18/1.] MR. HARPER PEASE ON POLYNESIAN LAND-SHELLS. 4/7 



Cfiondrella 



striata, Pse. Roratonga. 



Electrina, Gray. 



succinea, Sow. Eapa. 



Family Truncatellid.e. 

 Truncatella, Risso. 



concinna, Pse. Apaiang. 



Truncatella 



pacifica, Pse. Oualau. 

 valida, Pfr. Samoa. 



Taiieitia, A. Ad. 

 pallida, Pse. Tahiti, 

 porrecta, Gld. Tahiti, 

 scalariformis, Bve. (arcticostata, 



Mouss). Annaa. 

 vitiana, Gld. Samoa. 



AURICULID.E. 



Cassidula, Fer. 



crassiuscula, Mouss. Upolu. 



Pythia, Bolten. 



acuta, Hombr. Hogoleu. 

 pantherina, A. Ad. Nueniona. 



var. uveana, Mouss. Urea, 

 savaiiensis, Mouss. Savaii. 



Plecotrema, H. & A. Ad. 



clausa, H. & A. Ad. Hawaii, 

 striata, Phil. Oahu. 



Melampus, Mont. 



?ater, Miihl, Ponape. 

 castaneus, Miihl. Molokai. 

 fasciatus, Desk. Ponape. 

 frickii, Pfr. Oahu. 

 lucidus, Pse. Oahu. 

 luteus, Quoy. Ponape. 

 mucronatus, Gld. Raraka. (oryza, 

 H. S; A. Ad. Annaa.) 



Melampus 



philippii, Kust. Marquesas, 

 parvulus, Nutt. Oahu. 

 semiplicatus, Pse. Oahu. 

 semisulcatus, Mouss. Upolu. 

 striatus, Pse. Tahiti, 

 tseniola, Hombr. Mangareva. 

 violus, Less. Bolabola. 

 zonatus, Miihl. Marquesas. 



Laimodonta, H. & A. Ad. 



conica, Pse (anaaensis, Mouss.). An- 

 naa. 

 bronni, Phil, (sandwichensis, Soul.). 



Pedipes, Adans. 



sandwichensis, Pse. Hawaii. 



Blauneria, Shutt. 

 gracilis, Pse. Oahu. 



The following description was omitted above : — 



Chondrella striata, Pse. 



T. globoso-conica, tenuiuscula, imperforata, dextrorsa, spiraliter ele- 

 vato-striata, fulvida aut rufo - cornea ; anf. 3, convexi, ultimus 

 subventricosus ; spira obtusa, sutura impressa ; apertura rotun- 

 dato-ovuta; labrum simplex, tenue ; columella fere recta, cal/o 

 superne late dilatqto. 

 Alt. If, diam. \\ mill. 

 Hab. Insula Roratonga. 



The above may be distinguished from C. parva, Pse., in being 

 striate. It is also of smaller size. 



The first specimens of the above genus forwarded to London were 

 supposed by Mr. H. Adams to be the young of some species of 

 Realia ; they resemble more nearly the young of Assiminea. They 

 may be at once distinguished from either by the columellar callosity. 



