SMITH : MAEKJE SHELLS FEOM NEW ZEALAND. 25 



The specimens from New Zealand are identical in every respect 

 with, those from Patagonia. M. minuta, Dall, from Kerguelen Island, 

 is a closely allied form. 



12. MoDioLAECA BicoLOE, n.sp. Fig. III. (p. 22.) 



Testa parva, oblonga, antice alba, angustata, rotundata, postice 

 purpureo-rufescens, latior, rotunde siibquadrata, valde insequilateralis ; 

 umbones leviter prominentes, longe antemediani, ad apicem obtiisi ; 

 valvae tenues, mediocriter convexse, lineis incrementi tenuibus striatse ; 

 dens unicus in valva sinistra, in dextra dno ; ligamentum internum 

 parvum, obliqnum ; pagina interna antice alba, postice rufescens, 

 nitida ; cicatrices magnse, antica posteriore profundior. Long. 3'5, 

 alt. 2, diam. 1-5 mm. 



Hah. — Macqnarie Island (A. Hamilton). 



Distinguished fi'om M. pusilla and M. minuta, Dall, by its very 

 different form, the anterior end being conspicuously produced and 

 narrowed. 



