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XXI. Descriptions of new Coleoptera from Madagascar 

 belonging to the Melolonthida3. By Charles 0. 

 Waterhouse. 



[Read August 2nd, 1882.] 



The species described in this paper are mostly from 

 various collections recently received at the British 

 Museum from Madagascar. The genera of MelolontUdce 

 are somewhat unsatisfactory, and I have therefore re- 

 frained from proposing new genera, except in one case. 

 The species which I have described as Encya variegata 

 and E. crihrata are allied to Encya ornatipennis, Blan- 

 chard, and all these species depart from the definition of 

 the genus in having more than four lamellae to the club 

 of the antennae. E. ornatipennis, male, has the club 

 composed of five lamellae ; E. crihrata, male, six lamellae ; 

 and E. variegata, male, seven lamellae. The species 

 which I have described as Lepidiota pygidialis differs from 

 all the species of the genus in the acute prolongation of 

 the apex of the pygidium ; but, having regard to the 

 mixed group of species now included in the genus Lepi- 

 diota, I have not deemed it advisable to separate this 

 species generically, as that would be better done by any 

 one monographing the family. 



MELOLONTHIDiE. 

 EHIZOTROGIN^. 



Enaria, Er. 

 In Lacordaire's * Genera des Coleopteres ' the club of 

 the antenna is said to be three-jointed, but a note is 

 added to the effect that all the specimens examined were 

 females. The specimen described below as E. marginata 

 is a male, and of E. depressiuscida there are both sexes. 

 The males differ from the females in having the club of 

 the antenna composed of four leaflets, which arevery 

 distinctly longer than those of the female ; the 7th jomt, 



TRANS. ENT. SOC. 1882.— PART III. (SEPT.) 



