28 A MONOGaAPH O? THE 



the same size and proportions, and not exceeding five lines 

 in length and a hne and a half in diameter. 



Genus — Letjcosolenia, Bowerbank. 



1. Leucosolenia botryoides, Bowerbank. 

 ' 2. — contorta, Bowerbank. 



3. — lacunosa, Bowerbank. 



4. — coriacea, Bowerbank. 



1. Leucosolenia botryoides, Bowerbank. 



Gkantia botrkoides, Fleming. 

 — — Johnston. 



Spokgia — Mlis and Solander. 



Sponge. Arborescent, cylindrical, slightly pedicelled ; 

 parietes very thin ; surface smooth. Cloaca very 

 large, armed internally with spicnlated equiangular 

 triradiate spicula ; spicular ray large and long, slightly 

 curved ; mouths of cloaca one or more, terminal, 

 simple, and unarmed. Oscula and pores inconspicu- 

 ous. Spicula of skeleton equiangular, triradiate; 

 radii somewhat short and stout, rapidly attenuating. 



Colour. — White. 



Habitat. — Parasitical on fuci and zoophites, coasts of 

 Great Britain, abundantly, littoral and to 8 or 10 fathoms. 

 Escamined. — Alive. 



I have found this species abundant in eight or ten 

 fathoms at Weymouth Bay, Tenby, Torbay, and in many 

 other locaUties where I have dredged, and it is usually para- 

 sitical on small fuci, along with Grantia compressa and 

 ciliata. When placed in a cell in a little somewhat turbid 

 sea water, with a power of 150 linear, the excurrent streams 

 are generally seen pouring forth strongly and steadily from 

 the mouths of the cloaca. 



Tufts of this species are frequently found exceeding an 



