130 BOTANICAL RESULTS OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 



37. ENTOPHYSALIS GRANTJLOSA, Kiitz., Pliyc. 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 1 1 , rare. 



39. MICROCYSTIS OLIVACEA, Kiitz., Phyc. gen., p. 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, E, p. 122). 



Familise parvae solidse circumferentia ii-regulari constant ex cellulis pusillis quas 

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

 facie familise quaternaries regularissime disposita? (ut in genere Merismopedia) ; 

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

 regularis verisimile est. Diam. fam. = 13-20/" ; diam. cell, fere 0'7 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 (Lcmm.), Forti, Sylloge Myxopltycearum, 1907, 

 p. 96. 



Sample 10, rather rare. 



42. GOMPHOSPH^RIA APONINA, Kutz., Tab. Phyc., i., tab. xxxi., fig. 3 ; Rabenh., Fl. 

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



Sample 11, rare. 



43. CCELOSPH^ERIUM 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 1 1 , rather rare. 



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

 Centralbl., 1898, p. 154. 



Sample 10, rare. 



