274 AMERICAN JOURNAL 



Engina ovata, Pease. Proc. Zool. Soc, London, 1865. Plate 

 23, fig. 6. 



Description. — T. abbreviato-ovata, utrlnque acuta, medio sub- 

 angulata, longitudinaliter costata, costis 10-12, rotundatis, trans- 

 versim irregulariter nodoso-lirata et striata ; apertura superne 

 regulariter arcuata, infra contracta ; basi vix recurva ; nigra 

 liratum interstitiis albis vel pallide luteo-fuscis, denticulis aper- 

 turse albis. 



Dimensions. — Long. '5, diam. -32 poll. 



Locality. — Insl. Rowland. 



Shell abbreviately ovata, short, stout, acute at both ends and 

 somewhat angulate at the middle, longitudinally ribbed, ribs 10- 

 12, rounded, encircled transversely with nodose ribs of irregu- 

 lar size and fine stride; aperture regularly arched above and con- 

 tracted below ; canal short and slightly recurved ; black inter- 

 stices between transverse ribs, whitislj, or pale yellowish brown, 

 denticulations of the aperture white. 



A short, stout, obese shell, differing in shape from any de- 

 scribed species. 



Engina tuberculosa, Pease. Proc. Zool. Soc, London, 1862. 



Description. — T. fusiformi, utrinque attenuata, transversim 

 sulcata, longitudinaliter tuberculato-costata, transversim minu- 

 tissime striata ; columella postice corrugata ; denticulis parvis ; 

 apertura albida, longitudinis testa dimidium baud gequans; 

 nigra, anfr. ultimo albo-fasciata. 



Dimensions. — Long. 9, diam. 4 mill. 



Locality. — Insl. Baker. 



Shell fusiform, attenuated at both ends, spire somewhat 

 acuminate, acute, longitudinally tuberculately ribbed, trans- 

 versely grooved and very minutely striate, longitudinal ribs 12— 

 15, rounded and not prominent ; aperture less than one half the 

 length of the shell ; columella corrugate and plicate posteriorly ; 

 denticulations small ; color black, last whorl encircled with a 

 white band, aperture and apex whitish, the lower part of the last 

 whorl and spire are occasionally spotted with white. 



Engina nodicostata. Pease. Plate 23, fig. 8. 



Description. — T. fusiformi-ovate, utrinque attenuata, longi- 

 tudinaliter, obsolete nodoso-costata, costis 10-12, transversim 

 nodoso-costata, costis tribus, striis minutissirais granuloso-de- 

 cussata ; collumella loevis ; labro intus tridentato ; apertura 



