Pselaphidce of Japan. 313 



Batrisus rugicollis, n. s. 



Angustulus, longius parum dense pubescens, rufescens, 

 elytris magis sanguineis ; capite thoraceque ubique 

 densissime fortiter punctatis, opacis ; elytris parcissime 

 punctulatis, plicula discoidali abbreviata ; abdomine 

 segmento basali sequentibus duobus aequali. Long. 

 2^ mm. 



Mas, fronte inter antennas producto, anterius de- 

 presso et acuminato, clypeo utrinque sub antennas 

 prominulo, in medio processu erecto ad apicem paulo 

 latiore ; trochanteribus intermediis spinosis. 



This species is readily recognised by the extremely 

 dense and coarse sculpture of the head and thorax. 

 Antennae similar in the two sexes ; 1st joint very stout, 

 simple ; 2nd stout, bead-like, about as long as broad ; 

 3 — 9 very little different from one another, each about 

 as long as broad ; 10th slightly broader ; 11th a little 

 broader, obliquely acuminate, rather longer than the 

 two preceding together. Head nearly flat, except for 

 an indistinct angular mark, terminated on each side 

 behind by a very obscure fovea. Thorax rather short, 

 a good deal dilated at the sides, the central channel 

 indistinct on account of the sculpture. Basal segment 

 with the side-piece marked off by a curved plica, rather 

 narrow. 



Four specimens ; Oyama, in Sagami, and Miyano- 

 shita, May, 1880. 



Batrisus ornatifrons, n. s. 



Longius, parum dense pubescens ; capite profunde 

 angulariter impresso, anterius fortiter punctato, vertice 

 medio subtiliter carinulato ; thorace minus fortiter 

 asperato-punctato, medio canaliculato, utrinque sub- 

 tiliter carinulato, lateribus longitudinaliter impressis ; 

 elytris parcissime punctulatis, plicula discoidali abbre- 

 viata ; abdomine segmento basali sequentibus duobus 

 sequali. Long. 2 mm. 



Mas, fronte inter antennas producto, anterius de- 

 presso et acuminato, clypeo utrinque sub antennas 

 prominulo, in medio processu erecto ad apicem minute 

 furcato ; trochanteribus intermediis spinosis. 



This species appears to be very closely allied to B. 

 rugicollis, but has greatly diminished sculpture of the 



