MARINE CYANOPHYCEAE FROM EASTER ISLAND 463 



Brachj'trichia Zanard. 



B. inaculaiis Gom. 



GoMONT in Schmidt: Flora of Koh Chang IV, Bot. Tidsskr. Vol. 24, p. 127, 

 pi. V, fig 5 — 7. — Collins and Hervey, The algae of Bermuda. Proc. Am. Ac. 

 Arts and Sc. Vol. 53, No. i, 191 7, p. 28. 



The specimens found formed a flat, compact lliallus, attached to a stone. 

 The thallus was 0,24 mm. thick and about 2 cm. in diameter. It consisted of 

 numerous erect, parallel double-threads. Every sheath contains one trichome 

 that in the majority of cases is bent in the middle, having the two parts 

 parallel and each of them ending in a hair. The species has formerly been 

 found growing between tide-marks, and it is also found at Easter Island under 

 similar conditions. 



Area of distribution: Koh Chang (Gulf of Siam), Bermuda. Conse- 

 quently this species is now recorded from the three Oceans. 



Printed ^^U 1^26. 



