20 CALYCIA. 



slightly COHTCX, the last convex at periphery and beneath, scarcely 

 descending in front. Aperture but slightly oblique, ovate, bluish- 

 white within ; peristome lead-colored with brown edge, broadly re- 

 flexed below, narrowly above; the columella vertical and straight 

 above, its margin widely reflexed. 



Length 55, diam. 25 mill. (ff. Ad.). 



Length 58, diam. 28 ; longest axis of aperture 27^ mill. 



Length 43, diam. 23; longest axis of aperture 21 mill. 



Length 47-50, diam. 23^ mill. (Sckmacker'). 



Formosa: Tamsui Mis. (Swinhoe); Bankimtsong, east of Takow 

 (Schmacker); Lalculi Mts. in southern Formosa (Fries). 



Bulimus (Amphidromus) formosensis H. ADAMS, P. Z. S., 1866, 

 p. 317, pi. 33, f. 5 PFR., Monogr. viii. p. 39. CochJostyla (Ohry- 

 sallis) formosensis PAETEL, Catal., p. 97. Amphidromus formosensis 

 KOBELT, Jahrb. D. M. Ges. vi, 1879, p. 213. MLLDFF., Jahrb. xi, 



1884, p. 162; also cf. Bericht Senckcnb. Ges. 1893, p. 99 



SCHMACKER & BOETTGER, Nachrichtsbl. D. M. Ges. xxiii, p. 195, 

 1891. 



An extremely variable species in size and markings. The light 

 streaks, as usual in Euhadra, most frequently arise at the suture. 

 Sometimes they may be entirely absent ; while uniform yellow speci- 

 mens have been recorded by Schmacker. The spiral dark and light 

 bands are equally variable. In several shells before me the whole 

 base is darker than the upper surface, but one or two creamy lines 

 define bands in the dark surface below the periphery. Fig. 26 is a 

 copy of the original illustration. 



The name is pre-occupied in Eulota ; and if on examination of the 

 anatomy a new one is needed, this species may be called E. elongata. 



A third species of this group is indicated by a poor dead specimen 

 collected at Kankow, Formosa, by Mr. Schmacker's Japanese col- 

 lector, and has been noticed by him as "Amphidromus spec." 

 (Nachrbl. 1891, 165). It resembles swinhoei in size and form, has 

 spiral lines and three dark bands. On account of the ill-preservation 

 of the specimen, no further description has been published. 



Genus CALYCIA H. Adams, 1865. 



Calycia H. AD., P. Z. S., 1865, p. 413. 



Shell ovate-conic, thin, perforate or closed, pellucid-whitish, spirally 

 sculptured, the aperture oblique, trapezoidal-ovate, peristome simple 



