107 



Breadth of flattened frond from 0,5 to 3,5 mm., apex attenuated, roundish, sometimes 

 cylindrical in specimens brought up with the trawl. 



Lobes inserted with broad basis with acute, truncate, dentate, thin apex. 



Central strand much cleveloped with protruding midrib, especially in specimens from 

 deeper water, in which even the lobes may be entirely wanting for a fairly long distance. 

 Fructification consists of conceptacles at the acute top of the lobes immersed in the frond ; 

 either single or in pairs. 



As far as I know, no diagnosis had been given by Harvey of this widely distributed 

 alga. It is to be found in the Indian and Pacific Oceans and adopts many forms according 

 to the depth in which the specimen grows. The specimens that came up with the dredge were 

 very slender and several of them had attached themselves to other algae on which they 

 were creeping. 



The specimens of Harvey from the Friendly Islands are more robust than those of the 

 Siboga. The specimens distributed by Grunow from Upola connect the two forms and take up 

 an intermediate position between the two. 



According to Grunow C. spectabilis Harv. much resembles Amphiroa multifida Kütz., 

 whether the two are identical I do not dare to decide. 



2. Cheilosporuiii jungermannioides Rupr. 



Postels & Ruprecht. Illustr. Alg. Oc. Pacifïci 1840. 

 Southcoast of Java. Teysman. 



After careful examination of the type of Cheilosporum jungermannioides, I feit convinced 

 that the plant from the South-coast of Java is identical with it. 



Corallina Lamx. 



1. Corallina pil ij era Lamx. 



Lamouroux, Pol. flexibles. Caen 18 16. 



Areschoug in Agardh's Spec. Gen. et Ord. Alg. 185 1. 



Stat. 169. Atjatuning, New Guinea. On dead branches submersed in the sea. 

 This Corallina is probably only a form of the highly variable C. Cuvieri Lamx. 



Jania Lamx. 



1 . Jania adhaerens Lamx. 



Lamouroux, Pol. flex. 18 16. 



Areschoug in Agardh, Spec. Gen. et Ord. Alg, 185 1. 



Kutzing, Tab. Phyc. t. 8, pi. 83^. 



Stat. 78. Lumu-Lumu shoal, Borneo-bank. 



Stat. 172. Gisser. 



Stat. 225. Lucipara-group. 



