ALGAE. 553 



6. Physcia crispa (Pers.) Nyl. Syn. Lich. 1: 423. 1858. 



Parmelia crispa Pers. in Gaudich. Toy. Uran. 196. 1826. 



Common on trees, from Great Bahama to Cat Island : widely distributed in the 

 warmer regions of both hemispheres. 



7. Physcia stellaris (L.) Nyl. Syn. Lich. 1: 424. 1858. 



Lichen stellaris L. Sp. Plant. 1144. 1753. 



On trees, Berry Islands, New Providence, Cat, and Watling's Islands : cosmo- 

 politan. 



8. Physcia integrata Nyl. Syn. Lich. 1 : 424. 1858. 



On trees, Harbor Island, Eleuthera, Cat Island, at Port Howe, and Watling's 

 Island, near Cockburn Town : tropical America. 



8a. Physcia integrata var. sorediosa Wainio, Lich. Bres. 1: 142. 1890. 

 On CocoloMs, Lignum Vitae Cay, Berry Islands : with the species. 



Class 2. ALGAE. 



CONTRIBUTED BY MARSHALL A. HOWE. 



SUB-CLASS RHODOPHYCEAE. 



Family 1. BANGKEACEAE. 



1. BANGIA Lyngb.; Hornem. Fl. Dan, 9 27 : 8. 1818; Lyngb. Hydroph. 



Dan. 82. 1819. 



?DIADENUS Pal. de Beauv.; Desv. Jour, de Bot. 1: 124. 1808. 



1. Bangia liitea J. Ag. Alg. Med. et Adriat. 14. 1842. 



Bangia pallida Kiitz. Phyc. Gen. 250. 1843. 

 Bangia bidentata Kiitz. Phyc. Germ. 195. 1845. 

 Bangia pallescens Kiitz. Sp. Alg. 260. 1849. 



In its short broad cells, the Bahamian plant resembles Kiitzing 's fig. c 

 (Tab. Phyc. 3: pi. 28 IV) of his Bangia bidentata. It appears to be more 

 rosaceous and less luteous than old specimens from the Mediterranean, but 

 otherwise not essentially different. 



On rocks between the tide-lines, Silver Cay (New Providence) : reported from 

 Guadeloupe ; Mediterranean and Adriatic seas. Type from Italy. 



2. ERYTHKOTRICHIA Aresch.; Sumrn. Veg. Scand. 132. 1846. 



1. Erythrotrichia carnea (Dillw.) J. Ag. Till Alg. Syst. 3: 15. 1883. 

 Conferva carnea Dillw. Brit. Conferv. pi. 84. 1807. 

 Conferva ceramicola Lyngb. Hydroph. Dan. 144. pi. 48D. 1819. 

 Erythrotrichia ceramicola Aresch.; Phyc. Scand. Mar. 210. 1850. 



On Sargassum, etc., probably common, Berry Islands : widely distributed in 

 temperate and tropical seas. Type from Wales. 



3. GONTOTRICITUM Kiitz. Linnaea 17: 89. 1843; Phye. 

 Gen. 244. 1843. 



1. Goniotrichum Alsidii (Zanard.) M. A. Howe, Mem. Torrey Club 15 : 75. 1914. 

 Bangia Alsidii Zanard. Bibl. Ital. 96: 136. 1839; Syn. Alg. Mar. Adriat. 



115. pi. 6. f. 7. 1841. 



Bangia elegans Chauv. Menu. Soc. Linn. Norm. 6 : 13 (nomen nudum). 1838. 

 Goniotrichum elegans Zanard. Not. Cell. Mar. 69. 1847. 



On Spermothamnion speluncamm and Wrangelia penicillata, Mariguana : widely 

 distributed in temperate and tropical seas. Type from Trieste. 



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