140 



columellar margin with about 2 1 teeth and a crenulated callosity at its upper part, bordering 

 the posterior, rather wide sinus; anterior sinus slightly larger and produced, columellar margin 

 excavated interiorly, towards the anterior sinus ; margins of the aperture granulosa in the interstices. 

 Long. 12, lat. 9, alt. 8^4 Mill., smaller specimen Long. 9Y3, lat. 7^3, alt. 6Y3 Mill. 



forma minor. PI. XI, fig. 4. 



Stat. 95. 5°43'.5 N., ii9°4o'E. Sulu Sea. 522 M. Stony bottom. 4 Spec. 



Stat. 315. East of Sailus-Besar, Paternoster-islands. Up to 36 M. Coral and Lithothamnion. i Spec. 



Two specimens from Stat. 95 are still smaller, being only 7^/„ Mill, in length, but agree 

 in most respects, in sculpture with the type, however the ribs are slightly coarser, the teeth of 

 the right margin less numerous (15 and 17), the other specimens and that from Stat. 315 are a 

 little doubtful, as they are still considerably smaller, length only 6 Mill., the aperture is not so 

 large and the right margin thicker; as they are dead shells, I prefer to keep them under one 

 name with the variety, instead of describing a new species on a few gradual differences. This 

 species with its variety, differs from the former one, by its much more numerous ribs with 

 numerous intermediate ones, the larger number of teeth and inflated shape. 



Erato Risso. 



I. Erato gallinacea (Hinds Mss) Reeve. 



Reeve. Conch. Ic. Vol. XV, Erato, fig. 7. 



Weinkauff. Martini-Chemn. Conch. Cab. Ed. II, Vol. V, Erato, p. 150, PI. 24, fig. 14, 15. 



Tryon. Man. of Conch. Vol. V, p. 10, PL 4, fig. 46. 



Stat. 37. Sailus Ketjil, Paternoster-islands. Up to 18 M. Coral and coralsand. 2 Spec. 

 Stat. 47. Bay of Bima, near South fort. 55 M. Mud with patches of fine coralsand. i Spec. 

 Stat. 258. Tual, Kei-islands. 22 M. Lithothamnion, sand and coral, i Spec. 



The specimens agree very will with the figures and descriptions, but they have small 

 granules on the spire and towards the base of the shell. 



Fam. Amphiperasidae Adams. 

 Amphiperas Gronovius. 



Amphiperas ovmn Linne. 



Linne. Syst. Nat. Ed. X, p. 725, N° 327. 



RUMPH. Amb. Rariteitkamer, p. 115, PI. 38, fig. Q. 



KlENER. Coq. Viv. Vol. I, Ovula, p. 3, PI. i and PI. 3, fig. 5 (ovifonnis). 



Reeve. Conch. Ic. Vol. XV, Ovulum, fig. 3. 



Weinkauff. Martini-Chemn. Conch. Cab. Ed. II, Vol. V, Ovula, p. 168, PI. 44, fig. 2, 4, 5. 



Tryon. Man. of Conch. Vol. VII, p. 246, PI. i, fig. 11, 12. 



Stat. 213. Saleyer. Reef, i Spec. 



Stat. 231. Amboina. Reef, i Spec. 



Stat. 301. Pepela-bay, East coast of Rotti-island. 22 M. Mud, coral and Lithothamnion. I Spec. 



