86 One Thousand Objects 



spines on the lower. On stones and shells. (PI. VIII., 

 %. 4-) 



667. MEMBRANACEOUS CORALLINE (Membranipora niem- 

 branaced). Forming a greyish-white crust on stones near 

 low water-mark. Cells ovate, with a blunt, hollow, coni- 

 cal process at the summit of each. (PL VIII., fig. 6.) 



668. HAIRY CORALLINE (Membranipora pilosd). En- 

 crusting, following the shape of the object it grows upon. 

 Cells short, tubular, with large roundish openings ; toothed 

 at the margin, and a long tubular bristle near the mouth. 

 On seaweeds, &c. (PL VIII., fig. 7.) 



669. CREEPING STONY CORALLINE (Cellularia scruposa). 

 Creeping, often covering a space one inch square; 

 branches diverging, forked. Mouth of the cells oval, 

 regular. On each side of the cell in front are two slender 

 spines. On zoophytes, shells, seaweeds, &c. 



670. CREEPING CORALLINE (Cellularia reptans}. 

 Creeping, with forked branches. Cells with an oblique 

 opening, armed with short spines at the top. On Flustra 

 foliacea, &c. (PL VIII., fig. 13.) 



671. BIRD'S-HEAD CORALLINE (Cellularia avicularia). 

 Erect, one or two inches high, with forked branches. 

 Cells with a helmet-like figure over the opening, and two 

 spines on the top of each. On the outward margin a 

 bird's-head process. On zoophytes, &c. 



672. BROAD HORNWRACK (Flustra foliacea). Spread- 

 ing and leaf-like, with cells on both sides. Cells narrow 

 at the base, surface roughish, arched at the top with four 

 or six conical spines. Common. (PL VIII., fig. 8.) 



673. PAPERY HORNWRACK (Flustra chartacea}. In 

 small bushy tufts. Cells on both sides, oblong, swelling 

 a little in the middle. Substance brittle and paper-like. 

 Common on the Sussex coast. (PL VIII., fig. 9.) 



674. NARROW HORNWRACK (Flustra truncatd). Bushy, 

 four or five inches in length, forked ; branches narrowed 

 at their base ; cells narrow oblong ; walls thin ; opening 

 small and circular. In deep water. (PL VIII., fig. 12.) 



675. MEMBRANE HORNWRACK (Flustra membranacea), 

 Crustaceous, forming a gauzy incrustation ; cells oblong, 



