1873.] 235 



The mandibles in the $ of E. ferrugineus are strongly angulated at 

 their outer side, and project beyond the lateral margins of the apex 

 of the'epistoma and base of the labrum. It would be interesting to 

 discover the $ of the species just described, to see if a like peculiarity 

 exists. 



LIODEMA, Horn. 



(Eev. Tenebr. Amer. N. of Mexico, p. 385). 



In addition to the character drawn from the peculiar form of the 

 mesosternum (very accurately defined by Dr. Horn), it is necessary 

 to add, at least for the species described below, that the antenna) are 

 more or less serrate at their inner side, and the epipleural fold is 

 rather broadly continued to the apex of the elytra. 



LlODEMA KlESCHI, sp. %. 



Broadly ovate, convex, blact, opaque ; head, margins of protliorax, and scu- 

 tellmn, dull red ; head and prothoras indistinctly and very minutely punctulate, 

 the latter with two shallow, obliquely-placed fovere at each side the middle of the 

 disc ; on each elytron, a dull red crescent-shaped baud, curving backwardly from 

 the base, at the scutellum, to the shoulders (but not nearly reaching the margin) ; 

 the apex with a large, dull red patch, extending to the sides, suture and apex, and 

 having on its centre an oblique blotch, black ; the reflexed margins dull red ; very 

 finely seriate-punctate, the intervals rather broad ; under-side reddish-bro^vn, 

 shining, legs and mouth organs shining testaceous ; antennae wanting ; mesosternal 

 process elongate, sides parallel, sub-truncated in front ; abdomen glabrous, bi-foveate 

 at each side, and longitudinally strigose. Long. corp. 2f lin. 



Hah. : Bogota ; one example. 



LlODEMA OBTDENSE, Sp. n. 



Broadly oval, sub-depressed, black, elytra opaque, head and prothorax slightly 

 shining ; the former entirely, the latter at the margins, rufescent ; scutellum slightly 

 rufescent ; on each elytron, a dull red crescent-shaped band near the base, as in the 

 preceding, but more obscure and with its lower margin crenulated ; there is also a 

 dull red band near the apex, but it does not reach the suture, and its upper edge is 

 sinuous, its lower crenulate, or sub-dentate ; the extreme apex is also dull red ; 

 apparently impunctate, but, when viewed under a high power, the surface is seen to be 

 very minutely seriate-punctate ; the reflexed margins black as far as the pre-apical 

 band ; under-side reddish-brown, somewhat shining ; legs, mouth organs, and an- 

 tenna;, shining testaceous ; abdomen pubescent, finely punctured ; mesosternal pro- 

 cess short, broad, rounded iu front. Long. corp. 2^ lin. 



Hah. : Obydos, Lower Amazons ; one example. 



Very near the preceding, but quite distinct by the characters 

 indicated. 



