96 



451. Fossarus Fisch er i Mörcli. 



Differt a praecedeute T. conica imperforata, spiraliter 

 striata, spira elata acuta, apice castaneo; anfr. superne 

 ad suturam plauis angulatis, anfr. ult. carinis validissi- 

 mis, acutis quatuor, quarum antica minore. 



Alt. 3 mm. ; diam . 2 '/^ mm. 

 Hab. St. Thomas (Krebs.) 



Littorina lamellosa Montr. Journ. Conch. IStU. p. 

 273. t. 11. f. 3 persim. 



Isapis H. & A. Adams. 



an Odostomia? 

 * 452. Isapis anomala C. B. Adams. 



„Sh. ovate: white with a tinge of brown: with on 

 the peuult whorl 4, and on tlie last whorl 8, stout ob- 

 tuse very prominent Spiral ridges, which are decussated 

 iinbricately by very prominen regulär incremental lami- 

 nae: apex acute: spire with the outlines rather convex: 

 whorls 4, quite convex, with a rather deep suture: last 

 whorl large and ventricose: aperture ovate, somewhat 

 effuse and subacute anteriorly: labrum pectmate, rather 

 sharp, thickened within: columella Avith a small t:ans- 

 verse plait opposite the umbilicus, expanded and liat- 

 tened below." Ad. 



Div. 67"; long, spirae 0.„g poll. long. tot. 0,2; lat. 

 0,,3 poll. 



Narica? anomala Adams Contr. Nr. 7. 1850. p. 109. 



Isapis anomala C. B, Ad. H. & A. Ad. Gen. 1. 

 p. 320. t. 33. f. 8. 



Isapis anomala Chenu Man. p. 302. f. 2135. 



Fossarus anomalus Ad. Fischer. J. Conch. 1864. 

 XII. p. 256. 



Hab. Jamaica (C. B. Ad.) 



Nota. The specimens collected by Mr. Henry Krebs are now 

 in the collection of Dr. C. M. Poiilsen. The coUection of Mr. Dietz 

 formerly of St. Thomas forms now a part of Mr. Ä. H. Kiise's Col- 

 lection. 



