161 



This very minute fpecies is at once d'{linp;ni ed from S, 

 lobata by pofleiring iiiucli more numerous, an;l infi-ntely 

 more minute chan.bers, which ire Tnooth and glofiy, and 

 not of that frofled appearance the /o6a/a is invariably found 

 to be, when examined by a microfcope. 



It is a rare fpecies, taken up by the Amphitrite vent'hbrum 

 in the con(h'U(5lion of its tube, which is delcribed in Tejlacea 

 Bniannica as Sabella penicilhs ; but its natural habits are like 

 S. lobata, fixed on Sertidaiite. 



SABELLA, 



It miglit be expecled tliat fome additions were made to 

 this genus fince the publication of tht; former part of this 

 work ; a d it is true we have not been idle in our attention 

 to the fubject, but we muft confefs that, that attentijn has 

 fo fully convinced us of the impropriety ofclallin^v thefe he- 

 terogeneous tubes with Ujiacea, that we fnall not add to thofe 

 aln-adv given, m rely in coiiifibment to the fyflem of our 

 great m iller, lince in the prefent era, the i.nproved cultiva- 

 tion offcience fj imperioufly demands their IVparation; and 

 wear 'glad t(, find that even the more ri^id diiciples of 

 LiNNiEU-s have ventured to adopt this alteration. 



The Sabflla i dependent of iheir beaut'ful inhabitan's are 

 fcarceiy woi'h a place in the cabmet vjf the (Kiturai. •. ; if 

 howcV^r, taey are an object of retention, ih^y ar more 



VV nearly 



