44 CONTEIBUTIONS TO CANADIAN PALAEONTOLOGY. 



OxYPORUS Pabricius. 

 Oxyporus stiriacus. 



Oxyporus stiriacus ScuDD., Tert. Ins. N. A., 505, PI. i, fig. 36 (1890). 



A single elytron, less than twice as long as broad, somewhat broken at 

 the base, with very straight and almost parallel sides, enlarging to the 

 least possible degree apically. It is a rather small species, of delicate 

 texture, with smooth, unsculptured surface, except for the slightly 

 impressed lines which follow the sutural and outer margins, giving a 

 thickened appearance to either edge. The outer margin is gently and 

 regularly convex, the outer posterior angle gently rounded, and the deflexed 

 portion of the outer margin very narrow, equal, and reaching as far as 

 the rounded apical part. 



Length of elytron, l-S"""; breadth, 1-12'™'. 



Interglacial clays of Scarboro', Ontario. One specimen, No. 14552. — 

 G. J. Hinde. 



Lathrobium Gravenhorst. 

 Lathrobium interglaciale, 



Lathrobium interglaciale Scudd., Tert. Ins. N. A., 506, PI. i, fig. 38 (1890). 



A single elytron indicates a species nearly as large as L. grande LeC, but 

 with coarser sculpturing than is common in this genus and more as in 

 Cryptobium ; but in the latter genus the posterior margin is outwardly 

 produced. The inner basal angle indicates a pretty large scutellum. The 

 elytron is of nearly uniform width, with a nearly straight outer margin 

 but gently rounded, the greatest width close to the tip ; the posterior 

 outer angle is rounded off and the posterior margin straight. The deflexed 

 portion of the outer margin is narrow, subequal, rapidly tapering just 

 iDefore its termination, extending just beyond the middle of the apical 

 half of the elytron ; inner margin simple. Texture dense, the surface of 

 elytron coarsely, rather shallowly, and not very closely, irregularly punc- 

 tate, and marked besides by four or five short, shallow, irregular, longi- 

 tudinal grooves just within and before the middle. 



Length of elytron, 2-5"™'; width of upper surface, 1-25'™'. 



Interglacial clays near Scarboro', Ontario. One specimen, No. 14555 — 

 G. J. Hinde. 



