PLATE CXXXIII. 



SABELLA TUB1FORMIS. 



STRAIGHT TUBE SABELLA, OR SAND SHELL. 

 GENERIC CHARACTER. 



Animal a Nereis, with a ringent mouth, and two thicker tentacula 

 behind the head. Shell tubular, and composed chiefly of sand, agglu- 

 tinated to a membranaceous tube. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell solitary, simple, tube-shaped, straight ; gradually tapering ; and 



composed of brownish sand. 



Sabella tubiformis : testa solitaria simplici tubiformi recta sen- 

 sim attenuata : granis arenaceis fuscis. 



Sabella granulata. Linn. 1268 ? — Martini, 4. /. 4. 28 ? 



Sabella tubiformis. Tube Sabella. Penn. Brit. Zool. 4. 

 sp. 163. 



Straight Sabella. Pult. Hist. Dorset. 



The Sabella tubiformis of Pennant is believed by some concholo- 

 gists to be the same species as Linnaeus names granulata, but this 

 must certainly admit of doubt: the latter, from the description, ap- 



VOL. IV. g 



