28G Mr. II. J. Carter 07i some West-Indiayi 



and pustuliferous (PI. XI. fio;. 1), Consistence soft, friable. 

 Colour faint wliite-yellow. Hurface uniformly smooth, except 

 where interrupted by the presence of little conical pustules 

 puckered towards the apex (tig. 1, a a and h). Vents and 

 pores respectively in the pustules, Avhich are irregularly 

 and plentifully scattered over the surface. Internal struc- 

 ture soft, compact towards the centre, becoming less so to- 

 wards the circumference, where tiie pointed ends of the spicules 

 penetrate tlie crust of the surface, but do not extend beyond 

 it. Spicules of five forms, viz. : — 1, skeletal, long, acuate, 

 curved chiefly towards the blunt end, gradually sharp-pointed, 

 spined chiefly towards the base, less so afterwards, 90 by 

 4-6000ths inch in its greatest demensions (fig. l,c) ; 2, short, 

 acuate, curved chiefly towards the blunt end, which is some- 

 what inflated, gradually sharp-pointed, spined throughout, 

 spines towards the pointed end recurved, longest sj^ines round 

 the blunt end, about 45 by 4-6G00ths inch in its greatest dimen- 

 sions (flg. l,e); 3, subskeletal, acuate, smooth, slightly 

 curved, fusiform, head smaller in its transverse diameter tlian 

 the shaft, which terminates gradually in a sharp point, about 

 90 by 2i-6000ths inch in its greatest dimensions (flg. 1, c/) ; 

 4, flesh-spicule, equianchorate " angulate," very short and 

 robust, shaft very much curved, arms thick, broad, and 

 much expanded, about a quarter the length of the shaft, 

 7-6000ths inch long, shaft U-GOOOth inch in diameter 

 (fig. 1,./); 5, flesh-spicule, bihamate, simple, sigmoid, and C- 

 shaped, 10-6000ths inch long (flg. 1, g). Nos. 1 to 3 are con- 

 fined to the axis and body ; no. 4, in great abundance, forms 

 a thick crust which is supported on the points of no. 1, while 

 no. 5 is comparatively scanty. Size of specimen about 3 inches 

 long, largest stem about 1 inch in diameter at the base ; pus- 

 tuliform eminences about 1-1 2th inch in diameter at the base, 

 and about half as high, but very variable. 

 Hah. Marine, 50-70 fathoms. 



Luc. Sea between Patagonia and the Falkland Islands. 

 Ohs. This sponge, dredged by Capt. W. H. Cawne Warren 

 in the locality mentioned, is a species of Ilalichondria, allied, 

 although considerably different in the form of its spicules, to 

 Ilalichundria iiicriistiiiis. It is clueHy characterized by the 

 presence externally of the little ])u.stuliforui eminences men- 

 tioned, which may be assumed to be the localities respectively 

 of the verits and the pore-areas, since there is nothing else on 

 the surface to represent these j)arts. At first they look very 

 much like the insulated parasitic poly])S Z/c/yy/a ; but being- 

 conical, closed, and ])uckered towards the apex, instead of 

 open, cup-like, and shallow, connected with a canal beneath 



