Mr. C. C. Babington on some species of Rubi. 123 



hastalis, not found either in the London clay or the Coralline 

 Crag. 



I have been recently favoured by Dr. W. B. Clark of Ipswich 

 with the sight of a specimen of the tooth of C. Megalodon, which 

 extends the size of the species to a considerable extent. The 

 length of this tooth from the base line to the apex is 6 inches, 

 which, by the same mode of estimation from the proportions of 

 Carcharias glaucus, gives a horizontal gape of 4 feet 1 inch, a 

 vertical one of 5 feet 1 inch, and a length of 84 feet 7 inches to 

 the fish. 



XL — Descriptions of Rubi. By Charles C. Babington, M.A., 

 F.R.S. &c.* 



In the third edition of the ' Manual of British Botany ^ I have 

 endeavoured to arrange and characterize the Ruhi in a better 

 manner than it was done in my former publications upon that 

 perplexing genus, and as there are a few species which have not 

 been brought under the notice of botanists in detailed descrip- 

 tions, it seems desirable to publish such accounts of them. 



1. Rubus Leesii (Bab.) ; caule suberecto tereti, aculeis setaceis rectis, 

 foliis 3-natiSy foliolis omnibus rotundato-ovatis subsessilibus imbri- 

 catis, aculeis ramorum jloriferorum pedicellorumque paucis seta- 

 ceis basi bulbosis, floribus axillaribus terminalibusque racemosis. 



R. Idaeus y. Leesii, Bab. Syn. Rubi, 6. 



R. Leesii, Steele Handb. 60 ; Bab. Man. ed. 3. 92. 



Creeping very extensively. Stems erect, 2-3 feet high, clothed 

 with short deflexed hairs and numerous very slender setaceous 

 straight prickles with bulbous bases. Leaves all ternate; sti- 

 pules subulate; petioles furrowed, with a few small prickles; 

 leaflets similar, roundly ovate, dark green and rugose above, 

 white and cottony beneath, midrib with few or no prickles, 

 coarsely crenate-serrate-apiculate ; lateral leaflets subsessile, over- 

 lapping the very shortly stalked terminal leaflet. 



Flowering shoots short, clothed with hairs and prickles like 

 those of the barren stem. Leaves mostly simple, cordate, 

 slightly 3-lobed, very coarsely crenate-serrate-apiculate, green 

 above, greenish white beneath ; stipules very slender, subulate ; 

 petioles furrowed above ; ternate leaves of three sessile obovate 

 leaflets. Raceme lax, few-flowered, one or two of the lowest flowers 

 axillary. Peduncles with very slightly curved subulate prickles. 

 Sepals oblong, often more than five in number and then nar- 



* Read before the Botanical Society of Edinburgh, January 8, 1852. 



