98 fMar, 



Elytra not sinuate posteriorly. Abdomen scaphoid, the sides strongly elevated. 

 AViiigs present. 



The species on which this genus is founded has the facies of Orph- 

 iiehius vcniricosns Motsch. (Bull. Mosc. 185S, 2, tab. 1, fig. S), from 

 Colombia ; the structure of the posterior tarsi, however, agrees with that 

 of Myrmedonia, that of the mesosternura with OrpTinehius as detailed 

 by Sharp in Biol. Centr.-Amer., Coleopt. i, 2, p. 209, 1883. Much more 

 material appears essential before a classification of a satisfactory nature 

 can be arrived at in regard to Mj/rmedonia and the allied groups. 



Orphnehiota riifocastanea, n. sp. 



Shining-, reddiab-chestuut, the elytra brownish-yellow, with the sides 

 obscurely darker ; first four joints of the antennae and legs testaceous, tlie 

 apices of the middle and posterior femora a little infuscate. Length 3"75 mm. 

 Head transverse, nearly as broad as the thorax, very finely and very sparingly 

 punctured ; the eyes large, the temples gradually and broadly rounded. 

 Antennae elongate, the 2nd joint shorter than the ord, 4th to the 8th lunger 

 than broad, gradually decreasing in length, 'Jtli and 10th about as long as 

 broad, the 11th elongate, pointed, nearly as long as the two preceding together. 

 Thorax as long as broad, rounded at the sides anteriorly, slightly narrowed and 

 feebly sinuate in front of the obtuse posterior angles, impunctate, glabrous. 

 Elytra as long fis and considerably broader than the thorax, transverse, finely, 

 not very closely and asperately punctured, finely pubescent, the ground- 

 sculpture very fine and obsolete. Abdomen scaphoid, the lateral margins 

 much elevated ; 7tli dorsal segment coarsely and rugusely striate for tiie 

 {interior two-thirds, much more finely so posteriorly, and less shining, al.^o the 

 other segn e its impimctate, shining, and glabrous. 



cJ. 7th dorsal segment with a small fiat tubercle immediately in front of 

 the posterior margin in the middle; 8th dorsal segment with a deep triangular 

 excision ; supero-posterior angles of the ventral segments prominent. 



Hah. Kandy ( (?. E. Brjjant). IVpe in my own collection. 



Myrmedonia opacicollis, n. sp. 



Shining rufo-castaneous, the thorax opaque, impunctate, with the disc 

 infuscate, the elytra obscurely infuscate ; antennae and legs reddish-testaceous. 

 Length 3 mm. A small robust form, with a dull, impunctate and densely 

 coriaceous thorax (which has in certain lights a somewhat purplish "bloom") 

 and very shining head, elytra, and abdomen, which are destitute ot ground- 

 sculpture. Head large, transverse, the eyes moderately large, the temples 

 rounded and a little dilated ; the upper surface with a few setiferous punctures, 

 otherwise practically impunctate. Antennae moderately long and stout, the 

 1st joint rather stout, grooved above throughout its length, the 2nd and 

 ord shorter, subequal, the 4th a little longer than broad, the 5th to the 

 10th transverse, graduall}' increasing in breadth, the 11th elongate, gradually 

 pointed, longer than the two preceding together. Thorax wider tijun the head. 



