69 

 Spirorbis lucidus (Montagu). 



Serpula porrecta, O. Fabricius (non Miiller). 

 Serpula siiiistrorsa, Montagxi (1808). 

 Serpula iucida, Montagu (1808). 

 Spirorbis lucidus, Fleming, et auct. (Verrill). 



Grand Manan, "found chiefly on Sertularije and other corallines " (Stin)p- 

 son) ; Bay of Funtly, 10 to 80 fiithoras, on hydroids (Verrill) ; Le Have Bank, 

 N.S., in 45 fathoms, U. S. Fish Commission, 1872, (Smith and Harger) ; 

 Gulf of St. Lawrence, at Gasp^ Bay and many other localities, collected by 

 Sir J. W. Dawson, Dr. R. Bell and the writer ; Henley Harbour, Strait of 

 Belle Isle, at a depth of 4 fathoms, on alg;e (Packard). 



Fossil in the Pleistocene deposits at Riviere du Loup, on the inside of 

 shells (Sir J. W. Dawson). 



This species forms small, translucent, glossy, reversed spiral tubes, coiled 

 in an elevated spire, the last whorls usually turned up, or even erect and 

 free (Verrill).* 



Spirorfis vitreus (Fabricius). 



Serpida vitrea, O. Fabricius (1780). 

 Sjyirorbis vitreus, Dawson (18(50) ; eb auct. 



Grand Manan, on a Fecten in 20 fathoms (Stimpson) ; Gaspe (Bell), Little 

 Metis (Sir J. W. Dawson), Strait of Belle Isle, in 40 to 50 fathoms, and 

 along the whole coast of Labrador (Packard) ; Greenland (Fabricius). 



As a Pleistocene fossil this species has been found at Riviere du Loup, 

 Murray Bay, Beauport and Montreal (Sir J. W. Dawson). 



" aS'. vitreus is like S. sinistrorsus " (now called S. vitreus), " a reversed 

 species, but is thick, semi-transparent, and has the whorls closely crowded, 

 and in adult shells turned up and somewhat narrowed and thickened at the 

 mouth. A group of these shells looks like a number of small drops of glass 

 that had fallen on a stone and cooled there " (Sir J. W. Dawson), t 



Spirorbis cancellatus (Fabricius). 



Serpula cancellata, O. Fabricius (1780). 

 Spirorbis cancellata, Dawson (1800). 



Abundant at depths of less than 100 fathoms at many localities in the 

 Gulf and mouth of the River St. Lawrence, where it has been dredged by 

 Sir J. W. Daw.son, Dr. R. Bell and the writer. Strait of Belle Isle, on a 

 stony bottom, —and common on the whole coast of Labrador (Packard) ; 

 Greenland, (Fabricius). 



* U. S. Fish Commission, Report for 1871 and 1872 (1873), page 622. 

 f Canadian Naturalist and Geologist (1860), vol. v., p. 26. 



