DIPLOMMATINA. 2S7 



Genus DIPLOMMATINA, Benson. 



Tentacles long and filiform ; eyes sessile on their posterior 

 part at the base. Foot short. 



Operculum thin, shelly ; whorls few, with thin prominent 

 lamella? on their external edges. 



Shell thin, sub-ovate, whorls convex, the last sub- ascen- 

 dent; aperture sub-circular; inner lip with a spiral fold; 

 peristome double; outer lip expanded. 



Ex. D. folliculus, Pfeiffer, pi. 86, fig. 5. Operculum, 

 D. folliculus, fig. 5, a, 5, h. 



Mr. Benson, in his account of this genus, mentions a 

 peculiarity of the eyes, from which he has derived the 

 generic name. These organs are situated on the hind part 

 of the tentacles at their base, and are composed of two 

 lobes, one lobe deeply seated in the tentacle and larger than 

 the other lobe, which is a small black point coming to the 

 surface on the outer side of the larger lobe. The species 

 abound in masses of decayed, fallen leaves, and under stones 

 in damp situations beneath trees, on the shady sides of the 

 mountains at Simla, Mussoorie, and Landour of the 

 Himalaya ; the sub-genus Paxillus, founded on a smooth, 

 reversed species, is from the Island of Borneo. 



Species of Diplommatina. 



Bensoni, A. Adams. folliculus, Pfeiff. 



Can tori, Pfeiff'. Huttoni, Pfeiff. 



capillacea, Pfeiff. Macgillivrayi, Pfeiff. 



costulata, Bens. minor, A. Adams. 



