i£48 NAUTILUS. SAIL-SHELL. Class VI. 



CRASStf- Lin. Tr. vlil 117. Monf. Test, Br. ig\. id. 



^^^' Snp.79.t.m.f.2. 



* N. with a thick shell, umbilicated on both 

 sides ; joints marked with lines ; minute. An 

 inhabitant of salt water. 



Exceedingly rare. From Recidvei\ 



10- iOEATU- Serpuk Nautiloides. Gm. Lin. Serpula lobata. Mont. Test. 

 Lin. Tt. \iii. i 1 7« 



* N. with a shell rather plane, confluent, verru- 

 cose, spiral ; septa very delicate, and half-moon- 

 shaped ; minute. 

 Inhabits the sea. 



**' Longish, and somewhat strait. 



li. ssMJLi- ^'•'^- ■^"^- 3372. Mont. Test. Br. 19G. id. 



Tcus. Lin. Tr.y'ni. 118. Slip. 80, i. lQ.f.3. 



^ N. with a strait shell, the end spirally bent, 

 spires contiguous; minute; inhabits the sea. 

 Saudiiich and Skeppy island. 



