326 THE GEOLOGY OF THE LABRADOR COAST. 



recent specimens dredged upon the coast. Most of the 

 species, after careful and repeated comparisons with the 

 recent examples, did not present any appreciable differ- 

 ences. In a few instances there were characters found 

 by which the fossils could be distinguished from the recent 

 shells of the same species, and those I have carefulljr 

 enumerated. 



Nullipara polymorpha Linn. This plant occurred 

 abundantly at Caribou Island. At Hopedale it was pro- 

 fusely abundant, growing in large free masses or encrust- 

 ing shells and stones. 



Euryechinus drobachiensis Verrill. ( Toxopneustes drd- 

 bachiensis A. Agassiz. Echinus granularis Say.) Frag- 

 ments of. the shells and numerous spines occurred abun- 

 dantly at Caribou Island and Hopedale. 



Lepralia Belli Dawson. Encrusting pebbles at Hope- 

 dale. One colony also on a shell. The young cells 

 were large, with crowded and sometimes perforate, gran- 

 ulated conical ovicells. The avicularia are situated either 

 in front of the opening or crowded to one side, and are 

 two in number. Both old and young correspond pre- 

 cisely with a specimen received from Dr. Dawson. 



Lepralia pertusa Thompson. This species occurred 

 on the shells of Buccinum cretaceum. It agrees well 

 with the large, oblong and coarsely punctate recent 

 specimens. It is well figured by Dawson in the Canadian 

 Naturalist and Geologist, Feb. 1859, p. 15, fig. 16. 



Lepralia ciliata Johnst. This form also occurred 

 frequently with the preceding. The cells are convex,, 

 the avicularia are present, projecting over the aperture. 

 The surface is punctate. 



Celleporaria surcularis Packard, Can. Nat. Dec. 1863,, 



