MOLLUSCA. 



VI.-PTEEOPODA. 



BY SIR C. ELIOT, K.C.M.G., LL.D. 



(2 Plates.) 

 THK Pteropods collected by the ' Discovery ' comprise the following species : 



. 



Qiumtitv. 



Locality. 



1. Limaeina antaretiea. Woodward 



2. Limarina retrotvrta* (Fleming) 



3. Clio tulettia (Pfeffer) . 



4. Clioiu atttarclteo, E. A. Smith 



5. Spenyiobranchata aurtralu, D'Orb. 



Numerous 



Winter Quarters, and tlie region about 

 Nut. 61, Long. 140 E. 



Moderately abundant From Long. 95 43* W. to Long. 178 33' 

 E., ami from Lat. 55 to I*t. 61 8. 

 None from Winter Qnartcn. 



Two specimens and 

 Rome fragment* 



Numerous 

 Fire specimens 



la*. 68 04' 8., Long. 175 43' 8. 



Winter Quarters. 



Winter Quarters and Lat. 55" 31' 8., 

 Long. 156 19' E. 



Winter Quarters wen in Lt. 77 49* 8., Long. 167" 7' 4" E. 

 Some naturalist* might regard the formi here called Limaeina rttroverta ai at leait two dirtlnct cpeciei. 



Though L. antarctica and Cl. antarctica are represented by numerous specimens, 

 ami clearly are enormously more abundant than the other species, the quantities 

 contained in each tube suggest that they do not occur in such great shoals as the 

 northern forms. 



I received the specimens in two consignments, described respectively as Pteropods 

 and Pteropods from the Plankton. The former, it would seem, were taken out of 

 holes cut in the ice ; the latter in the open sea. In most of the tubes 'the Pteropods 

 are mixed up with other forms, such as small crustaceans, larvae of Lamellariidaj, and 

 a globular gelatinous mollusc (probably Lamtllaria mollis, E. A. Smith). In the 

 majority of specimens the soft parts are well preserved, but the fragile shells are not 

 only broken, but partly dissolved by the fluid in which the animal has been kill-l 

 or kept The number of perfect shells in the collection is small. 



In the above table I have entered Litnacina antarctica and Cliane antarctica as 



c 2 



