112 Trans. Acad. Sci. of St. Louis. 



sixth with a small and acutely angulate incisure, much deeper than 

 wide and a ninth or tenth as wide as the apex, the latter at each 

 side inwardly and anteriorly oblique and rectilinearly truncate, with 

 the edge beveled, becoming very thin and translucent, the surface with 

 longer hairs along the margins of the notch; female unknown. Length 

 4.7 mm.; width 0.82 ram. Canada (Toronto) lacastris n. sp. 



In the third supplement to the Henshaw catalogue it is 

 stated on page 10, that No. 2514 {niffer Lee), is a synonym 

 of the European quadratus Payk. This must surely be in 

 error for No. 2512 {punctulatus Lee), as specimens of quad- 

 ratus sent me by Mr. Reitter, strongly resemble the latter but 

 bear no likeness at all to niger; quadratus is, however, not 

 the same as pujictulatus, having the male impressions of the 

 venter very much deeper and differing besides in its denser 

 sculpture, smaller eyes, more circularly rounded base of the 

 head and other characters. In this supplement No. 2512 

 (punctulatus Ijec.) is said to be the same as the European 

 terminatus Grav. I do not have terminatus before me at 

 present, but the chances are very greatly against the accuracy 

 of any such identification. 



Deratopeus n. gen. 



The species of this genus greatly resemble Tetartopeus^ 

 differing principally in the form of the gular sutures and 

 rather shorter and stouter palpi and tarsi, small size, more 

 slender form and some other structural features. They are 

 few in number at present, those in my cabinet being readily 

 separable by the following characters — taken in both in- 

 stances from the male : — 



Body deep black throughout, the elytra testaceous in apical fifth or sixth, 

 somewhat more broadly toward the sides; legs pale ferruginous, the 

 antennae blackish, slightly paler at tip and notably so toward base ; 

 head small, longer than wide, parallel and nearly straight at the sides to 

 the broadly rounded basal angles, the base arcuato -truncate ; eyes mod- 

 erately small; antennae rather thick but filiform, as long as the head 

 and prothorax, the medial joints barely one-half longer than wide, the 

 punctures strong but very sparse; prothorax distinctly elongate, much 

 wider than the head, the sides very feebly converging and nearly straight, 

 the punctures coarse, deep and sparse; elytra quadrate, parallel, a third 



