COKALIilN^: YEUM JAPONICiE. 7 



This species, common in the Gulf of Naples, is rather rare in 

 Japan ; being restricted to the southern coast of KiushQ Island and 

 hitherto not found in the main island (Honshu) : in the low side 

 mark and below. 



3. Amphiroa cretacea, Endl. 



PL I. fig. 4 : PL l\. tig. 2. 



Fronde lapidescente, irregulariter di-trichatome ramosa, superne 

 attenuata ; ramis ramulisque divaricato-deflexis, saepe insignis ; 

 articulis 4-8 mm. longis, 2-o mm. latis ; geniculis sublineœformibus ; 

 conceptaculis verrucaeformibus prominentibus diametro 0.8 mm. 



Corallina cretacea, Post, et Rupr. 111. Alg. ]). 2. Taf. XL. 



tig. 104. 

 Amphiroa cretacea, Endl. 



Aresch : in J. Ag. spec. Alg. II p. 533. 

 Kiitz : spec. Alg. p. 701. 

 Id : Tab. Phyc. VIII. Taf. 45. 

 Harv : Ner. Bor. Amer. p. 86. 

 ? A. californica, J. E. Tilden. Amer. Alg. TV. no. 301. 



f. rosariformis. nov. form. PL IV . fio-. 3. 



o 



Ramis longis, sursum attenuatis, articulis brevissimis diametrum 

 subtequantibus rotundis. 



It is stout and robust in its appearance and attains the height 

 of 5-12 cm. ; the colour is rosy purple while living. The articuli are 

 thoroughly cylindrical, except the ramiferous ones which are sub- 

 compressed cuneate. The conceptacles are large, measuring 0.8 mm. 

 in diameter. 



A side branch is often found prolonged to form ;i sort of fastening 



