BY THE REV. J. E. TENISON-WOODS. 15 



polished, sulcate ; labrum marked with a varix, concave, colu- 

 mella hidden, canal short, recurved. Suture well impressed and 

 ■with a slender thread round it. 



I am in doubt about the genus of this and the following shell. 



? JEsorUS CREBRECOSTATUS. PI. 3, fig. 5. 



Testa parva, elongato-fusiformi, turrita, solidiuscula, nitente ; 

 anfr. 6^, rotundatis , declivibus, crebre costatis'^filis spiralibus minuiis 

 cinctis ; costis acutis, curvatis, ultim. anfr. 22 • Jilis supra coslas 

 trans euntibus ; sutura bene impress a ; nucleo l^ anfr. polito ; 

 apertura lata, labro varice incrassato, columella polita, postice 

 tuberculato ; fauce eneausta, canali brevi, parum recurvo. Long. 9 

 lat. 4. 



Shell small, elongately fusiform, tiirretted, somewhat solid, 

 shining, whorls 6^, rounded, sloping, closely ribbed, and spirally 

 girdled with very fine threads. The ribs are acute, curved, 22 

 on the last whorl ; threads passing over the ribs, suture well 

 impressed; nucleus of 1£ whorls, polished. Aperture broad, a 

 varix on the outer lip, the throat enamelled, and the columella 

 with a posterior tubercle. The canal is very short and slightly 

 recurved. 



Tritox Woodsii, E. Tate, M.S. PL 3, fig. 1—2. 

 Testa late fusiformi, parva, tenui ; anfr. 6, convexis, medio 

 angulatis undujue crebre, cincinne, tenuiter cancellatis, vel quasi 

 textile decussatis ; varicibus conspicuis angustis, elevatis ; apertura 

 late ovata, fauce eneausta, labro varicoso, ad marginem acuto, intus 

 deniato ; labro definito, parum reflexo ; canali prcelongo, aperto, 

 obliquo, recurvo, nucleo Icevi, apice verticaliter disjuncto. Long. 12 

 lat. 9. 



Shell broadly fusiform, small, thin, whorls 6, convex angular 

 in the middle, covered all over with a close, fine cancellation, 

 which is very like a woven fabric. The varices are conspicuous, 

 narrow, and much raised ; cancellate like the body of the shell # 

 The aperture is widely ovate with the throat enamelled, and the 



