Staphylinidce of Japan. 21 



siderably longer tlian the tliorax, black Avith the extremity 

 narrowly ])ale ; they are moderately strongly, but not 

 closely punctured. Hind body rather strongly and not 

 densely ]iunctured. Legs yellowish, the tibiae pitchy. 

 Abundant in refuse. 



liiENTis, nov. gen. (juxta Astrapoium locandus). 



(ienis baud niarginatis. 

 Thorace minus orbiculato. 

 Antennis rectis, crassinsculis. 



Palpis maxillaribus articulo ultimo oblongo, labialibus 

 articulo vdtimo leviter securiformi. 

 Tarsis anterioribus leviter dilatatis. 



The anomalous insect for which this genus is founded 

 is about the size and has somewhat the appearance of 

 Philoutlins cribratus. Labrum bilobed. Mandibles short, 

 stout at the base, curved, slender and pointed at the ex- 

 tremity, with a tooth near the base. Palpi short and 

 stout, the last joint of the maxillary longer than the pre- 

 ceding, cylindric ; labial palpi with the 1st and 2nd joints 

 short and but little longer than broad, last much larger, 

 hatchet-sha[)ed. Gena? iramarginate. Thorax with the upper 

 maiginal line very distinct, and not dcflexed at the front 

 angles, at the sides beneath with a rather large parchment- 

 like stigmatic membrane. The anterior and middle coxiB 

 large, the latter contiguous. The front tarsi only mode- 

 rately dilated ; the front tibije strongly spined. 



I have seen but a single male specimen of this interest- 

 ing insect. 



43. Rientis jiarviceps. Nigerrimus, antennis pedi- 

 busque piceis, capite thoraceque pernitidis, obsolete punc- 

 tulatis ; elytris abdomineque fortiter punctatis. Long. 

 %\ lin. 



Mas, abdomine segmento 7" ventrali margine posteriore 

 leviter emarginato. 



Fem. latet. 



liather longer but not broader than Astropceus ulmi. 

 AntenniB pitchy, stout, much shorter than head and 

 thorax ; 3rd joint longer than 2nd ; joints 6 — 10 each a 

 little broader than its predecessor; the 10th not quite so 

 long as broad: 11th joint longer than 10th, sinuate at 

 the extremity. Head small, not two-thirds the Avidth of 

 the tliorax at the base, the eyes only moderately large; it 



