SYSTEMATIC AND BIOLOGICAL ACCOUNT 141 



On 8 June 1952, after the completion of this report, 'Discovery II' took two even more perfect 

 specimens of Heteropyramis metadata together with two 'spotted' eudoxids at Station 2927. The 

 accompanying Text-fig. 71 of one of these nectophores shows the very close similarity between 

 nectophores of this species and those of Thalassophyes crystallina. In fact the only significant difference 

 seems to be in the presence or absence of the spots. The distribution of opaque spots on the two 

 eudoxids is as follows : an apical spot on the bract, a spot at the base of each dorso-lateral ridge of the 

 bract, and a spot at each end of the two dorso-lateral ridges of the gonophore. 



Thalassophyes crystallina Moser, 1925. (Text-fig. 72.) 



Moser (1925) described this species from two anterior nectophores only, one from 2000 m., at 

 ' Gauss ' Station in the Antarctic, and the other from an unknown locality. It has not been recorded 

 since except by Leloup (1934c), who identified one anterior nectophore taken at 'Meteor' Station 56, 

 from a depth of between 800 and 600 m., to the north-west of South Georgia. It occurred at 

 'Discovery II ' Stations 1568, 1585, 1588 and 1589, in the Indian Ocean. At Station 1585 it occurred 

 in a closing-net haul made between 1400 and 700 m. ; at Station 1588 in a closing-net haul made between 

 500 and 200 m.; and at Station 1589 in two open hauls from 600 m. to the surface. Since this is 

 a little-known species, I give all the other unpublished records that I have accumulated : 



'Discovery' Stations, closing-net hauls, iooa (625-675 m.); 100c (450-550 m.); 102 (750-500 m.); 

 107 (1000-750 m.). 'Discovery IV 300 (1000-750 m.); 311 (500-250 m.); 343 (500-250 m.); 344 

 (500-250 m.); 357 (750-500111.); 661 (750-500, 1000-750111.); 663(750-500, 1000-750, 1 500-1000 m.); 

 666 (1000-750 m.); 671 (1500-1000, 2000-1500 m.); 1617 (395-155 m.); 1624 (350-210 m.); 1627 

 (580-400 m.); 1633 (1100-875 m.); x ^39 (2400-1 150 m.); 1723 (800-500 m.); 2024 (650-400 m.); 

 2636 (950-550 m.); 2639 (1200-600 m.); WS 26 (1000-750 m.); WS 36 (750-500 m.). 



Anterior nectophores have been taken in closing-net hauls: 



