178 ACADEMY OF NATURAL SCIENCES 



2. L. SULCIROSTRIS. — Cinereous ; rostrum trisixlcated, trans- 

 versely indented at base ; elytra striate. 



Inhabits Arkansa. 



Body densely covered with minute, cinereous scales : head with 

 black punctures; transversely [317] indented or contracted at 

 the origin of the rostrum : rostrum trisulcated, grooves profound, 

 middle one dilated, wider before : mouth and club of the an- 

 tennae blackish : thorax inequal, with irregular rugae and punc- 

 tures; a longitudinal, impressed line : elytra acutely striated, and 

 with dilated, slightly indented punctures all covered with cine- 

 reous scales : beneath immaculate : anterior feet more robust. 



Length seven-twentieths of an inch, exclusive of the rostrum. 



Found in the same districts with the preceding species, which 

 it resembles, but is smaller ; the elytra are destitute of blackish 

 lines, and the punctures and strije are altogether different. 



[Also an Ophryastcs. — Leg.] 



3. L. iMBRiCATUs. — 'Body covered with minute scales, punc- 

 tured ; a profound, frontal puncture. 



Inhabits Arkansa. 



Body covered with dense, minute, somewhat imbricated scales, 

 without intervals; above dusky brassy or blackish, punctured: 

 head with a profound puncture between the eyes : rostrum with 

 a dusky line in the middle : thorax, a dorsal, slightly impressed, 

 punctured line, and several dilated, indented punctures covered 

 with scales; a dilated, cinereous, dorsal line : elytra with very 

 slightly impressed striae containing profoundly impressed punc- 

 tures; sides and tip white, the latter exhibiting an undulated 

 outline above ; three subequidistant, equal, white spots each side 

 of the suture, [318] and another at the middle of the base; an 

 oblique line from behind the humerus terminates at the middle. 



Length three-tenths of an inch. 



Near the llocky Mountains, and on the Missouri. This species 

 varies in depth of coloring, and the cinereous, subsutural spots 

 are sometimes confluent with bi-anches from the margin, so as to 

 form three cinereous bands, but I believe that the spots at base 

 are always insulated. 



[Belongs to Epicserus. — Leg.] 



4. L. TESSELLATUS. — Imbricate, cinereous. Varied with brown- 



[Vol. III. 



