THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY. 



[SECOND SERIES.] 



" perlitora spargite museum, 



Naiades, et circClm vitreos considite foiites : 



Pollice virgineo teneros h'lc carpite flores : 



Floribus et pictum, divic, replete canistrum. 



At vos, o Nymphae Craterides, ite sub undas ; 



Ite, recurvato variata corallia trunco 



Vcl'lite muscosis e rupibus, et niihi conchas _ 



Ferte Dek pelagi, et pingui conchylia succo. .. r- i i 



No. 67. JULY 1853. 



I. Remarks on some Algce belonging to the Genus Caulerpa. 



By R. K. Greville, LL.D. &c.* 



[With two Plates.] 



Among the Algge collected by Dr. Wight on the shores of the 

 Peninsula of India are various Caulerpce. Of described species 

 the following may be enumerated: Caulerpa Lessoni, Bory; 

 2^lumaris, Ag. ; scalpelliformis, Ag. ; sedoides, Ag. ; Chemnitzia, 

 Lamour., and Freycinetii, Ag. , • v t 



There are also two or three other species upon which 1 pro- 

 pose to offer some remarks. The first of these is the plant de- 

 scribed by Agardh as var. ^. crassi/olia of his Caulerpa taxifoha ; 

 at least there can be no doubt that it is the form quoted by him, 

 and figured by Turner in ' Historia Fucorum/ tab. 53, as Fucus 

 pinnatus of Linn£Eus. I am, however, very sceptical of its having 

 any specific relation to C. taxifolia, typical specimens of which I 

 possess from Agardh and Horneniann. The frond of the latter 

 is pinnated in a definite, symmetrical and uninterrupted manner, 

 answering well, in fact, to Agardh's description : " pinnis sequa- 

 libus simplicibus fere horizontalibus, parallehs .... basi apice- 



* Read before the Botanical Society of Edinburgh, April 14, 1853. 

 Ann. 6)- Mag. N. Hist. Ser. 3. Vol. xii. 1 



