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^ AVern. Mem. i. 561 ? — On shells in deep 
water, not uncommon. 
This species differs from the Hippothoa divarioata 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. ALECTO.- — Adherent cells, nearly cylindrical, united 
with each other at the extremities, and disposed in forked 
branches. 
1. A. dichotomy. — Filiform, mouth near the anterior extremity of the cells. 
Lamour. Zooph. 84. t. Ixxxi. f. 12 — Geol. Eng. 214 — In Oolite. 
FLUSTRAD^. 
Gen. LV. EARCIMI A.— Ramose, branches cylindrical, joint- 
ed, with cells diverging from the axis. 
138. Dichotomous, joints lengthened, cylindri- 
cal, with lozen-shaped impressed cells. 
Bugle coralline, Mlis, Coral. 46. t. xxiii.— Tubularia fistulosa, Linn. 
Syst. i. 1302.— Cellularia salicornia, Pall. El. 61.-— Cellaria farciminoi- 
des, Sol. Ellis^ Zooph. 26.— C. salicornia, Lamouroua,\ 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 ceils internally are arranged round the axis, 
sublongitudinally, opening by a small orifice towards the summit of the 
rhombic impression, Pallas states, as a proof of the rapid 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 imraatured fcetus. 
