534 ZOOPHYTA. ESCHARAD^. Hippothoa. 



Gen. LIV. HIPPOTHOA. — Crust adherent, interrupted 

 and reticulated by branching and coalescing chains, formed 

 of lengthened cells, united with each other at the extremi- 

 ties. 



137. H. catenularia. — Cells rounded anteally, tapering to 

 the other extremity, aperture oval. 



Tubipora catenularia, Jameson, Wern. Mem. i. 561 ? — On shells in deep 

 water, not uncommon. 

 This species differs from the Hippothoa divaricata of Lamouroux (Zooph. 82. 

 t. Ixxx. f. XV.), in the superior size and width of the cell at the anterior ex- 

 tremity ; the margin of the mouth is slightly thickened and elevated ; the 

 branches proceed nearly at right angles, issuing from the margin beside the 

 mouth. 



Gen. alec to. — Adherent cells, nearly cylindrical, united 



with each other at the extremities, and disposed in forked 



branches. 



1. A. dichotoma. — Filiform, mouth near the anterior extremity of the cells. 

 Lamaur. Zooph. 84. t. Ixxxi. f 12 — Geol. Eng. 214 — In Oolite. 



FLUSTRAD^. 



Gen. LV. FARCIMIA. — Ramose, branches cylindrical, joint- 

 ed, with cells diverging from the axis. 



138. F.Jistulosa. — Dichotomous, joints lengthened, cylindri- 

 cal, with lozen-shaped impressed cells. 



Bugle coralline, Ellis, Coral. 46. t. xxiii. — Tubularia fistulosa, Linn. 



Syst. i. 1302 Cellularia salicornia. Pall. El. 61 — Cellaria farciminoi- 



des, Sol. Ellis, Zooph. 26. —C. salicornia, Lammiroiu\ Cor. Flex. 126. 

 •—Various parts of the coast, from Devon to Zetland. 

 Height from two to three inches, diameter not exceeding the twentieth of 

 an inch ; the structure is tubular and proliferous ; the spaces between the 

 joints calcareous and brittle, the cells internally are aiTanged round the axLs, 

 sublongitudinally, opening by a small orifice towards the summit of the 

 rhombic impression- Pallas states, as a proof of the i-apid growth of this co- 

 ralline, that he has seen specimens an inch and a half in height, growing on 

 the egg of a shark, containing an immatured foetus. 



