346 Mr. H. J. Carter on some West-Indian 



Leiigtli 6j inches, greatest diameter 3^ ; aperture with the 

 canal 3| long, 1^ wide. 



Eah. ? 



This species has lately been purchased by the British Mu- 

 seum, and, although of large size, is apparently undescribed. 

 It is a ponderous sliell, in form not unlike certain species of 

 the genus Fasciolaria, and well distinguished by the character 

 of its sculpture. The uppermost of the spiral ridges forms 

 the thickening beneath the sutural line ; and the two beneath 

 are a little finer than the three others upon the lower convex 

 half of the whorls. 



XXXVI. — Some Sponges from the West Indies and Acapuico 

 in the Liverpool Free Museum described, with general and 

 classijicatory Remarks. By H. J. CARTER, F.li.S. &.c. 



[Plates XI. & Xir.] 



[Concluded from p. 801.] 



Family 2. Suberitida. 



Group Laxa. 



Cliona caribhoia, n. s]). 



Sponge excavating ; appearing on the surface of old coral 

 [Fg rites) in irregularly scattered subcircular holes, varying 

 in size under a quarter of an inch in diameter, which commu- 

 nicate through short channels with cavernous ragged excava- 

 tions interiorly ; channels filled with tubular processes of the 

 sponge, open and marginated at the holes or closed by a per- 

 forated diaphragm, communicating internally with the sponge, 

 which tapestries the cavernous excavations. Texture loose. 

 Colour ochraceous yellow. Vents represented by the open 

 holes ; pore-area by the diaphragms. Spicules of two forms, 

 viz. : — 1, skeletal, pin-like, smooth, curved, consisting of a 

 spherical head followed by a constriction and then a fusiform 

 shaft, about as wide in the thickest part as the head, gradually 

 terminating in a sharp point, length about 95 by 2^-G0()0ths 

 of an inch (PL XII. fig. 26, a) ; 2, flesh-spicule, a spinispi- 

 rula, extremely slender, about 7-6000ths inch long, presenting 

 five or six bends (fig. 26, 5, c) . Size of specimen indefinite and 

 undeterminable, from the internal extent of the excavations 

 being concealed. 



