38 REV. B. BOOG WATSON ON THE 



nature minute. In outline it somewhat resembles P. tuherciolata ; 

 in sculpture it has relations with P. craticia and P. acuta, in 

 both respects it may be compared with P. plecta, but is unlike 

 them all, and may be readily recognized by its minute apex. 



10. PuFCTTJEELLA (Fissueisepta) eosteata, Seg. [acuminata, 

 n. sp.]. 



St.24. March25, 1873. Lat. 18° 38' 30" K, long. 65° 5' 30" W. 

 Off St. Thomas, north o£ Culebra Island, Danish "W. Indies. 

 390 fms. Coral-mud. 



Seguenza, ' Pal. Malac, Terr. Terz. di Messina,' p. 10, pi. v. f. 3. 



Shell. — Very small, thin and high, ovate, with slightly im- 

 pressed sides, glassy, dotted in regular oblique-curving lines, 

 with high, blunt, minute glassy tubercles ; the side slopes are 

 high and straight, the front edge faintly convex, the back slope 

 slightly concave ; there is no embryonic apex ; and the slit is a 

 round hole parallel to the base. Sculpture. The surface of the 

 shell is glassy, but is dotted with minute tubercles which are 

 generally parted by more than their own diameter, and run in 

 very regular oblique sweeps parallel to one another. Colour 

 transparently glassy, the tubercles being dead white. Apeai 

 none, the top being slightly bent back and the entire tip re- 

 moved. Slit : a small round hole in the very top, with slightly 

 irregular sides. Margin very thin ; the sides are almost straight 

 or a little bent in, and the breadth is very slightly greater behind 

 than before. Inside quite glassy ; there is no anterior furrow, 

 and the straight concave-edged septum runs far down the shell 

 parallel, and very near to the posterior wall, thus cutting off a 

 long sheath-like process. L. 0-13. B. 0-08. H. 012. 



This is a most exceptional and peculiar little species, quite 

 unlike any other known to me. 



Fam. CoccuLTNiDiE, Ball. 

 Gen. CoccuLiNA, Dall. 



COCCULINA akgulata, n. sp. 



St. 203. Oct. 31, 1874. Lat. 11° 7' N., long. 123° 7' E. Phi- 

 lippines. 20 fms. Mud. 



Shell. — Small, thinnish, with a strongish membranaceous epi- 

 dermis, compressedly patelliform, oval, with a long convex ante- 

 rior slope, a short slightly concave posterior slope, while the 

 compressed side slopes are very steep and very slightly convex ;, 



