MOLLUSCA OF INDIA. 215 



keeled, pointed at the extremity ; mucous glaud narrow, linear ; 

 peripodial grooves strongly marked above a broad distantly fringed 

 margin. Sole of foot (fig. 3 c) with a central area. 



The shell-lobes large and separate ; the right (fig. 3 d) spreading 

 from a thickened part near and above the respiratory orifice, black 

 in the centre, with a single central vein throwing out a few 

 veinlets ; the left (fig. 3 a) is only spotted with black. Anterior 

 and posterior left dorsal lobes ; the last very small and distant from 

 the former. 



The generative organs are very small and difficult to get out 

 entire : the penis was seen, of the type of fonnosana ; a very long 

 oviduct. 



The jaw (Plate CXVI. fig. 6 a) is nearly straight in front, thin 

 and feeble. 



Formula of radula (fig. 6) : — 



65 . 2 . 10 . 1 . 10 . 2 . 65 

 77 . 1 . 77 



The above description of the animal of the Formosan species 

 fulgida shows there is no relationship whatever to Macrochlamys, 

 but that it belongs to a very distinct group of the Zonitidse. It is 

 most difficult to assign to it a satisfactory generic position. In 

 fulgida there is a considerable departure from F. formosana var. 

 hypograpta and P. iviUei/ana, although all three have a broad right 

 shell-lobe, with central vein-like markings. In the radula of fulgida 

 the lateral teeth are far more numerous and pectinate, like those of 

 Durgella : in this respect they recall the radula of Durgella2 sumba- 

 ensis, from the Dongo Mountains {vide ' Land & Freshw. Moll. India,' 

 vol. ii. p. 66, Plate LXXIX. figs. 6-8 b) ; and I pointed out (p. 67) 

 how this radula difl["ered from that of true Durgella as represented by 

 that of Durgtlla levicula &e. According to the Sarasins, species with 

 this form of radula find a place in Lamprocystis. In their ' Mollusca 

 of Celebes,' p. J 29, the so-called MacrocUamys minuia of v. Martens 

 is referred to this genus ; and they refer to Wiegmann's excellent 

 figures, which show that the radula of minuta is quite like that of 

 fulgida. 



It is probable that M. fulgens of Gude, from the Lu-chu 

 Islands, is very closely allied to Lamprocystis fulgida, and must for 

 the present be placed in this last-named genus. In order to show 

 more clearly the differences between the two shells, I give here 

 Mr. Gude's description of M. fulgens ; and I may say his figures of 

 it (pi. viii, figs. 24, 25, & 26), although small, are exceedingly 

 accurate. 



Maceochlamys ftjlgens, Gude, Proc. Malacol. Soc. Lend. vo). iv. 

 no. 2, p. 75, pi. viii. figs. 24-26. (Plate CXVII. fig. 8.) 



Original description of Macrochlamys fidgevs, Gude: — 

 " Shell perforate, trochoid, thin, shining, pellucid, daik corneous. 

 Spire depressed, apex obtuse, suture linear, margined. ^Yholls 4, 

 increasing rather suddenly; the last twice as wide as the penulti- 



