244 BT^ACHELYTRA — STAPIIYLTNIDAE. 



Elongate. Yellowish; extreme vertex of head, rarely 

 the base of elytra, Ijase of abdominal segments, and breast 

 dark brown. Antennae long, first three joints lighter 

 disc of thorax impnnctate ; elytra with only one dorsal row 

 of punctures. Punctuation of abdomen coarser and more 

 diffuse than in M. splendidus, and thorax wider. Eather 

 connnon . M.lo ng ic orni s, Kr. 



STAPHYLINinAB, 



A. Lateral margin of thorax simple ; antennae inserted 

 under apex of side margin of foreliead. Quediides. 



JB. Thorax with a distinct upper and lower lateral margin. 



a. Antennae inserted within base of mandibles. 



Staphylinides. 



h. Antennae inserted before base of mandibles. 



Xantholinides. 



QUMniinES, 



A . Antennae elbowed. 



a. Last joint of labial palpi thick, half-ovate. 

 Mandibles with three teeth toward base. Third joint of 



maxillary palpi rather shorter and thicker at apex than 

 second, fourth large, double as long, narrowed from middle; 

 ligula rounded, entire, paragiossae scarcely longer than 

 ligula ; first joint of antennae as long as next four joints 

 to'gether. Thorax smootli, witli two punctures before middle 

 of disc. Acylojjhorus, Nordni. 



b. Last joint of labial palpi very large, hatchet-shaped. 



Mandibles with one tooth at base. Third joint of maxil- 

 lary palpi rather shorter and thicker at apex tlian second, 

 fourtli half as long again, bluntly pointed from middle ; 

 ligula rounded, entire, paragiossae distinctly longer than 

 ligula. Thorax smooth, with three punctures on each side 

 of disc before middle, and others at margins. 



Eiiryjjorus, Er. 



a. Antennae not elbowed. 



a, I'l'othoracic s])ii'acle conspicuous; second joint of 

 labial palpi tliickened. 



