INVERTEBRATE FAUNA OF LABRADOR. 285 



Turritella erosa Codth. 



Abundant along the whole coast, at Chateau Bay, Long Island, in fifteen fathoms, sand. 



Turritella reticulata Mighl. 



Very abundant, occurring with the preceding in ten to fifty fathoms, but most abundant 

 in fifteen fathoms, mud, Salmon Bay. Chateau Bay, fifteen fathoms. Square Island, thirty 

 fathoms. Hopedale, ten fathoms. 



Turritella acicula Stimps. 



One individual of this species was dredged at a depth of fifty fathoms, on a hard bottom. 



Aporrhais occidentalis Beck. 



Very abundant on the whole coast from Salmon Bay to Hopedale, and is one of the most 

 characteristic shells of the coast, occurring in from six to fifty fathoms, mostly in muddy 

 quiet bays. 



Menestho albula Moll. 



Young specimens occurred very frequently in from two to fifteen fathoms, sand. 



Lamcllana perspieua Loven. 



Dredged at a depth of fifteen fathoms, on a sandy and muddy bottom. 



Natica heros Sat. 



Two young dead shells were found at high-water mark, in Salmon Bay, Straits of Belle Isle. 



Natica clausa Sowb. 



Found to occur quite frequently at a depth of fifteen fathoms. 



Natica (Lunatia) grcenlandica Beck. 



Taken at Chateau Bay, Long Island, in fifteen fathoms, on a sandy bottom. 



Bela americana. 



Defrancia scalaris Moll., Ind. Moll. Gronl. Fusus turricula Gould. 



The European B. turricula, as observed by Morch, is very different from the American 

 representative. On a comparison of our shell with several specimens of the turricula, we 

 find that the shoulder on each whorl which gives the shell its turreted appearance, is 

 situated more in the middle in B. scalaris. The turricula has twelve longitudinal ridges 

 on each whorl, being fewer and proportionately larger than in our species, which has 

 seventeen. Our species seems also to be a larger shell. It agrees well with Muller's D. 

 scalaris, to which he refers turricula Gould. 



In a long variety figured on PI. vii. fig. 11, the shell is slender, much elongated, regularly 

 fusiform, whorls flattened more than usual, being but slightly flattened, with the shoulder of 



