AMERICAN COLEOPTERA. 45 



Group 1. — Podahri. 

 Although as will be seen below, the species of this group differ in the 

 form of palpi, as well as in the tarsal claws, they seem to me to indicate 

 but one natural genus. They are more numerous in the northern part 

 of the Continent, and gradually fade out towards the tropics. 



FODABRIJS Westwuod. 

 In this genus the gular sutures are confluent at the median line, and 

 the head is prolonged and narrowed behind the eyes, so as to form a 

 distinct neck not covered by the prothorax, which is nearly truncate, or 

 even s(jmewhat emarginate in front. The seventh ventral segment of 

 the % is truncate, and the eighth is exposed, sometimes triangular, 

 sometimes with parallel sides and obtusely rounded at tip. The seventh 

 ventral of the 9 is triangular, subsinuate each side near the tip, which 

 is frequently slightly nicked, though I have not found use for this 

 character as a specific distinction, since from the drying of the specimens 

 it is difficult to observe. The three divisions are so diff"erent as almost 

 to entitle them to rank as distinct genera, though some forms link them 

 together rather closely. 



Claws armed with a long acute tooth, causing them to appear broadly cleft; 

 maxillary palpi with last joint triangular; front tibire of 'J, more or less 



sinuate in fftrni ^' 



Claws armed with a broad nearly rectangular basal tooth; maxillary palpi with 

 last joint elongate, slightly triangular, the inner and apical margin being 



rounded together • "• 



Claws with a slender tooth nearly as long as the upper part and approximate to it, 

 causing them to appear narrowly cleft — C. 



A. — Brachynotus Kirby. 



Eighth ventral 'J, triangular, flat, rounded at tip 2. 



Eighth ventral ■?, parallel, obtusely rounded at tip 8- 



2.— Last joint of maxillary palpi with apical side oblique, angle distinct, eyes 



prominent '^' 



Last joint of maxillary palpi nearly transversely truncate, eyes small; black, 

 mouth part of first joint of antenna and sides of prothorax yellow; the 

 latter much wider than long, rounded on the sides and broadly margined ; 

 head densely punctured, prothorax punctulate, elytra finely rugose ; % with 

 front tibire dilated inwards into a thin plate. Length 7—10 mm. ; Cala. 



]. latimanus Motsch. 

 a. —Upper surface dull yellow, occiput and disc of prothorax piceous. 

 Last joint of maxillary palpi with the apical side very oblique, inner angle 

 rounded, indistinct ; eyes small ; black, opake, finely pruinose with pubes- 

 cence; sides of prothorax pale; head coarsely punctured, prothorax sparsely 

 punctulate, much wider than long, rounded and explanate at the sides, 

 dorsal line long and deep; elytra less finely rugose, with the side margin 

 sometimes pale; 9 antennse scarcely half as long as the body, joints 2—4 

 slightly increasing in len gth ; % antennae three-fourths as long as the body, 



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