EUCHEI.rs. 441 



spire, ventrico.se, with delicate, highly elevated spiral rib-stria?, of 

 which there are about 5 on the upper and 10 on the last whorl. 

 The surface of the ribs is slightly tuberculous, and the last one over- 

 hangs the succeeding whorl so as to form a broad deep channel at 

 the suture. The interspaces have about the same width as the ribs, 

 and are beautifully barred with close-set lamina; ; base convex, with 

 a small deep scalariform umbilicus, sculptured like the spire. 

 Aperture obliquely semicircular; lip crenulated by the ribs, con- 

 spicuously sulcate within ; columella sharp, oblique, armed with a 

 fully-developed sharp tooth at base, succeeded by a deep basal 

 notch. (Old.) Alt, 9, diam. 7 mill. 



Vitils.! New Caledonia! Japan f 



Tr. (Monodonta) instrictus GOULD, Proc. Bost. Soc. N. H. iii, p. 

 ir,7. 1849; U. S. Expl. Exped. Moll., p. 190, f. *225.Euchelu8 

 inxti'i'rtiis OLD., Otia Conch., p. 245. Turcica instricta GLD., A. AD., 

 Ann. and Mag. N. H. xiii, (3d. ser.) p. 143, 1864. Monodonta 

 bourcierei CROSSK, Journ. de Conchy!., 1863, p. 178, t. 4, f. 6. Tr. 

 bourcierei Crosse, FISCHER, Coq. Yiv., p. 249, t. 84, f. 3. 



This little shell is conical, like E. rubra, whitish with a series of 

 brown spots below the suture, often continued as stripes to the 

 periphery. Tr. bourcierei Crosse (pi. 37, figs. 18, 19) is a synonym. 

 Specimens of it from New Caledonia are before me. Of the typical 

 form I have shells from the Viti Islands. 



E. PERSICUS Yon Martens. PI. 39, figs. 31, 32. 



Shell globose-conoidal, perforate, granulate-cingulate, cinguli un- 

 equal, with a few blackish spots, 8 conspicuous cinguli on penult., 

 about 20 on last whorl ; interstices narrow, pitted ; suture pro- 

 found ; aperture ovate-circular, throat sulcate, corresponding to 

 the external sculpture, margin bright silvery, denticulated by the 

 terminating cingnli ; columella arcuate, white, terminating in a more 

 or less obsolete denticle; umbilical fossa between the columellar 

 margin and the lowest cingulus shining, white. 



Alt. 17, diam. maj. 16, min. 14 mill. ; aperture, long. IH, lat. 8? 

 mill. (Mart.) 



Nearest allied to E. atratus Gmel., pullatus Ant., and baecatus 

 Mke. Distinguished from the first by the reduced or absent colu- 

 mellar tooth and lighter color ; from the last two by the numerous 

 spirals and narrow pitted interstices. The count of spirals is not 

 very constant, because there are frequently, especially on the last 



