Il6 NEW YORK STATE MUSEUM 



Length of the largest specimen seen, eighteen lines. The proportions vary greatly, 

 as may be seen by the following measurements of three specimens : 



Length Hight at umbones Greatest hight 

 No. I 14 lines 5 lines 10 lines 



2 15 lines 8 lines 11 lines 



3 14 lines 6 lines 12 lines 



The form is also variable ; the posterior margin being either broadly and nearly uni- 

 formly rounded or more or less distinctly angulated, usually a little below the middle. 



Locality and Formation. — Between Cape Gaspe and Cape Rosier ; Gaspe limestone, 

 Lower Helderberg. 



Billings did not figure this species but we have here given illustrations 

 from his original material. The specimens are labelled as from Indian Cove 

 and from " Grand to Little Portage." 



Orbiculoidea bella Billings (sp.) 



Plate 47, figures 17, 18 



Crani a b ella Billings. Palaeozoic Fossils, v. 2, pt i. 1874. p. 15, fig. 5 



This shell, of which we figure the originals, is an Orbiculoidea. 

 Locality. Cape Bon Ami. 



, Leptaena rhomboidalis Wilckens 



Lingula artemis Billings 



See Billings. Palaeozoic Fossils, v. 2, pt i. 1874. p. 14, fig. 4 



Lingula lucretia Billings 

 See Billings. Palaeozoic Fossils, v. 2, pt i. 1874. p. 14, fig. 3 



Duncanella cf. rudis Girty 



Duncanella rudis Girty. N. Y. State Geol. 14th Rep't. 1895. p. 299, pi. 2, 



fig- 7, 8 

 Cape Bon Ami beds at the Quay, Cape Rosier Cove, and in the New 

 Scotland beds of the Helderbergian, N. Y. 



Hindia fibrosa Roemer 



See notice of this species under Fauna, of the Dalhousie formaiion. 



