330 THE GEOLOGY OF THE LABRADOR COAST. 



Margarita varicosa (Mighl. et Adams). Frequent at 

 Hopedale and Caribou Island. 



Turritella erosa Couth. As numerous in proportion 

 to the succeeding species as at present on the coast. 



Turritella reticulata Mighl. et Adams. ( T. lactea 

 Moll.) Profusely abundant in both places. 



Turritellopsis acicula (Stimps.). One specimen. 

 Caribou Island. 



Aporrhais occidentalis Beck. Several. Caribou 

 Island. 



Lunatia gronlandica Moll. Frequent. 



Natica clausa Sowb. Frequent. 



Admete viridula Stimps. At Caribou Island. 



Bela robusta Pack. No specimens of this species 

 occurred at Caribou Island associated with the other 

 species ; it seems quite rare, and has not occurred in a 

 living state. Though very distinct from any of the other 

 species, it might be mistaken for a very much shortened 

 and thickened B. americana. It is much shorter and 

 broader than B. americana ; the whorls are five in num- 

 ber, angulated, giving the shell a well-marked turretted 

 form ; the fourth whorl is one half to two thirds as long 

 as the first, which is unusually large in proportion to the 

 rest of the shell. The aperture is broad, regularly ovate ; 

 canal long, narrow, oblique, and not gradually widening 

 towards the aperture. It has much fewer ribs than B. 

 americana, there being thirteen on the lower whorl, 

 where in B. americana are eighteen. Length .18; 

 breadth . 1 1 inch. 



Bela americana Packard. {Fusus turriculus Gould, 

 Invert. Mass. Bela scalaris Packard, Can. Nat. and 

 Geol. 1863, — not of Moll., Index Mollusc. Gronl.) l^a- 



