238 APPENDIX. 



Sponge in a dried state, of a brownish-yellow colour. 

 In shells of Pectuncuhis pilosus. Isle of Man (Mr. 

 Alder). 



9. Cliona lobata, HancocJc. 



Cliona lobata, Hancock. L. c, vol. iii, p. 341, pi. xii, figs. 4 and 



8 ; vol. xix, p. 11, pi. vii, fig. 6. 

 Pronax lobata, Gray. Proc. Zool. Soc, 1867, p. 526. 



Spicula of two kinds, the first spinulate, xo^tli of 

 an inch long, not very slender, mostly a little bent, 

 and brought gradually to a sharp point at one end, 

 the other with an irregularly rounded head, sometimes 

 slightly elliptical, and generally not exactly terminal : 

 the second cylindrical, Too^th of an inch long, rather 

 stout, arched and zigzagged, being six or seven times 

 angulated ; it is strongly spined, particularly at the 

 angles ; the extremities are obtuse. 



The dried sponge is of a dark snuff coloui;. 



In shells of Haliotis tuberculata from Guernsey, and 

 in an oyster from the West of Scotland. 



0. Yaeious British Sponges. 



1. Halisaeca Dujaedinii, Johnston. 



Halisarea, Dujardin. Ann. des Sci. Nat., n.s., vol. i, p. 7, pi, i, 



fig. 5. 

 Balisa/rca Biijardinii, Johnston. Brit. Spong., 1842, p. 192, pi. 



xvi, fig. 8. 

 Halisarea Dujardmii, Carter. Ann. Nat. Hist., ser. 4, vol. xii 



(1873), p. 26 ; and vol. xiii (1874), p. 315. 



