612 CODI ACE AE. 



4. Avrainvillea Kawsoni (Dickie) M. A. Howe, Bull. Torrey Club 34: 510. 

 1907. 



Shipilia Eawsoni Dickie, Jour. Linn. Soc. Bot. 14: 151. pi. 11. f. 1, S. 

 1874. 



In shallow water, often at low-water line on exposed rocks. Abaco, Gun Cay, 

 North Cat Cay, Berry Islands, Exuma Chain, Watltng's Island, Mariguana, Caicos 

 Islands, and Great Ragged Island : Jamaica, Porto Rico, Guadeloupe, and Bar- 

 bados. Type from Barbados. 



2. RHIPILIA Kiitz. Tab. Phyc. 8: 12. 1858. 



1. Rhipilia tomentosa Kiitz. loc. cit. pi. 28. f. 1. 



Udotea tomentosa Murr. Jour. Bot. 27: 239. 1889. 



In shallow water (down to 30 meters, fide Borgesen). North Cat Cay: Cuba, 

 Porto Rico, American Virgin Islands, Antigua, and Guadeloupe. Type from Antigua. 



3. CLADOCEPHALUS M. A. Howe, Bull. Torrey Club 32: 569. 1905. 

 1. Cladocephalus scoparius M. A. Howe, loc. cit. pi. 25; pi. 26. f. 11-20. 



In shallow water. New Providence, Exuma Chain, and YVatling's Island. Ap- 

 parently endemic. Type from a tidal pond, Georgetown, Great Exuma. 



4. PENICILLUS Lamarck, Ann. Mus. Hist. Nat. 20: 297. 1813. 



Nesaea Lamour. Nouv. Bull. Sci. Soc. Philom. 3: 185. 1812. Not Nesaea 



Commers.; Juss. Gen. PI. 332. 1789. 

 Coralliodendron Kiitz. Polyp. Calcif. 11. 1841. 

 Coballocephaltjs Kiitz. Linnaea 17: 95. 1843. 



Surface of stipe compact, indurated, smooth or minutely granulose under a hand- 

 lens ; ultimate branchlets of corticating filaments short-oblong, obtuse, trun- 

 cate, or capitate. 



Filaments of capitulum 135-250 p. in diameter. 1. P. capitatus. 



Filaments of capitulum 300-550 n in diameter. 2. P. Lamourouxn. 



Surface of stipe spongiose or velutinous-tomentulose under a 

 hand-lens ; ultimate branchlets of corticating filaments 

 elongate, taper-pointed. 



Filaments of capitulum 500-900 n in diameter. 3. P. dumetosus. 



Filaments of capitulum 150-320 /* in diameter. 4. P. piriformis. 



1. Penicillus capitatus Lamarck, loc. cit. 299. 



? Corallina Penicillus L. Syst. Nat. 1: 807. 1758. 



Corallina Penicillus Ell. & Soland. Nat. Hist. Zooph. 126 p.p. pi. 25. f. 4. 



1786. 

 Nesea Penicillus Lamour. Hist. Polyp. 258. 1816. 

 Penicillus elongatus Decaisne, Ann. Sci. Nat. Bot. II. 18: 109. 1842. 

 Corallocepnalus Penicillus Kiitz. Linnaea 17: 95. p.p. 1843. 

 Corallocepnalus oarbatus Kiitz. Tab. Phyc. 7: 8. pi. 20. f. 11. 1857. 



" The Merman's Shaving-brush " ; very common, usually on a sandy or muddy 

 bottom in shallow water (mostly in 0.5-10 meters). New Providence, Rose Island, 

 Berry Islands, Andros, Great Bahama, Garden Cay, Exuma Chain, Cat Island, 

 YVatling's Island, Atwood Cay, Mariguana, Caicos Islands, and Great Ragged Island: 

 . Bermuda and Florida to Guadeloupe. Type from American seas. 



2. Penicillus Lamourouxii Decaisne, Ann. Sci. Nat. Bot. II. 18: 109. 1842. 



? Corallina Penicillus Ell. & Soland. Nat. Hist. Zooph. 126 p.p. pi. 25. f. 5. 



1786. 

 ? Nesea pyramidalis Lamour. Hist. Polyp. 258. 1816. 

 Penicillus Lamourouxii gracilis A. & E. S. Gepp, Jour. Bot. 43: 2. 1905. 



On a sandy bottom in shallow water. New Providence, Rose Island, Great 

 Bahama, Garden Cay, Bimini, Green Turtle Cay, Exuma Chain, YVatling's Island, 



