AUT. 18 SMALL SHELLS DREDGED BY " ALBATROSS '^ DALL 79 



indicated. On the second 12 are present, 14 on the third to fifth, 

 16 on the sixth, 18 on the seventh and eighth, while on the last two 

 turns they are quite obsolete. Intercostal spaces shallow, about as 

 broad as the ribs. Sutures moderately constricted. Periphery of 

 the last whorl well rounded, somewhat inflated. Base short, well 

 rounded, slightly inflated. The entire surface of the shell marked 

 by fine incremental lines and microscopic, closely spaced spiral stri- 

 ations. Aperture broadly oval; posterior angle neither acute nor 

 obtuse; outer lip thin, showing the external sculpture within; inner 

 lip slender, curve, reflected over the base for about half its length, 

 provided with an obsolete fold near its insertion. 



The type. Cat. No. 108066, U.S.N.M., comes from United States 

 Bureau of Fisheries Station 2668 in 294 fathoms, sandy bottom, 46.3° 

 bottom temperature, off Fernandina, Fla. It has 10.5 postnuclear 

 whorls and measures: Length, 7 mm.; diameter, 1.8 mm. 



Cat. No. 360171, U.S.N.M., contains about 50 additional specimens 

 from the type locality. 



T URBONILLA (STRIOTURBONILLA) RHEA, new species 



Shell elongate conic, cream yellow. Nuclear whorls small, two 

 and a half, forming a very depressed helicoid spire, the axis of which 

 is almost at right angles to that of the succeeding turns, in the first 

 of which it is about one-fifth immersed. Postnuclear whorls well 

 rounded, almost appressed at the summit, marked by rather strong, 

 slightly sinuous axial ribs, of which 16 occur upon the first to fifth, 

 18 upon the sixth, and 20 upon the remaining whorls. Intercostal 

 spaces about as wide as the ribs. Suture rather strongly constricted. 

 Periphery of the last whorl well rounded. Base short, strongly 

 rounded. The entire surface of spire and base marked by fine incre- 

 mental lines and exceedingly fine microscopic spiral striations. 

 Aperture subquadrate; posterior angle obtuse; outer lip thin, show- 

 ing the external sculpture within; inner lip thin, somewhat flexuous, 

 reflected over and appressed to the base for half its length, provided 

 with an obsolete fold near its insertion. 



The type. Cat. No. 108055, U.S.N. M., comes from United States 

 Bureau of Fisheries Station 2668, in 294 fathoms, sandy bottom, 46.3° 

 bottom temperature, off Fernandina, Fla. It has 11.5 postnuclear 

 whorls and measures: Length, 6.2 mm.; diameter, 1.3 mm. 



Cat. No. 360172, U.S.N.M., contains about 40 specimens from the 

 type locality. 



TURBONILLA (STRIOTURBONILLA) SJRENA, new species 



Shell large, robust, broadly elongate conic, milk white. Nuclear 

 whorls two and a half, forming a rather large, depressed helicoid spire, 

 the axis of which is at right angles to that of the succeeding turns, 

 in the first of which it is about one-third immersed. The left side of 



