THE CANADIAN ENTOMOLOGIST 215 



which occur in 0. americamis. Clavus and corium, anteriorly, 

 with coarse scattered punctures. Nervures of the membrane 

 indistinct. General surface with indications of the customary bluish 

 grey markings, unless denuded, when the whole upper surface is 

 smooth and shining. Beneath on sternum and venter paler, with 

 rostrum, acetabular, coxae, legs and external angle of metathorax pale 

 yellow. Prosternum rather coarsely punctate. 



Length, 4 mm. Width of pronotum, 2 mm. 



Described from three males and one female collected by Mr. 

 Nathan Banks at Glencarlyn, Virginia, in June. Judging from the 

 meagre descriptions and indifferent illustrations at hand, I am led 

 to the opinion that this species is most nearly related to 0. margin- 

 atiis Latr., of Europe. But having no specimens of that species for 

 comparison, I am, at this time, unable to settle the point. 0. 

 banksi can readily be separated from americanus by its difference in 

 color markings, and the character of the pronotum. Apex of mem- 

 brane is more narrow than in americanum. 



Ochterus flaviclavus, n. sp. 



Brownish-black. Very much the appearance of 0. americanus, 

 to which it is closely related, having the usual carinate and rugulose 

 face. However, somewhat smaller than that species with the 

 clavus entirely yellow. The pronotum with the lateral margins 

 gently rounded, more converging anteriorly, the anterior margin 

 being narrower than the width across the eyes; the anterior angle 

 of the pronotum sharply rounded and not projecting anteriorly as 

 in americamis: the expanded part of lateral margins narrower, with 

 a small yellowish spot just posterior to the anterior angle; the hu- 

 meral angle almost rectangular, projecting but a trifle beyond mar- 

 gin of corium. Extreme edge of corium very narrowly pale, but 

 the usual pale marginal spots are lacking. Surface with the usual 

 pearl grey spots. Beneath, with the sternum slate grey; the aceta- 

 bula, posterior and lateral flange of the prosternum, elytral flange 

 anteriorly, posterior margin of metasternum, legs and venter, pale; 

 legs lightly infuscated. Prosternum, mesosternum externally and 

 metasternum before the posterior angle distinctly punctate. 



Length, 33^^ mm.; width of pronotum, about 2 mm. 



Described from a single male in the collection of Mrs. Annie 

 Trumbull Slosson, taken by her at Ormond, Florida. 



