154 ACT.EON. 



Var. fascia-umca-alba Scac. Shoulder band only present. 

 Var. wiicolor Scac. (efasc'mta Monts.). Uniform grayish roseate^ 

 without bands (pi. 19, f. 10). 



A. AMABiLis AVatson. PI. 20, figs. 27, 28. 



Shell 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 : Longitudini\ls — there are very 

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

 about 20, on the penultiniate 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. Color translu- 

 cent 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,patulousor very slightly guttered 

 in front of the pillar point. Outer lip 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 more than a slight swelling; the ])illar 

 itself is very slightly oblique, and is straight, narrow Avith a sharp 

 edge behind which is a very slight and shallow furrow. Alt. 0*16 

 in.; diam. 0*1. Penultimate whorl height 0"04. Mouth height 

 0-08, breadth 0-05. ( Wats.). 



West of Azores, 1000 fms. ; offPalma, Canaries, 1125 fms. 



A. amahilis Wats., J. L. S. Lond. xvii, p. 287 ; Chall. Gastr., p. 

 629, pi. 47, f. 4. 



This species is a little like Adeeon austrinus Watson ; but com- 

 pared to that the form is slimmer, the whorls are more laterally 

 compressed and less convex, the shell is smaller, and the apex is 

 more truncated. It a good deal resembles Actceoii levidensis S. 



