Sou(/i-A/ricjn Land- Moll tisca, 135 



It was iiiifortiiiiatc fo Hiid the spirit all evaporati'tl in this 

 tube, so that the animals were driecl up ami the genitalia 

 couhl not be made out alter the soaking it was subjected to ; 

 but enougii was seen to place it in its generic position. 



Pdtatus trotter iana, Bs. (PI. V. figs. 2, 2 a.) 



Locality not given on tube. 



First specimen dissected : animal brown, as also the 

 ground-colour of tiie visceral sac, but very little of the 

 ground-colour is to be seen ; the greater part of the surface 

 on the upper side is covered with large isolated patches of 

 milky white, while on the lower side the same colour occurs 

 as small spotting. A black band margins the liver, another, 

 less distinct, the rectum. 



The right shell-lobe is short and triangular, the left shell- 

 lobe is very small. The lobe above the mucous pore is 

 fairly large (PI. V. fig. 2 a). 



'I'eetli of the radula are similar to those of Microkerhus 

 I'Oudoeni'is ; marginals evenly bicuspid. 



Radula formula : 05 . 2 . 11 . 1 . 11 . 2 . 65, or 78 . 1 . 78. 



Jaw (PI. V. fig. 2) with central projection. 



Fdtatus trotttriana, 13s. (PI. VI. figs. 1-1 c.) 



Locality. Cape Province [Capt. M. Connolly) ; two 

 specimens, no. 78. 



Shell globosely conoid, imperforate; sculpture smooth, 

 crossed by a few lines of growth, shows indistinct decussation 

 near protoconch, which is smooth ; colour pale ochraceous, 

 more intense at the apex ; spire high, conical, apex blunt 

 and rounded] suture well impressed; whorls ■!, rapidly in- 

 creasing, the last very ample, very convex ; aperture lunate, 

 higher than breadth, subvertical ; columellar margin weak, 

 not reflected. 



Size: major diameter 13'5, minor 12'25 ; alt. axis S'5 mm. 



Animal (^Pl. VI. fig. 1, 1 a). — Vitceral sac plain, no 

 spotting ; a band of pale brown over kidney, in one specimen 

 another nmch paler next the rectum at the apex dark brown, 

 with some milky white extending over half the upper surface. 

 The right shell-lobe (PI. VI. fig. 1) very small, the left 

 (Hg. \a) quite minute, just a remnant. Foot short, very 

 distinctly divided, lobe over the mucous gland very small. 



The genitalia (PI. VI. figs. Ih, 1 c) were not at the fullest 

 stage ot maturity, yet sufficiently so to show all important 

 parts and that they are of the type of the subfamily. The 

 penis just below the retractor muscle is closely folded into 



