EHODYMENIACEAE. 563 



4. Gracilaria damaecomis J. Ag. Sp. Alg. 2: 597. 1852. 



In tide-pools and in sliallow water, North Cat Cay and Caicos Islands : — Ber- 

 muda ; Florida ; and the West Indies generally. Type probably from St. Croix. 



5. Gracilaria cornea J. Ag. Sp. Alg. 2: 598. 1852. 



In shallow water, Caicos Islands : — Florida ; Poito Rico. Type from Pernam- 

 buco ( ?). 



2. HYPNEA Lamour. Essai, 43. 1813. 

 Hypxophycus Kiitz. Linnaea 17: 102. 1843. 



1. Hypnea musciformis (Wulf.) Lamour. loc. cit. 



Fiicus musciformis Wulf. in Jacq. Collect. 3: 154, x>l. 14. f. 3. 1789. 



Hypnopliycus musciformis Kiitz. loc. cit. 



Common in shallow water, extremely variable, Berry Islands, Great Bahama, 

 Bimini. Gun Cay. Exuma Chain, Watling's Island, Atwood Cay, Mariguana, Caicos 

 Islands, and Great Ragged Island : — Massachusetts to Bermuda and Florida and 

 throughout the West Indies ; widely distributed in temperate and tropical seas. Type 

 from Trieste. 



Family S. RHODYMENIACEAE. 



1. CORDYLECIiADIA J. Ag. Sp. Alg. 2: 702. 1852. 

 1. Cordylecladia irregularis Harv. Ner. Bor.-Am. 2: 156. 1853. 



Chylocladia rigens J. Ag. p. p. Sp. Alg. 2: 362. 1852. Xot Sphaerococcus 



rigens Ag. Sp. Alg. 1: 332. 1822. 

 Cordylecladia rigens Collins & Hervey p. p.; C, H., & S., Phvc. Bor.-Am. 



S186. 1917. 



In tide-pools and on rocks in shallow water, more or less steel-blue and irides- 

 cent when living, Berry Islands, Bimini, Eleuthera, Exuma Chain, Watling's Island, 

 Atwood Cay, Mariguana, and Great Ragged Island : — Bermuda ; Florida ; Cuba ; Ja- 

 maica ; and Porto Rico. Type from Key West, Florida. 



2. OHRYSYMENIA J. Ag. Alg. Med. et Adriat. 105. 1S42. 

 1. Chrysymenia uvaria (L.) J. Ag. loc. cit. 106. 



Fucus uvarius [" ovarius"] L. p. p., Syst. Nat. 2: 714. 1767 [ed. 12]. 

 Fucus hotryoides Wulf. in Jacq. Collect. 3: 146. pi. 13. f. 1. 1789. 



In deep water or under shelving rocks in shallow water. South Caicos : — Ber- 

 muda ; North Carolina: Florida: Porto Rico: American Virgin Islands: Barbados; 

 Brazil ; Canary Islands ; Mediterranean and Adriatic seas, 



3. CHAMPIA Desv. Jour, de Bot. Desv. 1: 245. 1808. 



Mertexsia Thunb.; Roth, Neues Jour. Bot. Schrad. 2}-. 11. 1806. 



Not Mertensia Roth, Cat. Bot. 1: 34. 1797. 



Mature segments mostly 0.3-0.0 mm. broad. C. parrula. 



Mature segments mostly 1-2 mm. broad. C salicornioidcs. 



1. Champia parvula (Ag.) Harv. Ner. Bor.-Am. 2: 76. 1853. 

 Chondria parvula Ag. Syst. 207. 1824. 



On other algae, Thalasfiia, etc., from low-water mark down to 20 fathoms (fide 

 Borgesen), Great Bahama, Exuma Chain, Great Ragged Island, and Caicos Islands: 

 — Massachusetts to Bermuda ; Florida ; and the West Indies generally ; Europe. Type 

 from Cadiz, Spain. 



