178 NEW SPECIES MELYRIDAE, CHRYSOMELIDAE AND TENEBRIONIDAE 



15. Surface lustre above cupreous throughout ; pubescence rather short, macu- 



lation less distinct; antennae rather slender basally, last three joints 



stouter and feebly incrassate 27. variegatus Casey 



. Surface lustre cupreous on head and pronotum, violaceous or darker on 

 elytra; pubescence longer, maculation distinct, antennae somewhat 

 stouter 28. incestus, n. sp. 



16. Surface lustre slightly brassy ; pubescence rather long, coarse and cinereous, 



except for a few dark maculae behind middle of the elytra, of which 

 four are arranged in a subapical transverse row 29. tritus Casey 



LUTEIPES GROUP. 



Antennal joints (male) from the third to the ninth distinctly elongate ; pub- 

 escence rather short and cinereous; median and subapical fasciae well 

 denned and moderately narrow ; legs entirely pale... v 30. giffardi, n. sp. 



Antennal joints not elongate; elytral pubescence unevenly distributed toward 



base 1 



1. Head and thorax noticeably small, distinctly narrower than the elytral base ; 



elytral dark fasciae more or less diffused; legs pale 31. parvicollis, n. sp. 



. Head larger, pronotum about as wide as the elytral base 2 



2. Pronotum longer, central area rather sparsely and distinctly punctate, in- 



tervals more or less smooth; fourth antennal joint obconico-triangular ; 



legs pale 32. luteipes Lee. 



. Pronotum shorter, transverse, densely indentato-punctate 3 



3. Albo-cinereous hairs of the elytra elongate-lanceolate and somewhat 



squamiform, very dense in a narrow transverse fascia at apical third; 



fourth antennal joint triangular; legs bright rufous 33. famelicus Casey 



. Cinereous hairs of the elytra slender as usual 4 



4. Legs piceous ; elytral pubescence unevenly distributed anterior to a moder- 



ately wide subapical dark fascia; fourth antennal joint obconical 



34. ornatulus Casey 



. Legs rufous ,. _ 5 



5. Smaller species (1.9 mm.); fourth antennal joint feebly triangular; basal 



joint pale; elytra with a dark wide median and a narrower subapical 

 fascia, and two rounded maculae on each toward base....3S. concurrens Casey 

 . Larger species (1.9-2.3 mm.) ; fourth antennal joint triangular (male), or 

 obconical (female) ; elytra with an even transverse subapical fascia, apex 

 with a few scattered dark hairs, and feeble trace of small brownish 

 maculae toward base _ 36. balteellus Casey 



TROCHANTERICUS GROUP. 



Pubescence coarse, cinereous, rather dense; form feebly elongate; median 

 elytral fasciae narrow, zig-zag or broken up ; pronotal central area closely 

 indentato-punctate. Antennae moderate in length, slightly compressed; 

 third joint cylindrical; fourth obconico-triangular; sixth, seventh and 

 eighth subequal in size and length; fifth serrate as usual in the 

 male ^ 37. tro chant ericus, n. sp. 



LIEBECKI GROUP. 



Antennae long and rather stout; joints three, four and five elongate; fourth 

 quite triangular; third rather slender, slightly more than twice as long 

 as wide (male) 38. liebecki, n. sp. 



