160 ACADEMY OF NATURAL SCIENCES 



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PYTHO Latr. 



P. PALLIDA. — Thorax with two impressed lines at base ; cly- 

 peus emarginate before. 



Inhabits Arkansa. 



Body pale reddish-brown, very much depressed, flat above, 

 minutely punctured : clypeus on the anterior edge concave, tjie 

 angles acute, (more prominent in one sex :) thorax, anterior edge 

 very concave : anterior angles obtusely rounded ; posterior edge 

 perfectly rectilinear ; posterior angles acute ; base with two im- 

 pressed lines abbreviated before : elytra with punctured strise, 

 lateral edge slightly elevated. 



Length one-fifth of an inch nearly. 



This curious species was found on the banks of the river Ar- 

 kansa by Mr. Thomas Nuttall. 



It is found in various parts of the United Sates. 



[Belongs to the genus Adelhia Dej., of which, however, I have 

 not yet seen any description. — Leg.] 



tEDEMERA Latr. 



1. (Ft. RuncoLLis. — Black; thorax rufous, with two pro- 

 foundly indented spots. [272] 



Inhabits the United States. 



Necydaln ruficolUs Knoch in Melsh. Oatal. 



Body black, with minute hairs : mouth, excepting the palpi, 

 somewhat piceous ; beneath yellow : thorax rufous, narrowed be- 

 hind : two profoundly indented spots placed one each side of the 

 base, a less profoundly indented one at base : elytra purple-black, 

 minutely granulated ; three remote elevated lines. 



Length one-fourth of an inch. 



Found specimens on the Missouri and near the Rocky Moun- 

 tains. Mr. Nuttall also obtained them on the Arkansa. 



[Belongs to Asclera ; afterwards described as Ichnomera cari- 

 nata Newman, Ent. Mag., 5, 378 — Leg.] 



2. G^l. FRAXiNi. — Black : thorax rufous, longitudinally ob- 

 long, narrowed behind. 



Inhabits the United States. 

 Neci/dalin fraxini Melsh. Catal. 



Body blackish-browu, with minute hairs : mouth piceous an- 

 1824.] 



