BRITISH SPONGES. 
11 
e. On Sertularia falcata. Liverpool, J. Hylands, Esq. Pre- 
sented by G. Johnston, M.D. 
/. On Conferva. Craigorad, Ireland, W. Thompson, Esq. 
Presented by G. Johnston, M.D. 
g. Crustaceous var. Presented by G. Johnston, M.D. 
h. Spicula of a, in Canada balsam. Prepared by J. S. 
Bowerbank, Esq. 
18. Halichqndria incrnstans. 
Alcyonium incrnstans, Esper, Alcyon. 1. 15; Lara. Anim. s. Perf. 
if. 397, 2nd edit. ii. 603 ; Lamour. Cor. Flex. 340, Corail. 244. 
Halichondria incrnstans, Johnst. Brit. Spon. p. 122. t. 12. fig. 3, 
and 1. 13. fig. 5, p. 247- . T} . T}l 
Spongia fava, Montagu in Wern. Mem. n. 115; Gray , Brit. FI. 
i. 360. _ ... 1A . . 11Q 
Spongia panicea, Grant in Edin. P Ml. Journ. xrn. 104, xiv. 11 , 
and in Edin. New Phil. Journ, i. 347, ii- 128,138. pi. 2. figs. 4, 24, 
27—29, copied in Blainv. Actinol. pi. 94 ; not Pallas. 
Halichondria panicea, Flem. Brit. Anim. 520; not Johnst. 
Halispongia panicea, Blainv. Actinol. 532. not robust. 
h. Branched. Presented by G. Johnston, M.D. 
c. “ Spongia fava, Mont.” Presented by G. Johnston, M.D. 
d “ Hal. panicea, Flem.” Presented by G. Johnston, M.D. 
e . « Hal. panicea, Flem.” Brit. Sp. 1. 12. f. 3. Presented by 
G. Johnston, M.D. 
g f h. Mass with dry mucus. Presented by G. Johnston, 
i. Mass, washed. Presented by G. Johnston, M.D. 
j. Spicula of a , in Canada balsam. Prepared by J. b. 
Bowerbank, Esq. 
19. Halichondria saburrata. 
Halichondria saburrata, Johnst. Br. Sp. p. 121. 1. 11. fig. 3, p. 197 - 
247 
a. Br. Sp. t. 11. f. 3. Presented by G. Johnston, M.D. 
b. Presented by G. Johnston, M.D. 
c. Spicula of a, in Canada balsam. Prepared by J. b. 
Bowerbank, Esq. 
20. Halichondria eegagropila. 
Halispongia segagropila, Scouler MSS. „ , 9zlQ 
Halichondria segagropila, Johnst. Br. Sp. p. -H9. t. ll^f. , P- -yy • 
a. With animal matter, Br. Sp. t. 11. f. L Dublin, Dr. 
Scouler. Presented by G. Johnston, M.D. 
b, c. Washed. Ireland ? Presented by G. Johnston, M.D. 
d. Spicula of a, in Canada balsam. Prepared by J. b. 
Bowerbank, Esq. 
