STYELA VIOLACEA. 125 



15. Styela violacea (Alder). 



(PL XXXVII, figs. 16 and 17; PL XXXIX, figs. 



10-12.) 



Cynthia violacea ALDEE in Ann. Nat. Hist. (3) XI [1863], 

 p. 165, [and in Rep. Brit. Assoc. for 1866 (1867), p. 208]. 



Body very much depressed or nearly flat, transversely 

 ovate or rounded in outline, and adhering by a broad 

 expanded base. Test slightly hispid and completely 

 covered with small grains of sand. Apertures on rather 

 long and slender tubes of a violet colour, set very little 

 apart, and nearly equally distant from both ends. 



Diameter a quarter of an inch. 



Hab. Amongst rocks, on an old shell of Pecten 

 maximus. 



WALES. Anglesey, in Menai Straits (Mrs. Hughes). 

 First record. Alder [1863] ; coll. Mrs. Hughes. 



Although, from its minuteness and delicacy, the 

 internal parts of this species could not be examined, 

 there can be little doubt of its distinctness from any 

 other described Sti/ela. The grains of sand adhere so 

 closely that they can scarcely be removed without 

 tearing the test, which is very thin. Two specimens 

 were found. 



16. Styela fibrillata sp. nov. 



(PL XXXVII, fig. 18; PL XXXVIII; PL XL, fig. 9; 

 PL XL1V, figs. 1-3 ; and figs. 77 and 78 in text.) 



P>ody suborbicular or ovate, covered with long, 

 slender, or tufted fibrils, occasionallv anastomosing. 



v O J 



and coated with fine sand, free or very slightly 

 attached. Test (PL XXXVII, fig. 18; PL XXXVIII, 

 fig. 1 ; PL XXXIX, figs. 13 and 14) rather tough, 

 shining inside. Apertures not far apart. Man fir 

 yellowish, inclining to orange, but probably more or 



