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 A. The head ( caput . ) is more often porrect than bent downward, of;, 

 form most often rounded or rounded-off-transverse (broader than long); 

 rarely beak- or snout-like tapering ( Myllaena , Lrymnusa at al.). posteri- 

 orly often more or less neck-shaped constricted ( Fala;;ria . Staphylinus . 

 Omalium and many others) otherwise without constriction imbedded in the 

 pronotum. Of its individual parts the eyes, antennae and mouth-parts ecB. 

 are especially observed. 



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a. The eyes are "compound eyes" and ordinarily are not strongly pro- 

 truding i in several genera they are however strongly protruding ( Gyrophae- 

 na . Stenus et al.). The eyes vary greatly in size; some are small or very 

 small (as in Homalota species 6f subg. leostiba . Amlscha et al.), others 

 80 large that they fill the entire sides of the head (^uedl_as, Stenus) . 

 Ordinarily the size lies between the extreme points, and are then called 

 normal. In the group Omaliinl and genus Phloebium besides the ordinary 

 compound eyes on each side of the head, very small point-eyes occur (ocelli, 

 2-1) on the vertex. 



b. The feelers ( antennae) are either filiform or monlliform, i. e. 

 all over of same thickness and most often rather slender, or they are - 

 and most frequent - more or less smoothly thickened distally, oocaBionally 

 somewhat club-formed; as a rule they are straight, rarely after a long 

 first Joint (the scape) geniculate ( Cryptobium . Bledius et al.). 



As a rule they consist of 11 joints, only exceptlonataly of 10 (Oli^ota 

 and Hypocyptua) or 9 ( Micropeplue) . In Micropeplus, which in several re- 



