Sfaplii/linidcc of the Amazon Valley. 55 



the punctuation being less evident on the apical segments. 

 Beneath it is closely and distinctly punctured. The basal 

 joint of the posterior tarsus about as long as the three 

 following together. 



In the female the 6th segment above has a longitudinal 

 elevation on each side ; the 7th segment is covered Avith 

 granulations not much elevated, but with their points 

 directed backwards ; these granulations arc larger towards 

 the extremity of the segment, and the hind margin is 

 slightly emarginate. 



Ega ; one specimen, which I consider to be a female. 



Obs. — Though rather closely allied to 31. scahripeniiis, 

 31. pollens will be very readily distinguished therefrom by 

 the denser and finer punctuation of the thorax and elytra, 

 and by the less uneven surface of the thorax. 



3. 3Iyrmedonia Batesi, n. sp. Xigro-picea, nitidula, 

 elytris opacis, brunneis, apicem versus late infuscatis, 

 antennarum basi pedibusque pallidis ; prothorace sub- 

 quadrato, ina?quali, fortiter punctato ; elytris dense sub- 

 tiliter scabrosis ; abdominc supra loevigato, subtus crebre 

 subtiliter punctulato. Long. 4 lin. 



Antennse moderately long and slender, pitchy, paler at 

 the base ; ord joint twice as long as the 2nd ; 4th shorter 

 than the 3rd, twice as long as the 5tli ; 5 — 10 each a 

 little shorter and a little broader than the preceding one, 

 5th about as long as broad, 10th with the breadth greater 

 than the length ; lltli pointed, quite twice as long as the 

 10th. Head lilack and shining; front punctured on each 

 side, smooth in the middle. Thorax black, its breadth 

 one and a third times its length, scarcely narrowed behind ; 

 the base rounded; the posterior angles extremely obtuse, 

 the anterior rounded and deflexed ; its upper surface 

 strongly punctured and imeven, with an impression in 

 front of the scutellum, and with an indistinct longitudinal 

 channel, and a large ill-defined impression on each side, 

 reaching from the posterior angles nearly to the front. 

 Elytra about as long as the thorax, reddish, but all the 

 hind part smoky black, densely and finely scabrous, punc- 

 tate, more strongly so near the suture behind. Hind body 

 pitchy, with the margins of the segments paler, narrowed 

 behind, and with the basal segment a little constricted, 

 smooth, shining and im]Mmctatc above, finely and closely 

 punctured below ; the side margins of the segments much 



