117 



Spiral Striae; änteriorly witli 4 additional smaller less 

 ßtroügly nodulous spiral ridges and interniediary Striae: 

 apex very acute: spire Avith the outlines sliglitlv curvili- 

 near: wliorls 10 or 11, a little convex, Avith a well im- 

 pressed suture: aperture subovate, ratber acuminate at 

 both extremities: labrum rather sharp, very much thick- 

 ened both externally and internally a little behind the 

 edge, deeply striated within: labiuni with a small callus 

 on the Upper part: canal very short, rather \Adde, much 

 deflected to the left." Ad. 



Long, spirae 0,^2 poH-; long. tot. O^^, poll.; lat. 

 0,2 poll. 



Cerithium versicolor C. B. Ad. Contr. p. 119. (1850.)*) 



Cerithium ferrugineum Say Sow. Thes. Nr. 71. f. 177. 

 Hab. Jamaica (Ad.) St. Croix (Oersted.) 



r>ar. u major, aspera. 



C. eriense Val. Sow. Thes. p. 863. Nr. 58. f. 119. 



C. stercus muscarum Say. Kien. Spec. p. 47. t. 49. 

 f. 2? 

 Hab. Honduras (Dyson) Cura^ao (Swift, Riise.) 



var. ß. grisea. 



C. variabile C. B. Ad. Sow. Reeve Icon. 1865. f. 

 91. „T. parva, breviuscula, grisea, nigro-tuberculata, 

 anfr. subventricosis, tuberculis nigris ovalibus in seriebus 

 tribus (ultimo 5) cinctis, interstitiis minute tuberculatis 

 anfractu ultimo subovali, apertura breviuscula, canali 

 brevi, aperto." Sow. verisim. var, pr£ecedentis. 

 . c^ 278. Cerithium variabile C. B. Ad. 



„T. parva, solid a, nigra, irregulariter albo-macu- 

 lata; sutura profunda; anfr. 9 convexis, striatis, striis 

 creberrimis decurrentibus; spiras anfr. plicis 4 angustis 

 decurrentibus, et plicis longitudinalibus, intersectionibus 

 nodiferis instructis; labro intus incrassato et crenato; 

 labio supra uniplicato; canaU brevi." 



*=) non Phil. Mke. Zeitschr. 1848. p. 20. 



