162 ACTION. 



Spire elevated, with two punctate lines. Columellar fold oblique, ] 

 but little projecting; lip thick. Alt. 4'75, diam. 2'25 mill. ; aper- 

 ture 2-75 mill. high. (Morcli). 



St. Thomas (Riise), one specimen. 



A. splendidula MORCH Malak. Blatter xxii, p. 170, 1875. 

 A. CUMINGII A. Adams. PL 19, figs. 16, 17. 



Shell oval, subcylindrical, flesh colored ; spire exserted ; whorls 

 convex, transversely sulcate, the sulci beautifully cancellated, lon- 

 gitudinally striated. Columella with a single fold below. Aperture 

 white inside, the lip acute, subsinuous above. (Ad.}. 



Rio Janeiro (Martin) ; Porto Eico (Krebs) ; 5 miles off Cape 

 Florida, in 8 fms. (Rush). 



A. cumingii A. AD., P. Z. S. 1854, p. 59. MORCH, Mai. El. xxii, 

 p. 169. DALL, Blake Rep. Moll., p. 40. Tornatella cumingii RVE., 

 Conch. Icon, xv, f. 12. Tornatella textilis GUPPY, Geol. Mag 

 1874, p. 407, pi. 16, f. 4. 



This differs from A. delicatus by its stumpier form, coarser an< 

 ruder subcancellate striation, more prominent fold on the columella 

 and particularly by its nucleus which, though small, is swollen am 

 set on the peek of a very acute spire like a swollen terminal bud o 

 a twig. In delicatus the nucleus, instead of appearing larger, is con 

 siderably smaller than the whorl in front of it, in which it is als 

 partially immersed. (Dall). 



A. DELICATUS Dall. PL 20, fig. 35. 



Shell ovate, white, or suffused with rose pink, not in bands bu 

 generally, or in longitudinal flammules, with usually a white mar 

 gin in front of the suture ; there are six or seven whorls, the las 

 more than half the length of the shell, regularly rounded an 

 grooved by, on the last whorl, 20-30 strong, rather deep, coarsel 

 punctate grooves between rounded interspaces; lines of growt 

 quite preceptible, suture somewhat appressed, not channelled ; apei 

 ture more than half as long as the shell ; outer lip thin, inner li 

 hardly callous, columella straight, without any chink behind 

 and bearing a single moderate fold. Nucleus small, mostly im 

 mersed in the succeeding whorl, apex not acute, surface usually no 

 polished, but a little less coarsely sculptured than that of A. cum 

 ingii Adams. Lon. of the largest specimen, lO'O ; max. lat. 5*6 ; Ion 

 of aperture, 6'0 mill. (Dall}. 



