130 BOTANICAL RESULTS OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 



37. ENTOPHYSALIS GRANTJLOSA, Kiitz., Phyc. gen., 1843, p. 177, pi. xviii., fig. 5. 

 Sample 16, common. 



38. ? APHANOTHECE SAXICOLA, Naeg., Gatt. einzell. Alg., 1849, p. 60, tab. 1, H, fig. 2. 

 Sample 11, rare. 



39. MICROCYSTIS OLIVACEA, Kiitz., Phyc. gen.,ip. 170; Rabenh., Fl. Europ. Alg., 

 ii., 1865, p. 51. 



Samples 8, 9, 10, 11, and 14, rather common ; previously recorded from Kerguelen 

 (Reinsch). 



40. MICROCYSTIS MERISMOPEDIOIDES, n. sp. (text fig. 1, B, p. 122). 



Fauiilise parvse solidse circumfereutia irregular! constant ex cellulis pusillis quse 

 muco fusco-flavescente vel rarius achroo et, ut videtur, tenaci cohserent. Cellulse in 

 facie familiae quaternaries regularissime dispositae (ut in genere Merismopedia) ; 

 dispositio cellularum in partibus interioribus familise investigari non potest, sed dispositio 

 regularis verisimile est. Diam. fam. = 13-20 M ; diam. cell, fere 07 M. 



Samples 11 and 14, common. 



In view of the very minute size of the cells and their dense aggregation, it has been 

 impossible to determine exactly their arrangement in the interior of the solid colonies, 

 but focussing in different planes seems to show that the same regular arrangement 

 obtains all through. It is possible that this species belongs to the genus Eucapsis, 

 described by Clements and Shantz (Minnesota Bot. Studies, iv., 1909, p. 134), but in 

 the latter genus the colonies are described as cubical, which in no way applies to the 

 rather irregular colonies of M. merismopedioides. They closely resemble those of a 

 Microcystis in all except the regular arrangement of the minute cells. 



41. CLATHROCYSTIS RETICULATA (Lemm.), Forti, Sylloge Myxophycearum, 1907, 

 p. 96. 



Sample 10, rather rare. 



42. GOMPHOSPILERIA APONiNA, Kiitz., Tab. Phyc., i., tab. xxxi., fig. 3 ; Rabenh., Fl. 

 Europ. Alg., ii., 1865, p. 56. 



Sample 11, rare. 



43. CfELospHiERiUM KUTZiNGiANUM, Naeg., Gatt. einzell. Alg., 1849, p. 54, tab. 1, c. 

 Sample 11, rare. 



44. MERISMOPEDIA GLAUCUM (Ehrb.), Naeg., Gatt. einzell. Alg., 1849, p. 55, tab. 1, D, 

 fig. 1. 



Sample 11, rather rare. 



45. MERISMOPEDIA TENUISSIMUM, Lemm., Beitr. z. Kenntn. d. Planktonalgen, Bot. 

 Centralbl, 1898, p. 154. 



Sample 10, rare. 



