230 BRACIIELYTRA — TACIIYrOMDAE. 



a a, Mesosternum not ridged. 



A a. Fourth joint of hinder tarsi nnich 

 shorter than third. 



Second and third joints of maxillary palpi about equal 

 in length ; fourth joint about half as long as and nnich 

 narrower than third, pointed ; ligula rather deeply excised 

 in middle, paraglossae distinct and equal in lengtli to 

 ligula ; labial palpi with each joint narrower than pre- 

 ceding one. Tachijiiorus, Gr. 



B h. Fourth joint of hinder tarsi not much 

 shorter than third. 



Third joint of maxillary palpi more than twice as long as 

 second, fourth joint scarcely narrower than and one-third 

 as long as third, gradually bluntly pointed ; other mouth 

 parts as in Tachyporus. Lamprimis, Heer. 



b h, Mesosternum ridged. 



A a. Antennae hairy. 



Third joint of maxillary palpi rather broader and shoiter 

 than second, fourtli joint ratlier longer and at the l)ase 

 scarcely narrower than third, pointed ; ligula slightly 

 excised in middle, paraglossae shorter than ligula ; lal )ial 

 palpi with each joint narrower than preceding one ; joints 

 of hinder tarsi gradually shorter, first very elongate. 



Rahrocerus, Er. 

 2? b. Antennae simple. 



Third joint of maxillary palpi about half as long as 

 second and fourth, latter narrower than third and slightly 

 attenuated toward apex ; ligula as in Hahroccrm ; third 

 joint of lal)ial palpi narrower and almost double as long as 

 second ; joints of hinder tarsi gradually shorter, first very 

 elongate. Second abdominal segment simjjle. Cilca, Duv, 



B B, Tibiae half as long again as tarsi. 



Maxillary palpi rather elongate, joints equal in breadth, 

 third joint rather shorter than second and fourth, latter 

 Ijluntly rounded at apex; ligula with an excision in 

 middles, ])araglossae al)out as long as ligula ; joints of labial 

 pali)i equal in breadth, second rather shorter than first and 

 third. Second ventral segment of abdomen raised in 

 middle. Tachinus, Gr. 



