424 [June 



scarcely thicker, obconic, joints 5 — 10 equal, thick, nearly twice thicker 

 than long, the last joint not longer than thick, obtuse, acuminate; tes- 

 taceous, the base yellow. Head scarcely narrower than the thorax ; 

 front even, with sparse dispersed punctures; mouth testaceous. Thorax 

 rather narrower than tbe elytra, more than twice shorter than broad ; 

 base moderately, and the sides slightly, rounded; apex truncate; ante- 

 rior angles straight, rather deflexed, posterior angles obtuse ; rather 

 convex, the base finely margined, the sides with sparse, fine, scattered 

 punctures, with long, sparse, white hairs. Elytra more than half again 

 as long as the thorax, subdepressed, densely and finely punctured, with 

 long, sparse, white pubescence; piceous, humeri paler, somewhat testa- 

 ceous. Abdomen above somewhat glabrous, beneath with long sparse 

 white pubescence ; black, the base and apex piceous. Legs flavo-testa- 

 ceous. — Erichson. 



Group III. — Gymnusae. — Internal lobe of the maxillae elongated, entirely cor- 

 neous, hooked at the tip, and serrate internally. 



In this group the head is deflexed, pointed in front; the antennae 



slender; the thorax and elytra broad, and the abdomen strongly but 



gradually narrowed behind, so that a form is assumed approaching that 



of some members of the next tribe \_Tachyporini.~] The species are 



found in very wet places. — LeConte. 



A. Labial palpi setaceous, with two indistinct joints; anterior tarsi 4-jointed, 

 posterior ones 5-jointed; ligula short, entire. 



Genus 16.— MYLLJENA, Erich. 

 Myllaena fuscipennis, Kraatz. 



Myllczna fuscipcnnis, Kraatz, Linn. Ent. Zeits. xi, p. 36. 

 Black, opaque, cinereo-sericeous; antennae, and elytra entirely, or the 

 apex, fuscous ; legs testaceous; posterior angles of the thorax somewhat 

 straight. Length f line. 



Hab. — Louisiana. 



Very similar to M. intermedia Erich. Antennae a little shorter, fus- 

 cous, first joint yellow. Mouth yellow. Thorax narrowed anteriorly, 

 sides slightly rounded, the base slightly bisinuate ; posterior angles 

 prominent, almost straight. Elytra scarcely longer than the thorax ; 

 either entirely or the apex only, fuscous ; apex of abdomen rufo-testa- 

 ceous. — Kraatz. 



