MfiLVlLL AND STANDEN : SHELLS FROM LIFU. 283 



and large for the size of the shell, six at the penultimate, nine 

 on the last whorl, and less in proportion (e.g. four in the ante- 

 penultimate) on the other whorls. Mouth narrow. Sinus large 

 and hollowing across the outer lip; which is somewhat thickened 

 and obscurely toothed within. Very rare. (opoc/xo/xa, a 

 thatched roof). 



M. stibarochila sp. nov. (PI. IX., fig. 19). 



M. testa angusta, fusiform i, crassiuscula, anfractibus sex, 

 quorum duobus apicalibus, pallide brunnets, subvitreis, 

 acferis brunneo - ochraceis, ventricosulis, longitudinaliter 

 crassicostatis, costis albidis, transversim tenuiliratis, inter- 

 dum, sicut ad peripheriam anfractus ulttmi, liris crassioribus, 

 apertura oblonga, siuu a/uplo, labrum semi-effodiente, labro 

 extus percrasso, ockraceo, superne a/bo-vittato, columella 

 plana ochraceo-brunnea. 

 Long., 5, Lat., 2 mill. 



A small stoutly-built solid species, six whorled, of a lively 

 ochraceous brown, fading into white across the ribs. Some of 

 these are much thickened and crossed by liras, of which a few are 

 stronger than the others. The mouth is narrowly oblong, sinus 

 wide and half extending across the very thick outer lip which 

 is particoloured, white above, ochre below, the columellar mar- 

 gin clear ochraceous brown, simple. 



The only specimen was in the first consignment (1891) of 

 shells from Mr. Hadfield. (<j-T'i\iapo% thick x^Aos lip). 



M. thalycra sp. nov. (PI. IX., fig. 20). 



M. testa parva, nitida, fusiformi, ad apicem attcuuata, an- 

 fractibus septan, turritis, ventricosulis, albidis, ad suturas 

 infra et supra, spiralittr ochraceo-vittatis, et ad medium 

 anfractus ultimi si/nili modo ochraceo-cinctis, longitudinaliter 

 obtusicostatis, costis iucrassatis, panels, transversim spiraliter 

 sub lente tenuistriatis, apertura oblonga, labro exteriore recto, 

 iuterdum obscure denliculalo, columella ochraceo-tincta, 

 simplice. 

 Long., 6, Lat., 175 mill. 



