76 AMERICAN JOURNAL 



except in being more abbreviate in shape, and margination at 

 the suture less distinct, and last whorl more convex. 



SCALARIA UMBILICATA, Pease. 



T. elongato-turrita, umbilicata, alba ; anfractibus decern, rot- 

 undatis, contiguis, politis, sub-lente remote spiraliter impresso- 

 striatis ; varicibus 11, angustis, parvis, vix obliquis, in umbilicum 

 introitis ; apertura ovata, postice subangulata. 



Alt 10. Diam SJ mill. 



Hah. — Insl. Oahu. 



Shell elongately turreted, umbilicate, white ; whorls ten, 

 rounded, polished, contiguous, encircled by fine remote impressed 

 striae ; varices eleven, narrow, small, slightly oblique, entering 

 into the umbilicus ; aperture ovate, somewhat angulate pos- 

 teriorly. 



Engina lineata, Rve. var. maculata, Pease. Plate viii, fig. 12. 



T. elongato-ovata, crassa, solida, longitudinaliter nodoso- 

 costata, transversim sulcata et tenuiter punctato-striata ; anfr. 

 infra suturam subangulatis ; apertura angusta, recta ; alba, anfr. 

 ultimus, nigro trifasciatus, anfr. superioribus unifasciatis ; basi 

 lineis nigris notata ; anfr. maculis nigris conspicuis cingulatis. 



Alt. 12. Diam. 6 mill. 



Hah. — Insl. Apaian. 



Shell elongately ovate, thick, solid, longitudinally nodosely 

 ribbed, transversely grooved and impressly striate, strise fine and 

 punctured ; spire acute ; whorls slightly angulated beneath the 

 suture; aperture narrow, straight; white, last whorl encircled 

 by three, upper whorls by one black line, base marked by oblique 

 black lines ; whorls encircled by a single row of conspicuous 

 round black spots. 



The above is without a doubt a variety of Imeata Rve., 

 although it would be difiicult to distinguish the original species 

 from several others, by the short description given by Mr. Reeve, 



Cerithium tuberculiferum, Pease. 



1865. C. Adansonii, (Rve. non Brug.,) Con. Icon. Species 11, 



T. crassa, solida, elongato-pyramidata, spiraliter lirata, in- 

 terstitiis impresso-striatis, tuberculis acutis extantibus armata ; 

 anfr. 9, medio subangulatis, ultimus subventricosus ; apertura 

 parviuscula, callo postico crasso, canali brevi, labro crenulato, 

 alba, rufescento-fusca punctata. 



