Fossils from the Miura Peninsula and its Immediate North. 45 



Genus Jul mete. Kroyer. 

 •29. Admete viridula (Fabricu 

 Pl. II. Fig. 5. 



Admete viridula. Saks, Moll. Nbrv. Arct., p. 402. Middendorf, Moll. Ross., IE, pl. 10, 

 3-4. Kobelt, in Syst. Conch. Cab. von Martini und Chemnitz, vol. IV, part 4, «Tenus Caneel- 



p. 98, pl. 24, fig?. 1-7. Dunkee, Index Moll. Mar. Jap., p. 104. Tbyoh, Man. Cone: 

 YE. p. 84, pl. YH, figs. 23-28. 



Admete crispa. Mollee. Ind. Moll. Groenl., p. 15. 



Tritonuins viridulum. Fabeicics, Fauna Groenl., p. 402. 



CaneeUaria viridula Sowebbt, Thes. Concl. U, p. 449, pl. 96, fig. 102. 



The shell is thin, ovately conical and subturrete; the whorls 

 are about six in number of which the upper two are smooth 

 and rounded: the other whorls are convex, obtusely and faintly 

 angulated somewhat above the middle, with the surface above it 

 sloping, and below it a little convex. Spirally - 1; striae 



distinct, but inequidistant, unequal, the largest one being just at 

 the place of angulation above which in the penultimate wl 

 there is a single hue stria, while there are four subequal ones 

 below. In the body-whorl which is quite swollen, the angle is 



r indistinct, with thirteen striae below it. which are at first 

 rather distant, but get closer and finer toward the base. Lines 

 growth unequal and coars - - in some place- as to look 



like longitudinal riblets; and indeed in the upper whorls they are 

 really changed into such. Aperture ovate: outer lip -harp with 

 margin smooth: columella arcuate with a thin callus spread over 

 it and with three indistant oblique folds, the middle one of which 

 is the weakest. Canal indistinct. Only a single specimen. 

 Height 8,5 milhm. Diameter 5 rnillim. Length of aperture 4 

 mil lim. 



This species is said to be very variable in shape. Tryox in 

 his Manual of Conchology considers CaneeUaria subangvlosa Wood 

 of the Crag. Admete èuccînoides Couth, oftheeasl - America 

 and Admete costettif era Sow. (habitat?) as identical with the près 

 species. Anyhow the variability is certain, and our only speci- 

 men looks most like the one shown in fig. 4. pl. 24 of Kobelt. 



Fossil occurrence in Japan. — Koshiba Zone (Koshiba). 



