222 THE THREE-HEADED CORYNE. 



siderably protruded from the cell, below the diver- 

 gence of the tentacles. The great circular aperture 

 on the upper surface, appears to have a rim. (See 

 fig. 4). 



June iSth. A week old: no material alteration 

 from last record. I found, however, the next day a 

 gemmule represented at fig. 5, which perfects the series. 

 It was in a state intermediate between figs. 1 and 2. 

 Its length is ^th inch. The edges are pellucid, and 

 have an appearance of radiating fibres. The redness 

 is curdled, but not wholly separated. This continued 

 for several days, the red mass slowly concentrating • 

 but no spines appeared ; and at length I fear it was 

 broken accidentally ; granular matter came out, leav- 

 ing a glassy cell attached to the side of the vessel. 

 The species was probably Lej)ralia coccinea ; but 

 eight spines are more than are ascribed to any of 

 our species. 



THE THREE-HEADED CORYNE. 



Jime 18. — In the gla.ss jar that contains Actiniae, 

 &c., that I brought from Torquay, I found on the 

 Memhranipora, a very young specimen of Pobjcera 

 ^-lineata, about |- inch long : very pretty. Some of 

 the cells of the polype appeared to have been recently 

 gn-awed, probably by this little mollusk. 



In the same vessel I found another species of 

 Coryne. (Plate XIV, figs. 4 — 6). It is sessile on a 

 decaying frond of some Alga, about g^inch in height 

 in medium extension, with no appearance of tube. 

 The polype is sub-cyhndrical, slightly clavate, round- 



