R. W. H. ROW—REPORT ON THE SPONGES : CALCAREA. 185 
CLATHRINA TENUIPILOSA (Dendy). 
Synonymy :— 
1905. Leucosolenia tenuipilosa, Dendy (3). 
1908. Lewcosolenia canariensis, Thacker (18). 
This species is by far the most abundant of the Homoccela in the collection, 
having been obtained at Suez growing on mud; from Beacon Island, Khor 
Dongola, on millepore-reef ; from Agig Harbour, from mud in 43 fathoms ; 
and from the coral-reef at Engineer Island, Khor Dongola. 
Like the preceding species, it was considered by Thacker (18) to be only 
a variety of Clathrina canariensis on the strength of the similarity of the 
tri- and quadriradiates ; but it seems to me that the presence of oxea of such 
unusual and constant form, being very long and extremely slender, should 
undoubtedly separate it specifically from forms where oxea are entirely 
absent, even though the number and frequency of the oxea may show very 
considerable variation as they do in Thacker’s specimens. 
Distribution. Ceylon, Red Sea, Cape Verde. 
Grade HETEROC(ELA, Poléjaef’. 
Family Sycrettip &, Dendy. 
Sycon coronatum (Lillis 5 Solander). 
Synonymy :— 
1786. Spongia coronata, Ellis & Solander (4). 
1821. Seypha coronata, Gray (7). 
1864. Grantia ciliata, Bowerbank (1). 
1867. Spongia coronata, Grant (5) 
1872. Sycandra coronata, Haeckel (8). 
Sycon ciliatum, | 
Grantia ciliatum, 
mult. auct. 
A single very small specimen measuring only 8 mm. to the top of the 
oscular fringe, of which length this fringe comprises 4 mm., and with a 
horizontal oscular collar 4 mm. in diameter, was obtained, from a locality not 
stated. 
Distribution. Cosmopolitan. 
Sycon RAPHANUS, O. Schmidt. 
Synonymy :— 
1862. Syeon raphanus, O. Schmidt (15). 
1867. Grantia raphanus, Gray (6). 
1872. Sycandra raphanus, Haeckel (8). 
A single small specimen was obtained from the dock-wall at Suez. 
Distribution. Cosmopolitan. 
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