GIBBULA. 225 



G. coRALLiNA E. A. Smith. 



Shell coral-red, ssnicall, orbicular, rather dejjressed, deeply but 

 narrowly umbilicated ; whorls 4, convex, encircled by close sub- 

 granulose lirje, 4 to 5 on the upper whorls, about 20 on the last 

 whorl, and with distant, oblique, longitudinal striae ; umbilicus 

 deep, surrounded by a large ridge sulcated by longitudinal striation.s ; 

 aperture circular, slightly pearly within. 



Alt. 2i, diam. 3 mill. ' (Smith.) 



Japan. 



This is a very pretty little shell with convex whorls, which are 

 spirally striated, the interstitial lirations being somewhat gran ulo us. 

 This appearance is produced by their being cut across by rather 

 distant striations. (Smith.) 



T. (Gibbida) corallinus E. A. S., Ann. Mag. N. H. 1875, p. 111. 



G. FULGENS Gould. PL 40, fig. 38. 



Shell imperforate or a trifle rimate, globose-conical, rather thick 

 and solid, vividly iridescent under a thin brownish cuticle, the 

 reflections chiefly gi'een and golden ; spire more or less elevated ; 

 apex minute, acute ; sutures impressed ; whorls about 5, quite con- 

 vex, the last globose, rounded, encircled by about 16 delicate lirse, 

 above separated by wide interstices, which are lightly obliquely 

 striate, and often spirally striate ; on the base the lir^e are closer 

 and more regularly spaced, nearly as wide as the interstices. The 

 lirse are either uniform brown or articulated brown and yellowish ; 

 there are sometimes short brown flammules below the sutures. The 

 lir?e or keels are very widely separated about the middle of the 

 whorl. Aperture subcircular, almost smooth (a trifle sulcate) with- 

 in, and vividly iridescent ; columella arcuate, a trifle dilated at base, 

 and either concealing the perforation above or leaving a narrow 

 chink. Alt. 7, diam. 6 1 ; alt. 6*, diam. 6 mill. 



Jaj)an. 

 G. fidfjens Gld., Proc. Bost. Soc. N. H. viii, p. 21 (1861) ;— 

 Otia Conch., p. 160. — E. A. Smith, Ann. Mag. Nat. Hist. 1875, p. 

 110. — Tr. iridescens Schrenck Reisen im Amurlande, Moll., p. 

 356, t. 15, f. 19-24 ; Bull, de I'Acad. Imp. des Sci. de St. Petersb. v, 

 p. 512 (1863) ; iv, p. 255. 



A brilliantly iridescent little shell, quite heavy and solid, hav- 

 ing a little the aspect of a Solariella, but imperforate. I have seen 

 no other Gibbula whicli shows the iridescence through the cuticle as 

 15 



