TANAIDACEA AND ISOPODA— TATTERSALL. 223 



Station 331, off Cape Bird Peninsula, 250 fathoms, bottom fauna, one specimen, 

 7 ■ 5 mm. 



Cumberland Bay, South Georgia, collected by P. Stammwitz, December, 1913, 

 eight specimens, 2-10 mm. 



Genus DYNAMENELLA, Hansen, 1905. 



30. Dynamenella eatoni (Miers). 



Dynamene eatoni, Miers, 1875, p. 73 ; Miers, 1879, p. 203, pi. XI, fig. 2. 

 Dynamenella eatoni, Hansen, 1905 (1), p. 125 ; Vanhoflfen, 1914, p. 515. 



Occurrence. — Cumberland Bay, South Georgia, December, 1918, collected by 

 P. Stammwitz, two males. 



Remarks.— TYlq specimens are both apparently immature, and measure 1 1 mm. and 

 13 "5 mm. Though the male appendages on the seventh thoracic somite are present 

 and well developed, the stylet on the second pleopods is not yet visible externally. 

 Chilton (1909) has already called attention to the close similarity between this species 

 and D. huttoni (G. M. Thomson). 



Genus CASSIDINOPSIS, Hansen, 1905. 



31. Cassidinojjsis emarginata (Guer.). 



Oassidina emarginata, Guerin, 1843, p. 31 ; Cunningham, 1871, p. 499, pi. LIX, fig. 4 ; Miers, 

 1879,. p. 204; Studer, 1884, p. 19; Pfefier, 1887, p. 103, pi. II, figs. 9, 10, pi. V, 

 figs. 23-30, pi. VI, figs. 1-10; Stebbing, 1900, p. 562. 



Cassidinopsis emarginata, Hansen, 1905 (1), p. 128 ; Stebbing, 1914, p. 351 ; Vanboffen, 

 1914, p. 514. 



Gassidina latistylis, Dana, 1852, p. 784, pi. LII, figs 12a-e. 



Occurrence. — King Edward Cove, S. Georgia, November, 1913, collected by 

 P. Stammwitz, fifteen specimens. 



Remarks. — The largest male specimen measured 32 mm. in length and 21 mm. in 

 breadth; the largest female, 22 mm. long, 11 mm. broad. This difference in the 

 relative proportions of the sexes has already been commented on by Studer, Miers, and 

 Vanhoffen. The stylet on the second pleopod of the male is a little longer than 

 the rami. 



Genus EUVALLENTINIA, Stebbing, 1914. 



Vallentinia, Stebbing, 1914, p. 351. 

 nee Vallentinia, E. T. Browne, 1902 (Medusa). 

 „ Vallentinia, Norm, and Scott 1906 (Gopepoda). 



Stebbing instituted this genus in 1914, on the recommendation of Hansen, for the 

 species previously known s,sSynamene clarwiniii Cunningham, or Cymodocea darivinii, 

 Cunningham. Finding that the name he originally proposed, Vallentinia, had been 



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