CONCHOLOGY. 



PLATE CXVIIT. 

 PECTINARIA GUILDINGIl 



GUILDING'S PECTINARIA Iio bm: 



SABELLA LINN. 

 Univalve. 



Amphitrite.— ^m. Pectinaria. Lamarck. 



GENERIC CHARACTER. 



Pectinaria. Shell conic, subcylindrical, single, or detached, and 

 composed of sandy particles and broken shells, agglutinated 

 together by means of a membranaceous or papyraceous cement. 

 Animal large and obtuse in front, tapering gradually, and 

 becoming pointed behind ; front with two brilliant gold-coloured 

 pectinated tufts : mouth lengthened, bilabiate, and surrounded 

 with numerous short tentacula, and four tufted branchiae behind' 

 upon the second and third segment of the body. On each side 

 of every articulation of the body, a setiform gland ; the bristles 

 short and fasciculate. 



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