South-American Coleoptera, 295 



Evidently allied to Lissonotus, but with more linear an- 

 tennas, longer muzzle, elongate scutellum, longer and more 

 parallel elytra. The general form calls to mind some Spliceno- 

 thecus ; but the structure of the antennas and the characteristic 

 tubercle behind the eyes show its affinity with Lissonotus. 



Panckylissus cyaneipennis^ n. sp. 



Niger, politus, nitidissimus ; thoraco sanguineo, medio macula 

 rotundata nigra ; elytris cyaneis, pectore abdominequo san- 

 guineis. 



Long. 9 1 lin. 



Forehead -with a rather deep longitudinal impression be- 

 tween the antennas. Thorax a little broader than long, 

 convex, evenly rounded at the sides, narrowed in front, a 

 little narrowed before the base, with a few clear punctures 

 scattered over the disk. Elytra deep purplish blue, with 

 close but extremely obscure punctuation ; the apex obtuse, 

 finely fringed with black pile. 



Hah. Sarayacu. 



Distenia humeralis, n. sp. 



Supra seneo-viridis, subtus asnea ; tborace rugoso, lateribus spina 

 acuta instructis; elytris fortiter, dense, irregulariter punctatis, 

 postice subtiliter dense punctatis, humeris vitta brevi coccinea, 

 sutura, marginibus strigaque obliqua post medium griseo-pube- 

 scentibus ; antennis nigris, articulis basi griseo-pilosis. 



Long. Gg lin. 



Head rugose above. Antennas much longer than the whole 

 insect, slender, blackish ; the basal joint tinted with asneous, 

 subcylindrical, densely rugose ; the other joints grey at the 

 base, black at the apex. Thorax densely rugose, strongly 

 constricted in front and before the base, angular in the 

 middle of the side and furnished with a short spine. Scu- 

 tellum clothed with whitish pubescence. Elytra wider than 

 the thorax at their base, much narrowed posteriorly, bluish 

 green, very strongly, densely, and irregularly punctured for 

 nearly two thirds their length, at which point there is an 

 oblique narrow streak of white pubescence; the surface be- 

 yond this is finely punctured ; each elytron has an elongate 

 red spot near the shoulder ; the outer apical angle has a strong- 

 tooth. Femora unarmed. 



Hob. Chiguinda. 



The apical joint of the palpi is securiform, the prosternal 

 process is less narrow than is usual, the claw-joint of the 

 tarsi is very short, and the femora are unarmed at their apex. 



