233 



MOLLUSCA. 



PART IV. ANATOMY OF PELECYPODA.* 

 BY R. H. BURNE, M.A., 



Physiological ('unitm-. l!<>i//il Collfije <>f Suriji-mi 



WITH FOUR PLATES. 



PAGE 



I. Introduction .......... 



II. List of Stations -'" 4 



III. List of Species Investigated . . 234 



IV. Anatomical Descriptions . . . . . . . . -">"> 



V. List of References . 255 



Index 256 



I-INTRODUCTION. 



THK animals whose anatomy forms the subject of this Report fall wilhin ten 



live Itclongiug to the sub-order Aivacca. and one each to the sub-orders I'ectinacca, 



Ostraeacea, Submytilacea, Veneracea and Anatinacea. 



Of these ten genera six, namely, Lixxurcn, A/lin-nnn'ii, A,/////W.v and Philobrya, of 

 the sub-order Arcacea, arid Lin/nt/iln and Ainif/i/n, were obtained in the Antarctic in 

 the region of ^[(-"Murdo Sound, and with the exception of Anuf/iKt \vere di-eilgcd from 

 considerable depths, varying from 50 to 250 fathoms. 



The rest of the specimens were collected off New Zealand (Chlamys, Venerlcardia , 

 t'liionr}. or from S. Trinidad Island (Barbatia). 



The condition of the tissues was, in almost every case, remarkably good, especially 

 when one considers the surroundings amidst which the work of preservation had to Ke 

 done. 



* Manuscript rei-i'hrd < irtnljcr G, 1919 | S. !'. II.]. 

 VOL. n. - o 



