1/6 AUTHORITIES chap, vi 



G. Cuvier, Le Regne animal (ed. Y. Masson) ; Mollusca, Text and Atlas. 

 C. Grobben, Beitriige zur Kenntniss des Baues von Cuspidaria (Xeaera) 



cuspidata Olivi, nebst Betrachtungen iiber das System der Lamelli- 



branchiaten : Arb. Zool. Inst. Wien, x. (1893), pp. 101-146. 

 E. Ray Lankester, Encyclopaedia Britannica, 9th ed., vol. xvi. (1883), Art. 



' Mollusca.' 

 A. Menegaux, Recherches sur la circulation des Lamellibranches marins : 



Besan9on, 1890. 

 K. Mitsukuri, On the structure and significance of some aberrant forms of 



Lamellibranchiate gills : Q. Journ. Micr. Sc, X.S. xxi, (1881), pp. 



595-608. 

 H. L. Osborn, On the gill in some forms of Prosobranchiate Mollusca: 



Stud. Biol. Lab. Johns Hopk. Univ. iii. (1881), pp. 37-48. 

 R. Holman Peck, The structure of the Lamellibranchiate gill : Q. Journ. 



Micr. Sc, X.S. xvii. (1877), pp. 43-66. 

 P. Pelseneer, Contributions a I'etude des lameUibranches : Arch. Biol. li. 



(1891), pp. 147-312. 



