April, 1344.] 41 



Head wider than the thorax ; a wide and shallow excavation hetween the 

 eyes, with an obsolete longitudinal carina in the middle; black, coarsely 

 punctured : antennae ? palpi whitish : thorax much narrower than the elytra, 

 more contracted behind than before, with the sides rounded; more strongly 

 punctured than the head ; an obsolete, impressed dorsal line, black : elytra black, 

 punctured as the thorax: abdomen deep black, punctured, and narrowly rnar- 

 ginated : feet rufous, with the tip of the femora and base of the tibite brownish. 



Differs from geniculatus, Say, in being smaller and less robust ; in being less 

 profoundly and coarsely punctured, in having the thorax channelled in the 

 middle, and chiefly in having the sides of the abdomen marginated. From fe- 

 moral us, Say, which it somewhat resembles, it differs, aside of other characters, 

 in being much larger. 



OXYTELID.fi, Leach. Er. 

 Oxytelus, Grav. 



1 0. basalts. Black; base of the antenna? and feet rufo-testaceous ; margin 

 of the thorax crenulate. — 2A I. long. Pennsylvania. 



Size, form and sculpture of rugosus, Fab. Antennas much longer than the 

 head ; third joint a little longer than the second ; fuscous, four first joints dark 

 rufo-testaceous: head as wide as the thorax: widest at base; black, slightly 

 piceous, profoundly but not densly punctured, and with numerous longitudinal 

 fine wrinkles, more numerous at the sides than on the middle: palpi dark rufo- 

 piceous ; mandibles pitchy-black: thorax almost orbicular, as wide as the elytra, 

 somewhat densely and profoundly punctured, and finely wrinkled ; dorsum tri- 

 sulcate, nearly in the form like the letter M ; lateral margins depressed, with the 

 edges obsoletely and finely crenate; black, somewhat piceous: elytra a little 

 longer than the thorax, black with a rufo-piceous tinge, particularly towards 

 the base; profoundly punctured, and longitudinally finely wrinkled: abdomen 

 black, faintly rufous at apex; indistinctly punctured: feet rufo-testaceous. 



The European analogue of this species is the 0. rugosus, Fab., from which it 

 does not essentially differ. 



2. 0. pygmasus. Black; elytra dark ferruginous; feet pale testaceous. — § b 

 long. Pennsylvania. 



Antennae a little longer than the head, incrassated towards the tip, brown, 

 with the base piceous: head ( 9 ) shghtly narrower than the thorax, minutely 

 longitudinally wrinkled each side: palpi dull testaceous: thorax slightly 

 narrower than the elytra, with the base and sides rounded, and apex truncate; 

 faintly tri-sulcate, and minutely longitudinally wrinkled; black, opake : elytra 

 dull ferruginous, almost black, indistinctly longitudinally wrinkled : abdomen, 

 black, shining : feet pale testaceous. 



3.0.parvulus. Black; elytra dark fuscous; base of the antennas piceous. — £ 1. 

 long. Pennsylvania. 



Antennae a little longer than the head, incrassated towards the tip, fuscous, 

 with the base piceous : head a little narrower than the thorax, longitudinally 

 impressed each side, and longitudinally, and almost invisibly wrinkled; vertex, 

 as is usual, grooved : thorax a little narrower than the elytra, slightly con- 

 tracted behind; base obtusely rounded ; sides slightly rounded, with the apex 



