614 C'ODIA'CEAE. 



straight and parallel, mostly 60-100 ij, in diameter ; 

 branches of corticating filaments of stipe com- 

 pactly cymose-fastigiate, the ultimate divisions 

 scarcely longer than broad, truncate, truncate-ob- 

 * tuse, or commonly with expanded truncate-capi- 



tate apices. 3. V. cyathiformls. 



Filaments of flabellum appendaged ; calcareous sheaths, if 

 differentiated, nou-porose. 

 Filaments strongly constricted above dichotomies ; ap- 

 pendages crowned with 2—8 acuminate prongs or 

 spines. 4. V. spinulosa. 



Filaments not constricted above dichotomies ; append- 

 ages simple or sparingly furcate, obtuse, truncate, 

 or capitate. 5. V. Wilsoni. 



1. Udotea FlabeUum (Ell. & Soland.) M. A. Howe, BuU. Torrey Club 31: 94. 



1904. 

 CoraUina Flabellum Ell. & Soland. Nat. Hist. Zooph. 124. pi. 2i, f. A, B, 



C. 178'6. 

 Flahellaria pavonia Lamarek, Ann. Mus. Hist. Nat. 20: 301. 1813. 

 Vdotea, fldbellata Lamour. Hist. Polyp. 311. 1816. 

 Fldbellaria incrustata Ohauvin, Eecherehes 123. 1842. 

 Udotea Salimeda Kiitz. iSp. Alg. 503. 1849. 



Common on a sandy or muddy bottom, from near low-water marli down to 

 30-40 meters. New Providence, Berry Islands, Great Bahama, Garden Cay, Bimini, 

 Exuma Chain, Watling's Island, Mariguana, Caicos Islands, Great Ragged Island, 

 and Salt Cay: — Bermuda and Florida to Guadeloupe and Panama (Colon). Type 

 from " West Indies." 



2. Udotea conglutinata (Ell. & Soland.) Lamour. Hist. Polyp. 312. 1816. 



CoraUina conglutinata EH. & Soland. Nat. Hist. Zooph. 125. pi. S5. f. 7. 



1786. 

 Flaiellaria conglutinata Lamarok, Ann. Mtis. Hist. Nat. 20 ; 301. 1813. 



On a sandy bottom from near low- water mark down to 14 meters or more. 

 New Providence, Andros, Joulter's Cays, North Cat Cay, Bimini, Green Cay, Wat- 

 ling's Island, Mariguana, Caicos, and Castle Island : — ^Bermuda and Florida to the 

 American Virgin Islands. Type from the Bahama Islands. 



3. Udotea cyathiformis Deoaisne, Ann. Sci. Nat. Bot. II. 18: 106. 1842. 



Udotea conglutinata Vickers, Phyc. Barbad. 1: pi. 32. 1908. 



On a sandy bottom from near low-water mark down to 30 meters or more. 

 Berry Islands, Bimini, North Cat Cay, Eocuma Chain, Caicos Islands, and Castle 

 Island: — North Carolina to Barbados and Panama (Colon). Type from Isles des 

 Salutes, Guadeloupe. 



4. Udotea spinulosa M. A. Howe, Bull. Torrey Qub 36: 97. pi. 4. f. S; pi. 8. 



f. 1-7. 1909. 

 On a sandy bottom near low-water mark. Bimini (type) : — ^American Virgin 

 Islands (in 30-40 meters, 1ide BBrgesen). 



5. Udotea Wilsoni Gepp & Howe, Siboga Exped. Monog. 62: 130. pi. 7. f. 66; 



pi. 8. f. 67, 68. 1911. 

 On a sandy bottom in shallow water. Anguilla Isles (type) : — Florida and Cuba. 



7. HAIIMEDA Lamour. Nouv. Bull. Sci. Soc. Philom. 3: 186 (as 



Salimedea* ) . 1812. 



Opuntia Nacc. M. Ven. 6: 104. 1828. Not Opuntia L. 



Sertolara (Imp.) Nardo, Isis 1834: 673. 1834. 



BOTRTOPHORA Bompard, Hedwigia 6: 129. 1867. 



Segments reniform, semiorblcular, or deltold-obovate, margins entire or (in H. 

 Opuntia) crenate or sometimes lobed. Nodal filaments of central strand fusing 

 more or less completely in pairs or in threes. 



' Afterwards (1816) changed by Lamouroux himself to HaUmeda. 



