THE MOLLUSCA OP TOEEES STRAITS. 161 



65. CoLUMBELLA (Pygm^a) Ttleei, Grvay. 

 Station 5, Albany Pass. 



QQ. COLUMBELLA (PTGMiEA) TEESICOLOS, ^OW. 



Station 12, Mabuiag, 4 fathoms (Oct. 1888). 



&7. CoLTJMBELLA (Atilia) galaxias, B,ve. 

 Station 5, Bojdong Cays. 



[ 68. CoLTjMBELLA (Miteella) semiconvexa, Tiam. 

 Station 5, Boydong Cays. 



69. COLXIMBELLA (CoNOIDEa) PLATA, Bvug. 



Station 13, Murray Island ; Station 8, Albany Pass. 



MuEICID^. 



70. MuEEX BREVispiNA, Lam. 

 Station 13, Murray Island. 



71. MuEEX (Chicoeetjs) adustus, Lam. 

 Station 13, Mer. 



Yar. puscus, Dkr. 



Excepting in the reddish-brown colour of the varices, we 

 cannot trace any specific distinction between this and the typical 

 M. adustus^ Lam. 



Station 8, Albany Pass. 



72. MuREx (Chicoeetjs) axicoetstis, Lam. 

 Station 13, Mer. 



73. MuREX (Chicoeeits) capccinits, Lam. 



The vague locality " Philippines," that has been given in our 

 text-books for this species, has been considered unauthentic, as 

 the west coast of South America (Chili) seems to be its head- 

 quarters. Its occurrence therefore in the Torres Straits is very 

 interesting. 



74. MuREx (Pteeokotus) saibaieksis, sp. n. (PI. 10. fig. 1.) 

 M. testa trigona, tenui, calcarea, albido-cinerea ; anfractibus 



5-6, apicali mamillari, vitreo, cseteris trivaricosis, varicibus 

 foliatis, uni-angulatis, expansis, spiraliter liratulis, apud medium 

 anfractus ultimi simul ac penultimi, inter varices noduliferis ; 

 apertura ovata, peristomate foliaceo, delicate squamulato, canali 

 producta, lata. Long. 18, lat. 13 mm. 



Between Saibai I. and jS'ew Gruinea, 10-17 fathoms (Station 3). 



