142 WicMiam — Fossil Beetles from the Sangamon Peat. 



under the name P . projpinquus G. & H., but the surface gloss 

 is entirely different. 



According to Scudder's identifications, the genus Platynus 

 was very abundant in the Scarborough beds, whence he has 

 described eleven species. Six others, under the generic names 

 of Platynus, Agonum and Anchomenus, have been character- 

 ized from the Pleistocene deposits of France, Germany, Schles- 

 wig-Holstein and Galicia. 



Platy:n^us subgelidus new species.' 



Represented by a single practically entire elytron which is of 

 a deep shining black color, the onter margin rather strongly 

 curved, apparently much as in the recent P. ovipennis^ extreme 

 edge sharply and narrowly reflexed, humeral angle not fully 

 exposed and, judging from the outline of the side, probably 

 not very prominent. Strige moderately deep and coarse basally 

 and discally, finer apically, their punctures strong but of medium 

 size, rounded or very little transverse and extremely close 

 together. These punctures become much finer towards the 

 apex, following the reduction of the strise. Interstitial areas 

 not visibly punctate but in some lights appearing very minutely 

 transversely corrugate, this wrinkling becoming very strong 

 apically (through folding of the integument in fossilization) so 

 as to obscure the tips of the strise. In consequence, it is not 

 possible to say just where the fifth and sixth are joined, but 

 this point is not far from the elytral apex. The scutellar stria 

 is short, strongly punctured and not interfering with the first 

 discal. The ocellate punctures of the outer margin, if present, 

 are obscured by wrinkling. Length of elytron as exposed, 

 6*00™™, in life possibly a trifle longer ; greatest width, a very 

 little over 2-00™"'. 



A very careful comparison of this specimen with descriptions 

 and figures of all of Scudder's species of Platynus from the 

 Scarborough beds has convinced me that it is not referable to 

 any of them though approaching (but exceeding) his P. desue- 

 tus in size. If reliance is to be placed upon the figure, P. 

 sitbgelidus has much more closely punctate strise. In com- 

 parison with recent species, P. subgelidus has elytral sculpture 

 a good deal like that of P. crenistriatus Lee, but is larger. 

 I do not venture to express an opinion as to which group it 

 should enter. 



Platynus calvini new species. 



Pepresented by a pair of partly overlapping elytra, shining 

 black and moderately heavy in texture, the striae impunctate, 

 strongly impressed but not coarse, reaching the raised elytral 



