708 
Proceedings of the Royal Society 
Report on the Sponges. By Professor Franz Eilhard Schulze. 
Station No. 2, July 29, 1880; 275 fathoms. 
(1) Two medium-sized specimens of Tisiphonia agariciformis, 
Wyville Thomson ( Depths of the Sea, p. 74). 
(2) An irregularly triangular flattened disc about 15 square 
centimetres in area and 2 ‘5 mm. thick, flexible, and of the consistency 
of leather. One edge is irregularly torn, the two others are rounded 
off smoothly : the latter evidently represent the free margin in its 
normal condition. The surface on both sides exhibits a system of 
round pit-like depressions about 1 mm. broad, between which is left 
a level reticulate lattice-like network of trabeculae, which also have 
a thickness of 1 mm. Large numbers of short siliceous spicules 
occur, pointed at one end and blunt at the other ; they are united 
into a loose skeleton of tri- or quadri-lateral meshes by an extremely 
small amount of horny substance, and are all of the same form and 
size. Thus the sponge under notice is a Reniera (in the broad 
sense of the word). The species was hitherto unknown. 
(3) A coarsely woven mass of siliceous spicules made up of long 
rod-like and abundant smaller quinque- and sex-radiate forms ; it was 
probably derived from a Holtenia. 
Station No. 3 ; 53 fathoms. 
Tetilla Cranium, Mull. 
Station No. 7 ; 530 fathoms. A packet of long tuft spicules from 
a Hexactinellid, most probably a Holtenia. 
Station No. 8 ; 540 fathoms. Several examples of Stylorhiza 
stipitata , Oscar Schmidt ( Sponges of the Gidf of Mexico, p. 79), a 
species identical with Polymastia stipitata , Carter {Annals of Nat . 
Hist., 1876, ser. 4, vol. xviii. p. 393.) 
Besides adults, young forms also occur, which exhibit a roundish 
head. 
Report on the Foraminifera. By Henry B. Brady, F.R.S. 
This Report was received by the late Sir C. Wyville Thomson, 
in November 1880. 
Sea-bottoms. — Specimens of the sea-bottom from five localities 
have been examined and the Foraminifera determined. Particulars 
