. — This new species is very similar to M. robusta Smith, 

 but differs in the following characters : 



(1) The eye (fig. 36, a) is considerably smaller. It is hardly wider 

 than the basal joint of the antennular peduncle and scarcely as long 



