462 Dr. D. Sharp on 



Megacronus optatus, n. sp. 



Niger, nitidus ; elytris sordide riifis, antennarum basi, palpis pedi- 

 busque testaceis ; abdomine parce punctato, segmentorum mar- 

 ginibus rufo-cingulatis. 



Long. 5-1. millim. 



Antennse rather slender, thickened externally, four basal 

 joints yellow, fifth joint as long as broad, penultimate joints 

 slightly transverse, hind margin picescent. Elytra slightly 

 longer than the thorax, the dorsal series consisting of four 

 or five subobsolete punctures. Hind body sparingly punc- 

 tate, distinctly though scantily pubescent. 



This is readily distinguished from M. striatus by the com- 

 paratively slender antennae and the red immaculate elytra. 

 It is more like our European B. rugipennis, from which it 

 is distinguished by the colour of the head and thorax and 

 the absence of any rugSB on the elytra. It is a member of 

 the genus or subgenus Bryoporus, Rey, which, however, is 

 scarcely sufficiently distinct from Megacronus as defined by 

 the French systematist. 



Kigaj unique. 



Megacronus gracilis J n. sp. 



Angustulus, rufus, capite nigricante, antennarum basi, palpis pedi- 



busque testaceis ; elytris regiilariter multiseriatini punctatis. 

 Long. 5 millim. 



This also from the structure of its palpi must be assigned 

 to the subgenus Bryoporus ; but it is very distinct by the 

 regular coarse punctuation of the elytra, which is arranged 

 in seven or eight series, somewhat as it is in the Central- 

 American species of the genus. The antennae are short, 

 thickened externally, with the penultimate joints rather 

 strongly transverse ; the middle joints are infuscate. The 

 head is small and narrow, black. The thorax is slightly 

 transverse, and is remarkable from possessing along tlie 

 middle three pairs of setigerous punctures, one near the front, 

 one near the base, and one behind the middle ; there are also 

 a few lateral punctures irregularly placed, and in addition a 

 scanty very minute punctuation. The elongate and narrow 

 elytra are much longer than the thorax. The hind body is 

 elongate and slender, rather closely punctate. 



Otsu, Kobe, Fukushima, in June and July ; one example 

 from each locality. 



