156 



north American coast the species has long been known to range from Long 

 Island Sound to Greenland. It is common in Norway and Scotland, and on 

 the coast of British Columbia passes imperceptibly into A. patina, 

 Eschscholtz. 



Specimens of the var. alveus (a narrow variety, formed, as Dall says, by 

 the " residence of the individual on a narrow frond of sea weed or Zostera ") 

 have been found by the writer at low-water in Shediac Bay. 



AcM^A RUBELLA (Fabricius). 



Patella rubella, 0. Fabricius (1780). 

 Pilidium rube'lum, Packard (18(56). 

 Teotura rubella, G. O. Sars (1878). 

 Acmcea rubella, Dall (1878). 



Fishing banks off Halifax, very rare (Willis). Atlantic coast of Labrador, 

 off Square Island, in 35 fathoms on a hard bottom, also near Strawberry 

 Harbour, on the south side of Thomas Bay, in 20 fathoms (Packard); and 

 Temple Bay, one living specimen, on a rocky bottom, Stearns expedition 

 (Miss Bush). Greenland, (Fabricius, and Moller). 



RhIPID0(3L0SSA. 



Family Fissurellidos. 

 Puncturella Noachina (L). 



Patella Noachina, L. (1771) ; and O. Fabricius. 

 Puiicturella Noachina, Lowe (1827). 

 Diadora Noachina, Stimpson (1851). 

 Geimria Noachina, Gould (1841 and 1870). 



Grand Manan. " During a low spring tide in August " (1852) "I obtained 

 a large number of this species from the under surface of large stones, near 

 low-water mark. It has been hitherto found, both here and in Europe, 

 only in deep water " (Stimpson). Willis records it as having been obtained 

 from the fishing banks off Nova Scotia, and as having been dredged in 

 Halifax Harbour in 10 fathoms. It has been dredged at many localities in 

 the Gulf and mouth of the River St. Lawrence, at moderate depths, by Sir 

 J. W. Dawson, Bell, and the writer; also at the Strait of Belle Isle, in 

 10 to 50 fathoms, by Packard. On the Atlantic coast of Labrador it 

 has been taken off Square Island, in 30 fathoms, by Packard ; and Miss 

 Bush records it as having been collected at Henley Harbour, and Dead 

 Island, near Square Isknd. ov ^.ho Stearns expedition. If it be the same as 

 the P. cucullata, Gould, as a^.-m-d by Pilsbry, it is found also on the coast 

 of British Columbia. 



Sir J. W. Dawson says that P. Noachina has been found fossil at Riviere 

 du Loup, Quebec ; and on the Clyde, Scotland. 



