618 CHARACEAE. 



2. Chara foUolosa MuM.; Willd. Mem. Acad. E07. Berlin 1803: 86. pi. 1. f. S. 



I81O5. 



Chara polyphylla Muhlenbergii A. Br. Boston Jour. Nat. Hist. 5: 264. 



1845. 

 Chara Wikstromii Wallm. K. V«t.-Akad. Handl. 1852: 297. 1854. 

 Chara gymnopus Hwmboldtii A. Br.; Alien, Char. Am. 2. 1880. 

 Chara depauperata Allen, BuU. Torrey Club 21: 167. pi. 19S. 1894. 

 Chara zeylanica H. & J. Groves, in Urban, Symb. AntUl. 7: 40. 1911. 



In fresh-water and brackish ponds. New Providence, Great Bahama, Abaco, 

 Cat Island, and Great ISxuma : — Pennsylvania to South America. Type from South 

 America. The type of C. depauperata^ bere considered a synonym, was from New 

 Providence. 



3. Chara haitensis Turpin, Diet. Soi. Nat. Veg. Aeot. pi. 101. (Livr. 40: pi. 1). 



1826. 



Chara polyphylla A. Br. Flora 18 : 70. 1835. 

 Chara Michauxii A. Br. Am. Jour. Sci. 46: 93. 1844. 

 Chara gymrcopus Michauxii A. Br. ; Allen, Char. 2. 1880. 

 Chara zeylanica MichoMxii H. & J. Groves, in Urban, Symb. Antill. 7: 42. 

 1911. 



In fresh-water and brackish ponds. Ina^a : — Illinois and Virginia to Haiti, 

 Jamaica, and South America. Type from Haiti. 



Sub-Class MYXOPHYCEAE. 



Contributed by Frank S. Collins. 

 Family 1. CHROOCOCCACEAE 



1. CHBOOCOCCTTS Nag. Gatt. 45. 1849. 



Cells 3-Su in diameter. 1. C. memirantnus. 



Cells 13-25*1 in diameter. 2. C. turgidus. 



1. Ohroococcus membraninus (Menegh.) Nag. Gatt. 46. 1849. 



Pleurococcus membraninus Menegh. Monogr. 34. pi. 4. f. 1. 1S43. 



Among other small algae, in company with Chroococcus turgidus, Caicos Islands : 

 — Europe ; Bermuda. Type from Italy. 



2. Ohroococcus turgidus (Kiitz.) Nag. Gatt. 46. 1849. 



Protococeus turgidus Kiitz. Tab. Phyc. 1: 5. pi. 6. f. 1. 1846. 



Among other blue-green algae, Caicos Islands : — of world-wide distribution, 

 marine and fresh water. Type from Europe. 



2. APHANOCAPSA Nag. Gatt. 52. 1849. 

 1. Aphanocapsa Howei Collins, sp. nov. 



Marina. Cellulis 9-15 /i diam., sphaerieis, raro subfusif ormibus, mem- 

 brana pertenui, plasmate homogeneo; cellulis in gelatina communi hyalina mol- 

 lisaima inordinatis; strato obseuro- vel atro-aerugineo. 



Cells 9-15 M in diameter, spherical or rarely slightly fusiform, wall very 

 thin, substance homogeneous, color pale aeruginous; forming a dull or dark 

 aeruginous stratum, united by thin, homogeneous common gelatine, closely set 

 in no definite order. 



