70 COLLECTIONS FBOM MELANESIA. 



"blanche, quehpiefois un pen jaundtre, avec des pits en arriere," 

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

 present in A. 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. 2sot finding any name which can be retained for this 

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

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

 • Conchylien-Cabinet,' and was given by Chemnitz to another speci* s. 

 If such were not the case I would have applied it to tins species, as 

 was done by (nay to specimens brought home by Dr. Dieffenhach 

 from New Zealand. 



83. Nerita costata. 



Chemnitz ; Reeve, Conch. Icon. figs. 6 a, b. 

 Hab. N.E. Australia, beach. 



84. Nerita lineata. 

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



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

 pine Islands (Reeve) ; Port ITolle, 12-20 fms., and Port Curtis, in 

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



85. Nerita squamulata. 

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



Hab. Port Curtis, Port Denison, Port Molle, Queensland, 12- 

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

 Islands (Reeve) ; Samoa Islands (Brcnchleg) ; Pelew Islands (King). 



86. Nerita signata. 

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



Hab. Friday 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. 



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



year L847). 

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



Hab. Porl Molle, Queensland, on a coral-reef (Coppinger). 



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

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

 exhibits a slight, obliquelj arcuate depression extending from the 

 centre to the opposite or inner side. 



