igig-] H. H. GoDwiN-AusTRN : Generic position of H. distincta. 201 



parallel grooves extend upwards towards the upper surface of 

 the foot, the side of which is very smooth. The mucous gland 

 is not large, not by any means so largely developed and conspicuous 

 as in Hemiplecta floweri, E. A. Smith (plate iv, fig. i). There is not 

 a vestige of either a right or left shell lobe as in Ariophanta 

 {Nilghiria) ligulata , Fer.,pl. xcviii,fig. 16, Moll. India. In text-fig. 

 iB the position is indicated where they would be at [a). The 

 mantle margin is simple, straight and continuous from the rectum 

 round to the posterior margin above the keel of the foot like 

 a narrow hem following the peristome. 



The right dorsal lobe {rdl.) is large and triangular in shape, the 

 left is in two very distinctly separated portions, very irregular 

 in breadth, the anterior about 15 mm. long by, 4 mm. broad. 



■i •/' ''^- M ' ' '-^*^ ~^ '"" 





'X-m-^. 



Fig. 2. — Koratia distincta (Pfr.) 



A. Centre tooth and adjacent admedians, X 170. 

 A'. Inners and outside marginal teeth, X 170. 



B. Jaw, X 5 8. 



C. Genitalia, X 2. 



al.gld., albumen gland ; am. or., amatorial organ ; ep., epiphallus ; gen. 

 a/>., generative aperture ; Jt'. oviduct ; /"., flagellum ; rm., retractor muscle ; 

 rmp., retractor muscle penis ; vd., vas deferens ; sp., spermatheca. 



The branchial sac is very ample, the renal organ very long, narrow 

 and white in colour. 



Genitalia (text-fig. 2 C). — The amatorial organ {am. o;'.), com- 

 paratively speaking, is of great length, quite 40 mm., evenly 

 cylindrical, having a retractor muscle {rm.) at its somewhat blunt 

 end. The penis in comparison to this last organ is short ; a 

 straight tube leads from the generative aperture to the retractor 

 muscle {rmp.) , where it bends sharply and enlarges into a rounded 

 mass, a sort of kink in the tube contracting again at the 

 short epiphallus {ep.) leading onto the junction of the vas deferens 

 {vd.), and here a short oval mass represents the usual kalk-sac or 

 flagellum (/.). 



The spermatheca {sp.) is globose, short and sessile, thus 

 corresponding to the smallness of the kalk-sac and to the probable 

 small size of the spermatophore. The vas deferens is long, the 



