GELIDIACBAE. 551? 



7. Galaxaura oblongata (Ell. & Sol.) Lamour. Hist. Polyp. 262. 1816. 



Corallina oblongata Ell. & Sol. Nat. Hist. Zooph. 114. pi. $2. f. 1. 1786. 

 Dichotomaria fragilis Lamarek, Hist. Nat. Anim. sans Vert. 2: 145. 1816. 

 ■Galaxaura fragilis Decaisne, Ann. Sci. Nat. Bot. II. 18: 116. 1842. 



From low-water mark down to 50 meters, South Bimini and Caicoa Islands : — 

 Cuba ; Jamaica ; Porto Rico ; American Virgin Islands ; Barbados ; and Panama 

 (Colon). Type from "West Indian Islands." 



8. Galaxaura obtusElta (Ell. & Sol.) Lamour. Hist. Polyp. 262. 1816. 



Corallina oUusata Ell. & Sol. Nat. Hist. Zooph. 113. pi. 2S. f. 2. 1786. 

 Galaxaura Deeaisnei J. Ag. Sp. Alg. 3'; 526. 1876. 



Galaxaura moniliformis Kjellm. K. Sv. Vet.-Akad. Handl. 3": 83. pi. 17. f. 

 15-30; pi. 20. f. 54. 1900. 



Mostly in 7-18 meters of water, type attributed to the Bahamas : — ^Bermuda ; 

 Florida ; Cuba ; Jamaica ; Porto Rico ; Barbados ; and Brazil. 



9. Galaxaura marginata (Ell. & Sol.) Lamour. Hist. Polyp. 264. 1816. 



Corallina marginata Ell. & Sol. Nat. Hist. Zooph. 115. pi. 22. f. 6. 1786. 



Zanardinia marginata J. Ag. Sp. Alg. 3^; 534. 1876. 



Brachycladia marginata Schmitz, Flora 47: 438. 1889. 



Galaxaura occidentfllis Borg. Dansk Bot. Ark. 3^: 109. /. 118-123. 1916. 



Low-littoral iinder shelving rocks or in shallow water. Berry Islands and Great 

 Bahama : — Bermuda ; Florida ; Cuba ; Jamaica ; Porto Rico ; American Virgin Islands ; 

 Barbados; and Panama (Colon). Type from the Bahamas. 



Family 4. GELIDIACBAE. 



1. WBAN6ELIA Ag. Sp. Alg. 2: 136. 1828. 



Principal filaments corticated. 1. TF. penicillata. 



Filaments uncorticated or with loose irregular rhizoidal corti- 

 catlons at nodes only. 

 Plants 1—3 cm. high, purple-red ; the conic-acute terminal 



cells of the ultimate ramuli mostly solitary. 2. TF. Argus. 



Plants 4-10 cm. long or high, usually rose-pink ; the conic- 

 acuminate or acicular terminal cells of the ultimate ramuli 

 mostly geminate. 3. W. iicuspidata. 



1. Wrangelia peniciUWa (Ag.) Ag. Sp. Alg. 2: 13S. 1828. 



Griffitsia penicillata Ag. Syst. Alg. 143. 1824. 



Variable in size, color, and habit of branching ; often blackening with age or on 

 drying. On rocks and on other algae from between the tide-lines in sprayed or surf- 

 beaten locations down to a depth of 30 meters (.fide Borgesen), New Providence, 

 Great Bahama, North Cat Cay, Berry Islands, Bsuma Chain, Watling's I^and, Mari- 

 guana, and Caicos Islands : — of wide distribution in the West Indies and in the 

 warmer seas. Type from Italy. 



2. Wrangelia Argus (Mont.) Mont. Syll. 444. 1S56. 



Griffithsia Argus Mont, in Webb. & Berth. Phyt. Canar. PI. Cell. 176. pi. 8. 



f. 4. 1840. 

 Wrangelia pleleja J. Ag. Sp. Alg. 2 : 707. 1852. 



Forming low compact cushions on rocks and algae near the low-water mark, 

 Great Bahama, South Bimini, and the Caicos Islands : — Mexico ; Florida ; Porto 

 Rico ; American Virgin Islands ; Barbados ; and Canary Islands. Type from the 

 Canary Islands. 



3. Wrangelia bicuspidata Borg. Dansk Bot. Ark. 3'- 118. /. 127^130. 1916. 



On roots of BMzophora and on various algae and Gorgoniaceae, from low-water 

 mark down to 30-40 meters {fide BSrgesen), often abundant. Rose Island, Berry 

 Islands, Great Bahama, Exuma Chain, Watling's Island, Atwood Cay, Caicos Islands, 

 and Great Ragged Island : — American Virgin Islands. Type from American Virgin 

 Islands. 



