58 COLLINS AND HERVEY. 



1. P. CAPiTATUS Lamarck, 1813, p. 299; Harvey, 1858, p. 45, 

 PL XLIII. B; Collins, 1909, p. 392; P. B.-A., No.' 1911. Kemp, 

 specimen in herb.; Rein; Moseley; Wadsworth, No. 75; Tucker's 

 Town, Farlow; Hungry Bay, June, Howe; Gravelly Bay, March, 

 Mangrove Bay, Feb., Harris Bay, Oct., Nov., Inlet, Dec, Hervey; 

 Cooper's Island, April, Jew's Bay, July, Ely's Harbor, Inlet, Hungry 

 Bay, Aug., Collins. Common practically everywhere in shallow 

 water and dredged down to 10 m. 



Forma elongatus (Dene.) Gepp, 1911, p. 83, figs. 166-167; 

 P. B.-A., No. 1912; P. elongaius Decaisne, 1842, p. 97 (reprint). 

 Jew's Bay, July, Harrington Sound, Mangrove Lake, Aug., Collins. 

 A form with long stipe, pyriform head, filaments stouter than in the 

 typical form, in company wuth which it grows, the two shading into 

 each other. 



Forma laxus Borgesen, 1913, p. 98, fig. 80. Walsingham, Feb., 

 Hervey. A form with long and sletider stipe, head more or less 

 irregular in form, filaments loose and slender. In the specimens 

 which we identif^^ with this form the branching of the stipe is not 

 unusual, each division having a head of the normal shape for this 

 form. 



2. P. PYRiFORMis Gepp, 1905, p. 1, PI. CCCCLXVIII, fig. 1; 

 Colhns, 1909, p. 393; P. B.-A., No. 2075. June, Howe; Feb., Far- 

 low; Harris Bay, Jan., Oct., Dec, Inlet, Dec, Hervey. Often grow- 

 ing with P. capitatus, but less common. 



Udotea Lamouroux. 



1. Whole flabellum with a stony coating. 2. U. flabellum. 



1. Flabellum flexible, individual filaments encrusted. 1. U. conglutinata. 



1. U. CONGLUTINATA (Soland.) Lamouroux, 1816, p. 312; Howe, 

 1909, p. 96, PI. II, PI. VIII, figs. 1-13; Collins, 1909, p. 395; P. B.-A., 

 No. 1913; CoraUhia conglntinata Solander in Ellis & Solander, 1786, 

 p. 125, PI. XXV, fig. 7. Rein; Kemp; South Beach by Paget, Feb., 

 Farlow; Harris Bay, Jan., Feb., March, Nov., Hervey. In tide 

 pools, a small form only; dredged in 10 meters by the Challenger 

 Expedition. 



2. U. FLABELLUM (Ell. & Sol.) Howe, 1904, p. 94; Gepp, 1911, 

 p. 131, PI. Ill, figs. 26-28; Collins, 1909, p. 395; P. B.-A., No. 1914; 

 CoraUina flabellum Ellis & Solander, 1786, p. 124, PI. XXIV. Rein; 

 Kemp; Tucker, No. 23; Walsingham, Farlow; many stations, Hervey, 



