THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY. 



[SECOND SERIES.] 



«« perlitora spargite museum, 



Kaiades, et circOm vitreos considite foutes : 

 Pollice virgineo teneros h'lc carpite flores : 

 Floribus et pictum, divte, replete caiiistrutn. 

 At vos, o Nyniphae Craterides, ite sub undas ; 

 Ite, recurvato variata corallia trunco 

 Vellite muscosis e rupibus, et mihi conchas 

 Ferte, Deae pelagi, et pingui conchylia succo." 



N.PartheniiGiannettasuEc\.\. 



No. 67. JULY 1853. 



I. — Remarks on some Alga belonging to the Genus Caiilerpa. 

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



[With two Plates.] 



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

 Peninsula of India are various Caulerpa. Of described species 

 the following may be enumerated : Caulerpa Lessoni, Bory ; 

 plumaris, Ag. ; scalp ellif or mis, Ag. ; sedoides, Ag. ; Chemnitzia, 

 Lamour.j and Freycinetii, Ag. 



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

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

 scribed by Agardh as var. /3. crassifolia of his Cauleipa taxifolia ; 

 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 Linnseus. I am, however, very sceptical of its having 

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

 possess from Agardh and Hornemann. 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, parallelis .... basi apice- 



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

 Ann. 6; Mag. N. Hist. Ser. 2. Vol. xii. 1 



