REPORT ON THE GASTEROPODA. 629 



large, blunt and flattened, with, a very slight inversion of the extreme tip. Wlwrls 

 nearly 5, very little convex ; the last is rather large and somewhat tumid. Suture 

 rather oblique, slight, scarcely impressed. Mouth oval, pointed above, a little oblique in 

 its direction. Outer lip sharp and thin, with its edge crenulated by the sculptural spirals ; 

 in direction it is straight above, well curved on the base, where it is very slightly emar- 

 ginate. Inner Up : very slightly convex on the body, it passes gradually into the short 

 concave pillar, at the base of which there is only the faintest trace of a tooth; its edge is 

 sharp and patulous, with a minute chink behind it. H. 0*18 in. B. O'l. Penultimate 

 whorl, height 0-06. Mouth, height O'll, breadth 0'07. 



This species slightly resembles Actccon 2^usillus (Forbes), from the Mediterranean and North 

 Atlantic ; but the spirals in that species are stronger, and are pit-marked ; the suture is much 

 stronger and more channelled, and the body-whorl is more barrel-shaped. 



7. ActcEon amabiliSyW&tson (PI. XLVII. fig. 4). 



Adceon amabilis, Watson, Prelim. Report, pt. 18, Joura Linn. Soc. Lond., vol. xvii. p. 287. 



Station 73. June 30, 1873. Lat. 38° 30' N., long. 31° 14' W. West of Azores. 



1000 fathoms. Pteropod ooze. Bottom temperature 39°"4 F. 



Station 85. July 19, 1873. Lat. 28° 42' N., long. 18° 6' W. Off Palma, Canaries. 



1125 fathoms. Volcanic mud. 



Sliell. — Small, ovate, white, with flattened whorls, a subscalar spire, a very blunt apex, 

 a pear-shaped smallish mouth, and a very slight tooth on the pillar. Sculpture : Longitu- 

 dinals — there are very faint hair-like lines of growth. Spirals — there are on the last 

 whorl about 20, on the penultimate whorl about 8 rather strong and equal furrows stippled 

 with roundish-oval pits ; they become more crowded and weaker toward the middle of the 

 base : just below the suture the first furrow is minutely and slightly beaded, and it with 

 the next one or two is strong and these are crowded ; the flat surface which parts them is 

 somewhat .broader than the furrows. Colour translucent and subglossy white. Spire 

 conical, high, scarcely scalar. Apex blunt and truncated ; the extreme tip is a very little 

 inverted. Whorls 5, very slightly shouldered just below the suture : round the top there 

 is a very feeble constriction ; below this the whorl is conical, and in profile flat on the 

 sides; the last whorl is a very little tumid with a produced base. Suture very little 

 oblique, strongish and well marked, but not channelled. Mouth pear-shaped, pointed 

 above, a little oblique in direction, patulous or very slightly guttered in front of the pillar 

 point. Outer Up straight and parallel to the axis, and a little contracted above, arched 

 and patulous in front. Inner lip slightly convex on the body, on which there is a thin 

 but distinct glaze with a defined edge. There is a slight angulation at the junction of 

 the body and the pillar, near the top of which is a very faint tooth amounting to no 



