398 MEMOIRS ON THE COLEOPTERA 



though not prominent eyes, the labrum large; prothorax widest 

 very near the base, not much narrowed thence to the apex; elytra 

 and abdomen with close-set punctures; hind tarsi with the basal 

 joint long, the fifth shorter than the first. [Type Q. moloclrinns 

 Grav.] Quedius 



Body small in size, more fusiform; head rounded, the eyes large but only 

 moderately prominent, the labrum very short; prothorax orbicular; 

 elytra and abdomen punctured throughout; hind tarsi smaller, the 

 first joint relatively much shorter, not as long as the fifth. [Type 

 Q. debilis Horn] Quediellus 



7 Front with two discal impressions, which are generally punctiform and 

 arranged transversely; head orbicular, the eyes more or less well 

 developed but seldom distinctly prominent; nuchal constriction 

 feeble; prothorax orbicular; elytra variably punctate, generally 

 almost evenly but sometimes having very few punctures; scutellum 

 always smooth ; abdomen rather closely punctured ; hind tarsi normal, 

 the first and last joints elongate and subequal. [Type Q. capucinus 

 Grav.] Distichalius 



Front without two discal punctures 8 



8 Head oval or oblong-oval; integuments polished as usual; pronotum 

 never explanate laterally 9 



Head quadrate; eyes moderate but prominent; pronotum subexplanate 

 at the sides; integuments shining IO 



Head triangular, widest basally; eyes small, not at all prominent; pro- 

 notum subexplanate at the sides; integuments more or less opacu- 

 late II 



9 Body moderate to rather large in size; eyes as in Distichalius, the 

 nuchal constriction similarly feeble, the prothorax, elytra and ab- 

 domen nearly similar, except that the punctuation of the latter 

 two is always regular and more or less close-set; infra-ocular carina 

 strong; hind tarsi regular, the first and last joints much elongated; 

 scutellum smooth or punctate. [Type Staph. fulgidus Fabr.] 



Microsaurus 



Body small in size, more slender, feebly fusoid; eyes generally very large 

 and prominent; nuchal constriction usually rather deep; elytral 

 sculpture varying as in Distichalius, the abdominal punctures 

 regular to irregular; hind tarsi as in the preceding, the infra-ocular 

 carina much feebler. [Type Q. fidvicollis Steph. (hyperboreus Er.)] 



Raphirus 



10 Color always testaceous throughout; habits frequently subcavernico- 

 lous; antennae thick but not fusiform; elytra and abdomen finely, 

 closely punctate; hind tarsi rather thick, feebly tapering, the joints 

 having the usual proportions; body moderately large in size, sub- 

 parallel; infra-ocular carina very fine but entire. [Type Q. spel(?ns 

 Horn] Quediochrus 



ii Color always deep black throughout; habits probably secluded as in 

 the preceding; antennae very thick and strongly fusiform; elytra and 

 abdomen very finely and densely punctured throughout; hind tarsi 

 thick and gradually tapering, nearly as in the preceding but still 



