50 Mr. D. Sharp s Contributions to the 



puboscentibus ; abiloniliic subtilissiine ]ninctato. Long. 

 Corp. (capite abdominecpic extciisls) 1^ lin. 



Antenna3 slender, scarcely thickened towards the extre- 

 mity, yellowish, with joints 5 — 10 nearly black, each joint 

 longer than broad. Head infiiscatc, very indistinctly 

 pnnctnrcd, but with a distinct pubescence. Thorax ob- 

 scure reddish, scarcely visibly punctured, but with a 

 delicate, distinct pubescence ; the front angles depressed 

 and rounded, the sides scarcely curved ; the hind angles 

 obtuse, the base rounded, very slightly cmarginate in front 

 of the scutelluni. Elytra a good deal longer, and slightly 

 broader than the thorax, infuscate-red, with the shoidders 

 paler, their punctuation close and fine, but more visible 

 than on the other parts of the surface ; the extremity only 

 obsoletely sinuate near the outer angle. Hind body much 

 narroAved towards the extremity, reddish, with the 4th, 

 5th and 6th segments infuscate, the apex yellowish ; the 

 dorsal segments ver}" finely punctured and pubescent. 

 Legs yellowish, rather long and slender. 



The male shows no marked external sexual characters ; 

 the hind margin of the dorsal j)late of the 8th segment is 

 almost truncate, being only very slightly emarginate. In 

 the female the hind margin of the dorsal plate of the 8th 

 segment is deeply emarginate ; and the same plate shows, 

 at the extreme base on each side, a deep transverse fovea 

 of which there is no trace in the male. 



Para ; several specimens taken two or three years ago. 



Ohs. — A variety occurs in the same locality; it is 

 almost unicolorous reddish, except the middle of the 

 antennte. 



Myrmigastek, n. gen. 



Tarsi anteriores (4- ?) intermedii et posterlores 5-arti- 

 culati. 



Protliorax lateribus rotundatis, postice latioribus. 



Prosternum carinatum, anterius acute elevatum. 



Elytra lateribus havid carinatis. 



Abdomen conicum, basi fortitcr constrictum, segmentis 

 dorsalibus transvcrsim convexis. 



Corpus anterius latins, partibus anterioribus pilis brevi- 

 bus crassis instructis. Antenna? sat crassa^, evidenter 

 pilosellre. Thorax coleoptera latitudine excedens, basi 

 utrinque emarginatus, angulis posterioribus acutis retror- 

 sum spectantibus, lateribus rotundatis, angulis anteriori- 



