SCU3DER.] CANADIAN FOSSIL INSECTS. 51 



Ontario. It was really found by Dr. G. J. Hiiide on the shores of Lake 

 Erie, near Cleveland, Ohio, in clay beds very similar to those of tScar- 

 boro'. 



Pterostichus destitutus. 



Pterosfichus ckstUiitiis Scudd., Tert. Jus. N.A., 526, PL i, fig. 44 (1890). 



This species is represented by a single elytron of a mahogany colour, 

 which seems to be nearly related to P. sayi Brulle, and is of the same shaj^e, 

 though a considerably smaller species. The character of the strise in depth 

 and punctuation is qijite as in P. sayi, but the interspaces are flatter, and 

 the delicate transverse reticulate striation, finely traced in P. sayi, is here 

 inconspicuous and dull and more iri^egular. The present species has a 

 similar sutural stria, but apparently no puncta in the thiixl or any other 

 interspace, though it is possible that one exists in the place occupied by 

 the posterior one in P. sayi. One peculiarity of the present species is the 

 early union of the fifth and sixth stria?, well in advance of the interruption 

 of the marginal curve. 



Length of elytron, 6"'™ ; breadth, 2-5'""\ 



Pterostichus sayi occurs in Canada and the Mississippi valley from 

 Illinois to Texas. 



Interglacial clay beds of Scarboro,' Ontario. One specimen, No. 14522 

 — G. J. Hinde. 



Pterostichus fractus. 



PUrostirhiisfractus Scudd., Tert. Ins. N.A., 527, PI. i, figs. 29, 30 (1890). 



Closely allied to P. destitutus, with the same early union of the fifth and 

 sixth stripe, but still smaller and with less distinct strial punctuation, this 

 being indeed very inconspicuous. A single elytron is preserved, with the 

 extreme apex broken. There is a distinct punctum in the third interspace 

 opposite the union of the fifth and sixth strise, which is just befoi'e the 

 break. The interspaces are flattened, as in P. destittitus, and the intimate 

 structure of their surface is exactly as there, except in showing scarcely 

 any sign of reticulation. 



Length of fragment, 4-5™" ; breadth, 2""". 



Interglacial clays of Scarboro,' Ontario. One specimen, No. 145-32 — G. 

 J. Hinde. 



Pterostichus destructus. 



Pterostichus ckstrndus Scudd, Tert. Ins. N.A., 527, PL i, fig. 46 (1890). 



A couple of elyti'a, from each of which the entire apex is broken, closely 

 resemble P. jxUruelis Dej. in shaj^e and sculpture, but repi'esent a species 



