8 



OKTHOPTEEA. 



straight, moderately elevated antrorse rami, which are rather widely open below. Pronotum 



somewhat depressed, elongate, truncate in front, subulate behind, flat above, slightly depressed at the 



shoulders, granulate, coarsely rugose anteriorly, slightly 



swollen on each side between the end of the humero-apical 



carina and principal sulcus ; the shoulders narrow, humeral 



angles very obtuse, sides of the hind process straight, mid- 

 carina scarcely distinct, lateral carinas prominent ; humero- 

 apical carinas distinct, continued forward in a straight line on 



the shoulders to meet the lateral carinae 1 millim. behind the 



principal sulcus, and separated from them by a deep narrow 



groove opposite the apex of the elytra. Elytra elongate, four 



times as long as wide, narrowly lanceolate, subacute at each 



end, nearly straight above, arcuate below. Anterior and 



middle femora slender (6 x 1, 5 x 1), with undulate margins ; 



hind femora long and slender, genicular and femoral lobes small. 



to or a little longer than the first. 

 General colour rufous-brown, varied with fuscous, with blotches of pale green on the hind femora and on 



sides of the pronotum. 

 Total length, § , 12*5 : pronotum 11*4; post. fern. 6 ; antennas 4 ; width of the shoulders 2'6 millim. 



Ildb. Nicaragua, Grey town (Shimek, in coll. Bruner 1 ). 



Third joint of posterior tarsi equal 



One female. 



PLATYTHORUS, gen. nov. 



Belated to Amorphopus, but possessing elongate antennas, with very large basal joints inserted on a level with 

 the lower margin of the eyes ; the anterior and middle femora little expanded ; posterior tarsi with the 

 first joint longer than the third ; lateral lobes of pronotum turned outward, obliquely truncate, obtuse, 

 and rounded. 



1. Platythorus camurus, sp. n. 



Body much depressed, granulate. Eyes of moderate size. Vertex horizontal, one and one-third times as wide 



as one of the eyes, squarely truncate, with small but distinct mid-carina, the transverse carinas separated 



from it by a shallow groove, but continued into a low ridge running backward along each side of the 



mid-carina. Antennae elongate, distinctly passing the shoulders, filiform, 



joints 7-1 the longest, the basal joint two-thirds the width of one of the 



eyes in length, inserted in a line with the lower margin of the eyes. Eacial 



costa low above, forking midway between the ocelli and vertex into high, 



narrowly divergent rami, which form in profile a strong protuberance 



opposite the points of insertion of the antennas. Pronotum strongly 



depressed, granulate, flat above, truncate in front, cuneate behind, with 



pinched, almost mucronate apex ; mid-carina distinct in front of and 



behind the shoulders, nearly obsolete elsewhere, in profile undulate ; lateral 



carinse prominent, divergent anteriorly, humeral angles very obtuse ; lateral 



lobes laminately produced, obliquely truncate at the apex, angles obtuse, 



rounded. Elytra and wings absent. Anterior and middle femora strongly 



carinate, with sinuato-lobate margins ; hind femora partaking of the 



general depressed form of the body, but very stout from side to side ; femoral lobes small, genicular lobes 



prominent, acutely pointed. 

 Total length, $ , 9-6 : pronotum 8-5 ; post. fern. 6-3 ; antennse 5-5-6 (estimated) millim. 



Hab. Nicaeagua, Chontales (Janson). 

 One female. 



