250 L.VXD AND FRESHAVATEB 



No. 514 B.M. Coll. (G sp.)- North Cachar, No. 502 B.M. Coll. 

 (6 sp.). Burrail Eange, No. 520 B.M. Coll. (8 sp.). Dharmkal, 

 Cachar, No. 1748 B.M. Coll. (4 sp.). Silcuri, Cachar, No. 1749 

 B.M. Coll. (4 sp.). Silchar, Cachar, No. 1771 B.M. Coll. (2 sp.). 

 Nemotha Hill, No. 1753 B.M. Coll. (3 sp.). South Sylhet, 

 No. 682 B.M. Coll. (10 sp.). 



Macrochlamys yesica, var. anomala, n. (Plate CXVUI. 

 figs. 4-4 c.) 



Localiti/. Maosmai, near Cherra Poonjee, Khasi Hills {Godwin- 

 Austen). 



Shell glassy, globose, perforation almost hidden ; sculpture none ; 

 colour ochraceous brown ; spire rather high, convex on side ; suture 

 well adpressed ; whorls 5, those above very convex, regularly 

 increasing, the last rounded on the periphery and somewhat swollen ; 

 aperture oblique, rotundately oval ; peristome thin, curved on 

 upper margin, straight below ; columellar margin very slightly 

 thickened, oblique. 



Size: uiaj. diam. 13"3, min. 11*8; alt. axis 9-5; alt. body-whorl 

 4"6 mm. 



A dried up animal was soaked out, but very little could be 

 satisfactorily seen ; the spermatophore was, however, beautifully 

 preserved, this was figured on Plate XCIV., Part IX. Moll. Ind., 

 lig. 2, as that of lecythis, Bs., vide Faun. Brit. Ind., Moll. p. 98, 

 No. 142. The distinctness of the Gangetic Delta, and Eastern 

 Bengal and Assam shells of this type had not then been noticed. 



Macrochlamys vesica, var. oglei, n. (Plate CXIX. figs. 1-1 c, 

 and Plate CXX. figs. 2-2 h ; Plate CXXII. fig. 5.) 



Locality. Diyung Valley, Singpho Hills {M. T. OgJc). 



Shell narrowly perforate, in other respects similar in form to 

 typical i^^sj'f a, somewhat smaller; sculpture quite smooth ; colour 

 pale ochraceous ; whorls 5 ; columellar margin oblique, slightly 

 reflected and very nearly covering completely the umbilicus. 



Size: maj. diam. 13"25, min. 12-0 ; alt. axis 5'0 mm. 



Animal pale ochraceous throughout, no markings on the visceral 

 sac of any kind ; right shell-lobe very long and narrow, left very 

 narrow and elongate (Plate CXXII. fig. 5j ; the left dorsal lobe in 

 two parts, both narrow. 



In the genitalia (Plate CXX. fig. 2) the amatorial organ is large, 

 cylindrical, pointed at the free end ; the male organ has a very 

 short blunt kale-sac in which an immature spermatophore was 

 forming (fig. 2 a), the epiphallus is long, there is a short coiled 

 caecum to which the retractor muscle is attached on the outside 

 edge. The spermatheca is long, swollen at the anterior end. 



The formula of the radula (fig. 2 h) is 



47 . 2 . 12 . 1 . 12 . 47 

 or 61 . 1 . 61. 



