190 long's second expedition. 



MELANDRYA Fabr. Latr. 



1. M. striata. — Black; thorax with three grooves; front 

 with an impressed dot; elytra striate and punctui'ed. 

 Inhabits the middle and northern States. 

 Serropalpus canaliculatus Melsh. Catal. 



Head with numerous minute punctures ; a distinct rather 

 longitudinally oval impressed spot between the superior part of 

 the eyes; palpi at tip of the terminal joint, and one or two ter- 

 minal joints of the antennas dull rufous ; thorax gradually dilating 

 to the base, from the width of the head to that of the elytra : 

 surface minutely punctured with small sparse hairs ; three dilated 

 longitudinal grooves, or undulations, obsolete before ; lateral edge 

 almost rectilinear to near the posterior angles, where it is a little 

 incurved, it is vertically rounded before the middle, and acute 

 behind the middle ; posterior angles nearly right angled ; scutel 

 suborbicular, convex, punctured; elytra, striae dilated, with 

 numerous punctures, those of the base being more distinct as 

 the striae are not so profound in that part. 



Length three-fifths of an inch. 



A specimen of this interesting insect occurred in the North- 

 west Territory. My friend, the Rev. John F. Melsheimer, with 

 whom I corresponded on the subject of this species, agrees with 

 me perfectly in the propriety of placing it in this genus, and in 

 its being altogether different from the S. canaliculatus Tlliti . 

 Melandrya canaliculata Fabr. This conclusion indeed is irre- 

 sistible, when we compare our insect with the description of that 

 of Europe, and [287] with the figures given by Olivier, Panzer, 

 Latreille and others. 



2. M. labiata. — Black; lab rum rufous; elytra destitute of 

 striae. 



Inhabits Pennsylvania. 



Head with minute punctures ; no impressed frontal spot, la- 

 brum distinctly rufous; antennae, terminal joint at tip, tip of the 

 palpi and of the tarsi, rufous ; thorax with the lateral edge regu- 

 larly arquated ; a deep slightly arquated groove on each side 

 almost divided transversely into two impressed dots by an obtuse 

 elevated line ; a central nearly obsolete impressed line ; scutel 



