142 PROCEEDINGS OF THE ACADEMY OF [1887. 



LAIMODONTA, Nuttall. 



L. Layardi, H. and A. Adams. 



Ophicardelus Layardi {Laimodonta), H. Jind A. Adams, Proc. 

 Zool. Soc, 1854, p. 35. 



Laimodonta Layardi, H. and A. Adams, Gen. Moll., ii, p. 246. 



Melampus Layardi, Pfeiffer, Syn. Auric, no. 48 ; Mon. Auric, p. 

 51. Gassies, Faun. jSTouv. Caled., p. 61, pi. 7, fig. 7. Tennent's Cey- 

 lon, i, p. 239. Cox, "Exchange List," p. 33. H. Nevill, Enura. Hel. 

 etc., Ceylon, 1871, p. 4. 



Laimodonta conica, Pease, Proc. Zool. Soc, 1862, p. 242 ; Amer. 

 Jour. Conch., 1868, p. 101, pi. 12, fig. 15; Jour, de Conch., 1871, 

 pp. 93, 94. Proc, Zool. Soc, 1871. pp. 470, 477. Schmeltz, Cat. Mus. 

 Godefi:, V, p. 81. Garrett, Jour. Phil. Acad. Nat. Sci., 1881, p. 403. 



Laemodonta conica, Martens and Langk., Don. Bism., p. 57, pi. 3, 

 fig. 13. 



Laimodonta Anaaends, Mousson, Jour, de Conch., 1869, p. 63. 

 pi. 5, fig. 1. 



Pleeotrema Anaaensis, Paetel, Cat. Couch., p. 114. 



Melampus conicus, Pfeiffer, Mon. Pneum. (Auric), iv, p. 319. 



"f Melamjnis Anaaensis, Pfeiffer, 1. c, p. 320. 



A few beach-worn specimens found at Upolu. Ranges from the 

 Paumotu Islands to the East Indies. 



This species is acuminately-ovate, rather solid, spirally striated by 

 incised lines, spire rather long, acute ; color chestnut-brown, with 

 one or two transverse whitish bands. Parietal region with two 

 plaits, one on the columella and one or two in the palate. 



Length 6 to 82 mill. 



CASSIDULA, Ferussac. 

 C. crassiuscula, Mousson. 



Cassidula crassiuscula, Mousson, Jour, de Conch., 1869, p. 343, 

 pi. 15, fig. 1. Paetel, Cat. Conch., p. 114. Pease, Proc Zool. Soc, 

 1871, p. 477. Schmeltz, Cat. Mus. GodeflT., v, p. 88. Pfeiffer, Mon. 

 Pneum. (Auric), iv, p. 352. 



Auricula (Cassidula) crassiuscula, Mousson, Jour, de Conch., 

 1871, p. 191. 



Cassidula nucleus, Gassies, (Marty n ?), Faun. Nouv. Caled., p. 71, 

 pi. 3, fig. 9. 



Common on the mud in mangrove swamps, and inhabits the 

 Tonga, Viti and the islands in Melanesia. 



