DEEP-SEA PROTOBRANCHIA (BIVALVIA) 



77 



Fig. 124 Yoldiella veletta. Lateral views of two shells from the right 

 side, detail of the hinge-plate of a right valve and a dorsal view of 

 a shell. Specimens form a, Sta. 145, Cape Verde Basin; b & c, 

 Sta. BG VI DS 87, West European Basin; d, Sta. 6701, Canaries 

 Basin. (Scales = 1.0 mm). 



Fig. 126 Portlandia lenticula. Lateral view of a shell from the right 

 side from Sta. S44, West European Basin. An interval view of a 

 right valve with an enlarged detail of the hinge-plate and a dorsal 

 view of a shell. Specimens from North East Atlantic (det. K. 

 Ockelmann). (Scales = 1.0 mm). 



Fig. 127 Portlandia lenticula. Lateral view from the right side of 

 the internal morphology of a specimen from Sta. S44, West 

 European Basin. (Scale = 1.0 mm) for identification of the parts 

 see Fig. 34. 



Fig. 125 Yoldiella veletta. Lateral view from the right side of the 

 internal morphology of a specimen from Sta. 145, Cape Verde 

 Basin. (Scale = 1.0 mm). For identification of parts see Fig. 34. 



specimen of 5 mounted specimens; Paralectotypes BM(NH) 

 1843.7.3.27-30 4 mounted specimens. 



\Nucula lenticula Moller 1842, 17. 

 Portlandia lenticula Sars 1878, 39, tab. 4, Fig. 10a,b; Thiele 



1928, 617; Ockelmann 1958, Fig. 13, pi. 1, Fig. 12. 

 Yoldia (Yoldiella) lenticula Richards 1962, pi. 1, Figs, 23, 24. 



Yoldiella lenticula Dautzenberg & Fischer, 1912, 406; Scar- 

 lato 1981, 209. Fig. 113. 



Material. 



Cruise 



Sta 



Depth No Lat 

 (m) 



Long 



Gear Date 



WEST EUROPEAN BASIN 



Sarsia 44 1739 4 43°40.8'N 



Thalassa 2438 1400 3 48°33.7'N 



3°35.2'W ED 16. 7.67 

 10°15.0'W PBS 26.10.73 



