324 JOURNAL, BOJIBAY NATUEAL HISTORY SOCIETY, Vol. XII. 



specimens we selected from my herbavium, in Calcutta, by Bengal 

 artists, under the supervision of Dr. D. Praiu, the Superintendent 

 of the Royal Botanic Garden, Calcutta, who also kindly adopted 

 the undertaking by his predecessor, Sir George King, to have the Plates 

 lithographed for me (and the Bombay Natural History Society) in Cal- 

 cutta where, as is well known from the numerous examples in the 

 " Annals of the Royal Botanic Garden, Calcutta/' such work is very eflfi- 

 ciently done. My very best thanks are due to Dr. Plain for having 

 thus so materially contributed to the preparation of this paper, 1 am 

 also greatly indebted to him, as well as to Sir George King and Mr. J. 

 F. Duthie, for their help in securing the co-operation of the Bombay 

 Natural History Society for the publication of my paper in their 

 valuable Journal. To Mr. Duthie I must also ei' press my grateful 

 thanks for having passed the final proofs for the press at Bombay, 

 which has saved many weeks of time. Additional Plates will, 1 hope, 

 be given from time to time, as I may be able to get them prepared ; 

 the Society in Bombay is not wanting in liberality in that respect. 



LIST OF ABBREVIATIONS. 



BoTAXicAL Terms. 



Caud. : caudcx, from which arises the frond or stipes. 



llUiz. : rhizome, a creepiug or climbing stem, taking the place of a caudex. 



St. : stipes, or stipites, the stallc of the frond. 



Fr. : Frond, or fronds, exclusive of the stipes. 



Jlh. : rhachis, the continuation of the stipes up the middle of the frond to the ter- 

 minal point. 



Ser. Ilk. : secondary rhachis, or rhachises, the main branch or branches of the 

 rha^iis. 



Finn. : pinnae, the primary complete divisions of a frond. 



Finnl. : pinnule or pinnule", the secondary complete divisions of a frond, or com- 

 plete divisions of a pinna. 



,Si'{jm, : segments, the divisions of a pinna, or ox a pinnule, when more than mere 

 teeth, lobes, or crenations. 



r<!?j. : venation, the system of veins in a frond, pinna, pinnule, or segment. ' 



Costa : the main vein of a group proceeding from a rhachis. 



Iiivol. : involucre, the covering (cup or cap) which incloses and protects the sorus. 



Measures of Lexgth. 

 Ft. : foot or feet. 

 In. : inch or inches. 

 X. : long, thus 1 in. 1., 1 ft. 1. 

 IF : wide ] ^jjyg J .^ ^^ ,^j. ^ jj^_ ^^ 

 Br. : br(iad I ' 



5-7000' : 5000 to 7000 feet altitude. 5.".-7000' : 5600' lo 7000'. 



