89 



Point and Cormorant Point, Anticosti, in the Anticosti group, division 

 3 = to the Upper Llandovery rock. 

 CoUoctor. — J. Richardson. 



Stricklandinia Melissa. (N. sp.) 



PI. 7, figs. 4, Aa, 



Description. — Moderately convex, truncate-ovate, greatest width about 

 the mid-length ; hinge-line straight, length about one-third less than the 

 greatest width of the shell, cardinal angles about 90^ ; sides straight and 

 nearly parallel for about two lines below the cardinal angles, then diverg- 

 ing with a gentle a curve to about the mid-length, thence converging with 

 a moderate curve to the middle of the front margin, which is obtusely 

 pointed. Area of the ventral valve slightly concave, inclining outwards 

 at an angle of about 45°. Area of dorsal valve incurved over that of the 

 ventral and almost in contact therewith. Beaks and umbones scarcely 

 perceptible. 



The surface is smooth with some obscure ribs towards the front margin. 

 Both valves are about equally convex. Length of the specimen, twenty 

 lines; greatest width, fourteen lines; length of the hinge-line, twelve 

 lines ; height of the ventral area, one line ; depth of both valves about 

 seven lines. 



The above description is founded altogether upon a single specimen, 

 which is, apparently, a good deal worn on the surface and somewhat 

 distorted by pressure. No doubt, when more perfect ones shall have been 

 discovered, some modification will become necessary. This species is 

 widely dilferent from all the Canadian form of the genus, except 

 S. Salterii, from which it differs in its greater proportional length. 



Locality and Formation. — South-west Point, Anticosti; Middle 

 Silurian. 



Collector. — J. Richardson. 



In the first volume of this work, p. 85, two other species, from the 

 Quebec group, are referred to this genus, (5. Arachic and S. Arethusa;) 

 I think, however, that when more is known about them they will be 

 otherwise classified. 



