PROF. THOMSON AND MR. McQURFEN—REPORT ON THE ALCYONARIANS. 72 
The spicules of J/opsea are described as “ finely-spined, unsymmetrical 
scales, slightly notched at the edge ; the spicules of Clathraria are spiny and 
tuberculate clubs, warty double-clubs, and spindles with very minute warts.” 
For these and other reasons we think that Clathraria may be usefully 
retained as a distinct genus. 
PRovIsionAL List or RED SEA ALCYONARIANS. 
Those included in Mr. Crossland’s collection are marked with an asterisk. 
The names in square brackets indicate the authorities for occurrence in the 
Red Sea. In other cases the authority for the species is also the authority 
for its occurrence in the Red Sea. 
Order I. STOLONIFERA. 
*Clavularia pulchra, Thomson & Henderson. 
Clavularia strumosa, Ehrenberg. 
Clavularia glauca (Savigny ). 
*Sympodium fulvum, Forskil [Klunzinger] [Kiikenthal] = (according 
to Kiikenthal) Aleyoniwm fuleum (Korsk.). 
Sympodium ceruleum, Ehrenberg. [Klunzinger] [| Kiikenthal ]. 
/ Sympodium fuliginosum, Ehrenberg 
Anthelia uléginosa (Ehrb.) [hearing 
[ Kiikentaal | = (according, 
to Kiikenthal) : 
Sympodium purpurascens, Hhrenberg 
' Klunzinger]. 
Anthelia glauca (Ehrb.) [ Klunzinger ]. 
Anthelia strumosa (Khrb.) [Klunzinger }. 
*Tubipora purpurea, Pallas | Klunzinger |. 
Tubipora hemprichi, Ehrenberg [| Klunzinger |. 
Order I]. ALCYONACEA. 
* Xenia umbellata, Savigny | Klunzinger | [ Kiikenthal]. 
* Xenia fuscescens, Khrenberg | Klunzinger | [ Kiikenthal ]. 
*Xenia cerulea, Hhrenberg [ Klunzinger |. 
Xenia blumi, Schenk [| May ]. 
* Alcyonium spherophorum, Ehrenberg [ Klunzinger |. 
Alcyonium globuliferum, Klunzinger. 
Alcyonium digitulatum, Klunzinger. 
Alcyonium pachyclados, Klunzinger. 
Alcyonium brachyclados, Klunzinger. 
Aleyonium polydactylum, Dana | Klunzinger |. 
Alcyonium leptoclados | Klunzinger |. 
Alcyonium gyrosum, Klunzinger. 
