SCYDMAENUS. 855 



1, Basal transverse impression on thorax witli two 

 dej)ressions on each side. 



Iieil-hrown. Elytra elongate oval, punctured, with a 

 dee]) depression on base of each. L. % 1. Not common. 



S. Sparshalli, Den. 



2, Basal transverse impression on thorax with only 

 one depression on each side. 



Pitch-broAvn, shiny ; antennae and legs red-yellow. 

 Tliorax impunctate ; pubescence on elytra appearing in 

 certain lights to be placed almost in rows. Allied to aS'. 

 Sparshalli but longer and rather more convex ; thorax 

 ratlier longer, with pubescence very scanty, transverse basal 

 impression feebler ; elytra longer, narrower and more 

 gradually narrowed toward apex, less distinctly punctured ; 

 eyes smaller in proportion and antennae stouter at apex, 

 the last three joints being considerably, the eiglith (and in 

 a lesser degree the seventh) distinctly thickened. L. | — 

 I" 1. Rare. >S'. praetcritus, Eye. 



J?. Head divided from thorax by a short neck ; meso- 

 sternum strongly ridged. 



a. Antennae with four distinctly larger apical joints ; 

 length I line. 



I, Elytra broadest behind middle ; male with eighth 

 and ninth joints of antennae toothed on inner-side 

 at apex. 



Pitch-black ; antennae rust-red ; legs pitch-l)rown. 

 Thorax pubescent, about as broad at base as in middle, with 

 two depressions before posterior margin ; elytra not punc- 

 tured, base with depressions. Not common. 



>S'. denticornis, Miill. 



IT. Elytra broadest in middle ; antennae of male 

 simple. 



1. Palpi entirely dark rust-red. 



Pitch-black ; antennae (except club), til)iae and tarsi 

 yellow-brown. Thorax puliescent, slightly narrower at 

 base than in middle, base with transverse impression ; 

 elytra not punctured. Moderately common. 



S. hirticollis, 111. 



2. Palpi dark rust-red, with apex Ijrown. 



A A 2 



