GYMNUSA. 220 



rest ; tarsi li'ownisli. Punctuation not very close. L. 2^ 1. 

 Not common. Gf. variegata, Kies. 



DehiOj)Sis, 



Black, dull; antennae scarcely lighter at base; legs 

 blacldsh, knees and tarsi brownish. Punctuation and pu- 

 bescence close and fine ; posterior angles of thorax sharp 

 right angles, prominent ; elytra about one-third longer than 

 thorax. L. If 1. Not uncommon. D. crosa, Steph. 



TA CHYPOBinAB. 



A, Antennae with ten joints ; tarsi with four jomts. 

 Third joint of maxillary palpi not much longer, but 



broader than second, fourth less than half as long as third, 

 very narrow and pointed ; ligula truncate at apex, with a 

 small process in the middle, bearing a bristle at each ante- 

 rior angle ; labial palpi three-jointed, the first joint small, 

 second ovate, third thin. First tarsal joint elongate, next 

 three very small. Hyjoocijptus, Mann. 



B. Antennae with eleven joints ; tarsi with five joints. 



a, Ligula with a broad process in front, excised in 



middle. 

 Maxillary palpi elongate, third joint shorter than second 

 and fourth, latter gradually pointed, ending in a mem- 

 branous tip; labial palpi three-jointed, first joint large, 

 dilated at base, third slender, somewhat narrowed at base ; 

 antennae hairy ; first joint of hinder tarsi elongate. 



T I'ichophjja, Mann. 



h, Ligula simple. 



I. Elytra confusedly punctured or scratched. 



1, Abdomen not bordered. 



Third joint of maxillary palpi longer than second and 

 fourth, latter much narrower than third, gradually bluntly 

 pointed ; ligula with a deep triangular excision in middle ; 

 labial palpi With each joint narrower than preceding one ; 

 joints of tarsi gradually shorter. Conurus, Steph. 



2, Abdomen bordered. 



A A, Tibiae but little longer than tarsi. 



