' 



216 WOUMS. ZO0PHYTA. "78. Sertularia. 



Stem about 3 inches high, alternately pinnate ; dtntir ,c% near 

 •together, femiorbicular. 



733. S.setacea. Stem simple, oblong, pinnate : denticles 

 obsolete, .remote, along the upper-side of the bran- 

 ches : vesicles oblong, axillary. 



Ellis' Coral, t: 38./. 4. ShawMaU Mkcell. U-j\. 



About half the size of ..the .former: brandies a little curved 

 downwards : vesicles erect, tubular, at the angles of the 

 branches. 



734. ^.polyzonias. Stem loosely branched : denticles 

 alternate, ovate-oblong, undulate round the top: 

 vesicles obovate, with concentric wrinkles. 



Ellis Coral, p. 5. n. 3. tab. <2..f. a. A. b. B. 



Stem erect or climbing, 3 or 4 inches long, pale yellow. 



135. S. Lichenastrum. Stem simple, alternately pinnate : 

 denticles alternate, obtuse, in 2 appr&ssed rows, along 

 the stem and branches : vesicles oval, with a 

 lid. 



"■ Ellis. Corall. p. it. a. jo, t. 6. Suiland. and Ellis p. 42. n. -to. 



Stem erect, jointed, compressed: branches alternate, nearly 

 horizontal,. 



736. S. imbricata. Stem slightly branched : denticles 

 obsolete: vesicles oblong, slightly clavate, irregu- 

 larly imbricate along the branches. 



" Adams Linn. Transact, v.p, tx.tab. a../. 5-1 1 . 



Stem -cylindrical, about 3 inches high: vesicles >ip\&c&& in 2 rows 

 along the fmaller branches, but irregularly imbricate towards 

 the- tip. 



B. Stem crustaceous, inclining to stony, composed of rows of 

 cellular denticles, without distinct vesicles, in the place of 

 which are small globules. Cellaria. 



737. S. Bursa. Stem branched, dichotomous : denti- 

 cles opposite, compressed, truncate, we#gc form, 

 with a small clavate tube at top. 



Ellis. Corall. p. ^i.;iab. 22. n. 8./. -a. A. 



•Minute, flexible, tranCparerLt, adhering to Fuci '.denticles cari* 

 nate,appearing in pairs like the pods of the Shepherd's purfe. 



738. S. loriculata. Branches erect, dichotomous : denti- 

 cles opposite, obliquely truncate, nearly obsolete, 



Ellis Corallines p. 40. n. 7. tab. 21. f. b. B. 



Stem much branched -.'denticles opening obliquely. 



739. S. fastigiata. Branches erect, forked, flat-topped: 

 denticles alternate, pointed, with their opening on 

 one side. 



Ellis Corallines p. 33. fi. 1. tab. 18, 



Denticles with a black fpot in the middle of the mouth. 



740. S. avicularia. Branches forked : denticles point- 

 ing one way, with 2 mucronate beak-like appen 

 dages : globules sessile, mucronate, 



Ellis Corallines p. 36. «. 2. tab. 20./. a. A. 



Denticles with 2 projections refembling a bird's beak wken 

 open : globules testaceous, with a fpine at the bafe. 



741. S. semposa. Branches forked, creeping: denticles 

 alternate, angular, spinous. 



