GENERA, SPECIES, &c. 
Spong. 7 
iii some other reactions. The pigment of AEthalium septicum much 
resembles Aplysinofulvin. That of the skin of Holothuria poll is also a 
form of Uranidine. 
The horny fibre of 3 alleged new species from Port Phillip, Glevely, 
and King George’s Sound, in Southern Australia, resembling Aplysilla, 
but not definitely named, is described by R. v. Lendenfeld (11). The 
fibres increase in thickuess with age, but the axial substance is cylindrical 
in old fibres ; in the young fibres it is interrupted by cap-shaped cellular 
masses of granular appearance. The cells appear to be taken in at the 
tip of the fibre, multiply within, and act by dissolving away the horny 
matter, and adding to the axial substance. In one of the species the 
fibre consists of bundles of fibres, which become invested by a common 
coat, and eventually acquire a common axial substance. The young 
fibres of the bundles have no axial substance of their own ; full-grown 
fibre-branches are found to possess one, which is continuous with that of 
the main fibre. 
Spongia officinalis , auctt., from W. Indies. Carter (2) includes the 
Turkey and honeycomb Sponges under ono head, and states that tho West 
Indian and Mediterranean species are identical. 
Spongionclla pulchella. Some bodies described in it as gemmules or 
ovaries by Bowerbank, (1) p. 184. 
Hircinia variabilis. Rose-coloured pigment is described from it by 
Krukenberg, (9) p. 30, table ii. spectra 12-17, as a form of Floridine. The 
watery solution gives an absorption band between D and E (Fraunhofer); 
on addition of ammonia, a second appears at about c 11 D ; on acidification 
the bands unite upon d ; the alcoholic extract and its evaporated residue, 
re-dissolved in carbon disulphide, both give a band extending from 
beyond G to e 16 f. The substance resembles, but is not identical with, 
the colouring matter of Bngula neritina. 
Sarcotragus spino stilus, Schmidt, = Hircinia , (7). Hircinia muscarum , 
Schmidt, is also cited ; Sarcotragus muscarum , id., is evidently the species 
intended. 
Polytlicrses, Duchassaing & Michellotti, is a Hircinia altered by the 
parasite Spovgiophaga, according to Carter, (2) p. 274. 
Spongcli [£] dee. New Family established by Vosmaor, (16) p. 5, for 
Spongelia and a new form described without name, but which in form 
resembles Siphonochalina , and the arrangement of whose fibre resembles 
that of the vascular bundles of twigs and leaf-stalks of many dicotyle- 
donous plants ; the ciliated chambers are oval, and lie in the meshes 
of the skeleton. 
SILICEA. 
MONACTINELLIDA. 
ClIALINIDAS. 
Chalina oculata. Its substance found filled with bristles of Aphrodite ; 
P. Pelsener, Ann. mal. Belg. (3) i. [1881] p. clxxiii. 
Chalinula fertilis , Keller. Vosmaer, Biol. Centralbl. i. p. 104 [1881], 
has hitherto been unsuccessful in his search for spermatozoa in 
