8 
BRITISH SPONGES. 
Halispongia ventilabra, Blainv. Actin. 533. 
Spongia Zetlandiea, Jameson in Wern. Mem. i. 561. 
Spongia xerampelina, Grant in Edin. Phil. Journ. xiv. 116. 
Ling Hoods, Zetlanders. 
a. Brit. Sp. t. 7- Presented tty G. Johnston, M.D. 
b. Spicula of a , in Canada balsam. Prepared by J. S. Bower- 
bank, Esq. 
Var. /3. Johnst. Brit. Sp. 107- 
Spongia Seypha, Montagu in Wern. Mem. ii. 107. pi. 15. fig. L 
Sp. foliascens. Gray , Brit. PI. i. 359. 
c. Halichondria. 
12. Halichondria simulans. 
Plalicbondria simulans, Johnston , Brit. Sp. p. 109. t. 8, p. 206. 
Yar. a. Erect, irregularly branched (Brit. Sp. figs. 1, 2). 
Yar. /3. Creeping, ramose or nodulous (fig. 3). 
Halispongia reptans, Scouler MS. 
Yar. y. Papillary (Brit. Sp. fig. 4). 
Yar. d. Massive (Brit. Sp. fig. 5). 
a. Branched. Dublin, Dr. Scouler. Presented by G. John- 
ston, M.D. 
b. Branched, Brit. Sp. t. 8. f. 1. Dr. Scouler. Presented 
by G. Johnston, M.D. 
c. Branched, Brit. Sp. t. 8. f. 2. Dr. Scouler. Presented 
by G. Johnston, M.D. % 
d. Branched. Dr. Scouler. Presented by G. Johnston, M.D. 
e. Clavate, Brit. Sp. t. 8. f. 1. Dr. Scouler. Presented by 
G. Johnston, M.D. 
/. Tuberose, Brit. Sp. t. 8. f. 1. Dr. Scouler. Presented by 
G. Johnston, M.D. 
g. Spicula of a, in Canada balsam. Prepared by J. S. Bower- 
bank, Esq. 
13. Halichondria cinerea. 
Spongia cinerea. Grant in Edin. New Phil. Journ. ii. 204. pi. 2, 
fig. 3 (the spiculum), copied in Blainv. Actinol. pi. 94. fig. 3. 
Halichondria cinerea, Flem. Brit. Anim. 521 ; Johnston , Br. Sp. 
p. 111. t. 4. figs. 4, 5 (spicula, 246). 
Spongia cserulea Risso, UEurop. Merid. v. 373?; Belle Chicje , 
Anim. s. Vert. Nap. iii. 113. tav. 37. fig. 11 ? 
Spongia pulverulenta, Scouler MS. 
a. (Dublin Bay?) Presented by G. Johnston, M.D. 
5.? On a rock, Scarborough, W. Bean. Presented by G. 
Johnston, M.D. 
c. fy e. ? Presented by G. Johnston, M.D. 
f. Spicula of a , in Canada balsam. Prepared by J. S. 
Bower bank. Esq. 
