420 



TROCIIINyE. 



Sj^ecies of Diloma. 



atrovirens, Phil. 

 carbonaria, Phil. 

 cingulata, Quoy and Gaivi. 

 coraciua, Trosch. 

 melauoloma, Mke. 

 morio, Trosch. 

 nigerrima, Chem. 



odontis, Wood 

 piperina, Phil. 

 radula, Parreyss. 

 Scorpio, Gray. 

 sulcata, Wood. 

 undulosa, A. Adams. 



Genus THALOTIA, Gray. 



Shell solid, ovate, turretecl, axis imperforate, wliorls 

 flat, granulated or transversely ribbed ; aperture oval, 

 longer than wide ; columella anteriorly tubercular, sub- 

 truncate ; outer lip thickened and crenulated internally. 



E.T. T. conica, Gray, pi. 48, fig. 1. Operculum, 

 T. pulcherrima, fig. I, a, 1, b. 



The shells of Thalotia are elevately conoidal, with 

 sub-quadrangular apertures, the columella is rather 

 straight, truncated and tubercular at the fore part, and 

 the whorls are transversely grooved or furnished with 

 granulated ribs. The species appear to be confined, 

 in geographical range, to Australia and New Zealand. 



Species of Thalotia. 



balteata, Phil. 

 conica, Gray. 

 creuellifera, A. Adams. 

 eloiigata. Wood. 

 Lehmanni, Mke. 

 obscura, Wood. 



picta, Wood. 

 pulcherrima. Wood. 

 Schayeri, Trosch. 

 strigata, A. Adams. 

 suturalis, A. Adams. 

 triciugulata, A. Adams. 



