122 NEW YORK STATE MUSEUM 



rather less subrectangular outline. One might with reason regard the 

 Aroostook species a varietal expression of C. falklandicus. This 

 species has been recently identified in the Bokkeveld beds of Cape Colony 

 and figured by Reed ' and these figures also show a narrower shell than 

 that under discussion though attaining its full dimensions. 



Locality, Common at Edmunds Hill. 



Since describing the species as above I have received by courtesy of 

 Dr E. H. L. Schwarz specimens of C. falklandicus from Montague, 

 Cape Colony and on comparison of these with C. aroostookensis I 

 find the differences above suggested fully expressed. The species are very 

 closely related, both in size and matters of 'detail but the more elongate 

 rectangular outline of the latter stands as a distinguishing character. 



Chonetes paucistria Clarke 



Plate 30, figures 26, 27 



Chonetes paucistria Clarke. N. Y. State Mus. Bui. 107. 1907. p. 266 



This is a rare shell associated with the foregoing, distinguished there- 

 from by the fewer and coarser striae, barely more than one half the number 

 in C. aroostookensis, increase therein arising from implantation near 

 the margins. The outline also is not subrectangular but subelliptical, the 

 greatest width at the hinge and the margins converging quite rapidly in a 

 broad curve. These differences are expressed in our figures. 



Locality. Edmunds Hill. 



Anoplia nucleata Hall 



This spineless chonetid, characteristic of the Oriskany and Decewville 

 faunas, is not uncommon at Edmunds Hill. 



Stropheodonta cf. magniventer Hall 



See pt i, p. 184 



There are fragments of a convex Stropheodonta bearing very long 

 divaricator scars in the ventral valve, reaching almost to the margin. 

 These suggest the species cited. 



Locality. Edmunds Hill. 



Leptaena rhomboidalis Wilckens 



See pt i, p. 183 ; pt 2, p. 45 



Characteristic examples of this species of medium size only, occur at 

 Edmunds Hill. 



'An. South African Mus. 1903. v. 4, pt 3, p. 169, pi. 20, fig. 9, 10. 



