44 
The following Species are figured in the accompanying Plates, and, 1 believe, have not 
been hitherto described. 
Tf.llinides rosea. — Shell ovate, thin, finely striated transversely, rose-coloured, with a 
yellowish tint at the umbones, sometimes nearly white ; the anterior side rather 
angular, the posterior rounded; two whitish slightly raised ribs in each valve ex- 
tend from the hinge nearly to the superior margin. 
Locality unknown, supposed to be from the Indian Ocean. 
Aplysia radiata.— Shield or cartilage sub-elliptical, smooth, of a pale green, and rayed 
with a deeper tint of the same colour ; very thin at the rounded side, and a small 
curved callosity at the other. 
Locality unknown. 
Spirolina clavata. — Shell club-shaped, sub-cylindrical; chambers numerous and finely 
striated longitudinally. 
Inhabits the coast of the Adriatic. 
Miliola ovata. — Shell ovate, white, smooth, rather flat; margins acute. 
Inhabits the British coast, on fuci, &c. 
