70 COLLECTIONS FROM MELANESIA. 



" blanche, quelquefois un peu jaundtre, avec des plis en arriere," 

 and the operculum is " rougeatre." None of these features are 

 present in N. melanotragus ; its spire is scarcely raised above the 

 last whorl, the labrum is margined with intense black, the colu- 

 mella is white and destitute of the " plis en arriere," and the oper- 

 culum is flesh-coloured, marked with two arcuate purplish-black 

 stripes. Not finding any name which can be retained for this 

 species, I have imposed upon it that of N. melanotragus, being 

 descriptive of the black labrum. The name N. nigra appears in the 

 ' Conchylien-Cabinet,' and was given by Chemnitz to another species. 

 If such were not the case I would have ap|ilied it to this species, as 

 was done by Gray to specimens brought home by Dr. Dieffenbach 

 from New Zealand. 



83. Nerita costata. 

 Chemnitz ; Reeve, Conch. Icon. %s. 6 a, h. 



Hah. N.E. Australia, beach. 



84. Nerita lineata. 

 Chemnitz ; Reeve, Conch. Icon. fig. 13. 



Hah. Straits of Malacca ( Chemnitz) ; Port Essington and Philip- 

 pine Islands {Reeve) ; Port MoUe, 12-20 fms., and Port Curtis, in 

 mangrove-swamps above high-water mark (Ooppinger). 



85. Nerita squamulata. 

 Le Gillou, Revue Zool. 1841, p. 344; Reeve, Conch. Icon. figs. 63 a-f. 



Hah. Port Curtis, Port Denison, Port MoUe, Queensland, 12- 

 20 fms., on a rocky bottom (Ooppinger) ; Singapore and Philippine 

 Islands {Reeve) ; Samoa Islands (Brenchley) ; Pelew Islands {King). 



86. Nerita signata. 

 Macleay ; Reeve, Conch. Icon. pi. x. figs, 44 a, b. 



Hah. Eriday Island, Torres Straits, in mangrove-swamps. 



One small specimen, obtained at the above locality, has the ridges 

 of a blackish colour articulated with creamy white, the interstices 

 being of a dirty white colour. 



87. Turbo concinnus. 



Philipid, Con.- Cab. p. 44, pi. xi. fig. 6 (published in Lief. 65 in the 



year 1847). 

 c=T. articulatus, Reeve, Conch. Icon. sp. 39 (1848). 



Hah. Port MoUe, Queensland, on a WTsl-vaei {Goppinger). 



The operculum of this species is solid, convex, more or less pale 

 greenish, coarsely granular, especially near the outer margin, and 

 exhibits a slight, obliquely arcuate depression extending from the 

 centre to the opposite or inner side. 



