CYNTHIA ROSEA. 77 



masses ; that on the right side partially within the 

 intestinal loop. 



Length about an inch and a half. 



Hnb. On shells in 10 to 15 fathoms. 



ENGLAND. From the Diamond trawling-ground, 

 twelve miles off Hastings, Sussex (Bowerbank}. 

 First record. Alder, 1863 ; coll. Bowerbank. 



The test of large specimens is somewhat wrinkled, 

 and the warty tubercles are usually of a darker rose- 

 colour than the rest of the surface; they are never 

 crowded, and in young individuals are occasionally 







FIG. 50. Mantle of Cynthia roses. One and one-third natural size. 



entirely absent, when the surface is smooth. The 

 spicula which cover the tubes are close-set and sharply 

 pointed, and give to the surface a minutely-hispid 

 appearance. 



The mantle (fig. 50) is thick, opaque, and fleshy, with 

 the muscular fibres close-set and regularly disposed ; 

 on the inside the fibres are strongly developed, being 

 closely arranged in parallel order. The pallia! pro- 

 cesses are not numerous ; but are unusually large and 

 are irregularly angulated. The tubes are well pro- 

 duced and taper towards the extremity. 



The branchial folds (Plate XXXI, fig. 1) are wide 



