(Page 4) 

 ( Phllonthus et al.) or incurved, or toothed in fore-margin ( Stilicus, 

 Euaesthetus et al.). - Cheek-bones ( mandibulae / are as a rule robust, 

 more or less protruding, most often sickle-shaped, and folded crosswise 

 when mouth is closed, on inner side often armed with robust teeth, - 

 The jaws ( maxillae ) (Fi^. 2) are of a more or less horny substance; their 

 inner lobe, mastication-lobe ( lobus interior ) is on inner side haired or 

 finely toothed, the outer, palpal lobe ( lobus exterior ) at tip densely 

 haired. The jaw-feelers or jaw-palpi ( palpus maxillares) consists of 

 4 joints, of which the first usually is short, the second and third lon- 

 ger, most often thickened toward tip; the fourth, distal joint, as a rule 

 is somewhat thinner than the next-last, in many genera especially small 

 and spiculiform or subuliform. In the genus Aleochara the extreme tip of 

 the fourth Joint is setoff, so that it forms a very small fifth joint, 

 a uniqut character, which is useful in the ^jeneric key. - on the lower 

 lip ( labium ) (Fig. 3), which closes the mouth beneath, the chin ( mentum) 

 is most often broadly trapeziform with straight or incurved, more rarely 

 deeply divided fore-margin (as in Autalia Fig. 90), occasionally with den- 

 tiform corner-lobes ( Myllaena ; or with a tooth in middle (Stenus). That 

 part of the lower lip which bears the palpi and tongue is as a rule rather 

 short, only in Stenus of unusual length, but is here drawn back into a 

 sheath, of and with which it by pressure or perhaps also voluntarily can 



be thrust far forward (see u. Stenus) . The tongue ( ligula ^ , with which 



-- — (Paige 5) 



the bitongues ( paraglossae ) are connate, is in connection whith this of 



very different shape, and thereby together with other mouth-parts, in dif- 



-6- 



