857 



direction. Mr. Hanley's specimen is prettily marked by brown 

 spots behind the nodules. Locality unknown. 



31. Gerithium eburneum (pi. clxxx. f. 80, 81, 82, 83), 

 Brug. E. M. no. 41. C. algiecola, C. B. Adams, incluso. Non 

 C. eburneum, Kiener, pi. 10. f. 2. 



Cerith. testa oblonga, turrita, colore alba seu varia, plerumque 

 maculis rufo-fuscis in lineis transversis dispositis ornata ; anfrac- 

 tibus subangulatis, costis moniliformibus subaequalibus cinctis ; 

 apertura subrotundata ; canali mediocri. 



Shaped like several of the preceding ; the typical variety is white, 

 but another presents a pretty system of beaded ribs, with brown 

 dots between. The whorls are scarcely angular, and the nodulous 

 ribs nearly equal. The varieties are numerous. Fig. 81 represents 

 C. algiecola of Mr. C. B. Adams. 



32. Cerithium planispiratum (pi. clxxx. f. 91), Nobis. 



Cerith. testa acuta, alba, C. eburneo simili, sed anfractibus ad 

 suturam complanatis. 



This is a unique shell in the collection of Mr. Hanley ; it is 

 like C. eburneum, but more acute, and has a flat space above the 

 angle. Locality unknown. 



33. Cerithium Nov.e-Hibernive (pi. clxxx. f. 84, 85), A. 

 Adams. C. eburneus, Say, Kiener, Icon. pi. 10. f. 2. 



Cerith. testa quam C. eburneus breviuscula ; anfractibus angu- 

 latis, in medio plicato-noduliferis, ultimo planiusculo. 



A shorter shell than C. eburneus, with the whorls angulated by 

 a larger row of pliciform knobs on the angle. A lateral varix gives 

 a flatness to the last whorl. Sab. Florida. 



34. Cerithium tenellum (pi. clxxx. f. 88, 89. 90), Nobis. 



Cerith. testa, pyramidali, kevi, nodulis cincta ; anfractibus angu- 

 latis, ad angulum et ad suturam mouiliferis ; apertura ovali ; canali 

 aperto. 



Although beaded, this is a smooth shell, with a row of squarisli 

 beads on each whorl at the suture, another at the angle, and one 

 below, smaller. The varieties are white, pink, and brown-speckled. 

 Iiab. Philippines, //. Cuming. 



35. Cerithium torulosum (pi. clxxix. f. 64 ; pi. clxxx. 

 f. 92), Linn. (Murex), Syst. Nat. Murex annulatus, Martyn. M. 

 annularis, Gmel. 



Cerith. testa albida, apice livida, costis noduliferis ornata ; an- 



