THE NAUTILUS. 143 



regularly rounded, posterior margin more or less obliquely truncated 

 on the right side; very thin, diaphanus, translucent, white, shining, 

 polished; lines of growth regular, but minute; anterior surface with 

 faint, irregular, radial ripples; apex about half way between the cen- 

 ter and posterior margin, obtuse, scarcely projecting and slightly 

 turned to the right; anterior slope but slightly convex; posterior 

 nearly straight ; a little concave in the center; right slope slightly 

 convex; left nearly straight. 



Length 4 ; width 2.2 ; alt. 1 mm. 



Type locality : Equeefa River, Natal (Burnup). Also, Brack 

 Kloof River, Grahamstown, Cape Colony (Farquhar). 



Type, No. 36007, coll. Walker. 



VI. Ancylus connollyi n. sp. 



Shell small, subconical, oval, lateral margins nearly parallel, the 

 left slightly more convex, anterior and posterior margins regularly 

 rounded; thin; translucent, light horn-color, almost white; growth- 

 lines fine, rather irregular, anterior surface somewhat wrinkled trans- 

 versely ; apex about one-fifth from the posterior margin, obtuse, 

 prominent, slightly turned to the right ; anterior alone slightly con- 

 vex ; posterior slightly concave, nearly straight ; lateral slopes nearly 

 straight, the right a little convex. 



Length 3.75; width 2.2; alt. 1.5 mm. 



Type locality: Black River, Maitland, Cape Colony (Connolly). 

 Also, King William's Town Road Dam, Grahamstown, Cape Colony 

 (Farquhar). 



Type, No. 36008, coll. Walker. 



VII. Ancylus equeefensis n. sp. 



Shell small, depressed, oval, the left margin slightly more curved 

 than the right; anterior and posterior margins regularly rounded ; 

 thin, light horn-color ; lines of growth fine and regular ; apex close 

 to posterior margin, very obtuse, but not prominent, distinctly 

 turned to the right; anterior slope straight, except as it slightly 

 curves towards the apex, posterior nearly straight from below the 

 apex for two-thirds of its length, thence oblique to the margin ; right 

 slope slightly convex; left a little concave. 



Length 3.75 ; width 2.1 ; alt. 1 mm. 



Type locality : Equeefa River, Natal (Burnup). 



Type, No. 36009, coll. Walker. 



