ll-l'ACEA. 







The shell of the preceding animals is generally pimply conical, oon- 

 lually upward*, ami tenniiiatiiii: in a vertex. Sonic nther* 

 decline witli les* uniformity and n-^uliirity. ami terminate in dirterent 

 kinds uf reeiirvaturc. 



Tin' character of the preceding animals is also in common corre- 

 spondence. The form of the- Linmx, however, is very variously modified. 

 as well as the tenement wherein it dwells. 



It would be vain to attempt accounting for such diversities, con- 

 sidering that its ductile body may be moulded to almost any form ; and 

 :!iat its expansive and contractile faculty precludes its restriction to 



il space. 



I'ILEOFSIS HUNOARICA Plate VII., Figs. 10, 11, 1 1'. 



Shell nearly circular in the orifice, the diameter of which is about 

 an inch ; summit slightly recurved, obtuse; height about half an inch. 

 -triuted down from the summit. 



Two stout tentacula originate from the head of the animal, with an 

 eye seated on the side of each. They become more slender nearer tin 



inities. 



The animal was very inactive, remaining long stationary. One 

 specimen survived about six month*. 



Pelagic : rare. 



PLATE V 11 



Kin. 10. Piboptit I/tmoarica, animal, under surface. 

 11. Anterior portion, somewhat enlarged. 



I'J. Shrll. 



,\T\. Plate VII.. Pig. 13, 14. 



It is doubtful whether thi< <ul>j(vt he om- in transition to the llal- 

 !-. t. the animals of which its tenant bears much reem- 



lila: 



