Hi 



Such are the genera which, according to niy 

 views, belonging to Opatridae ; I am not aware that 

 th echaracters of Sclerum of De Jean, are yet pub- 

 lished. I change the termination to on, as being 

 more correct. The following short generic cha- 

 racters will probably suffice to denote a form allied 

 to Opatrum, which appears only to occur in tropical 

 Africa and Asia, 



Scleron, Hope. 



" Corpus elongatum, elytris thorace duplo longi- 

 oribus et latidudine aequalibus. Caput rugosum, cly- 

 peo fisso, antennis ultimis articulis sensim incrassatis. 

 Thorax rugosus. Tibiae anticae dilatato-trigonae." 

 About ten species have fallen under my notice ; 

 two inhabit Africa, and the rest are from the East 

 Indies.* 



Trichoton, Hope. 



Corpus nitiduliforme, ovatum, convexum, postice 

 subacuminatum, supra et infra pilosum. Antennas 

 moniliformes, quatuor ultimis articulis extrorsum 

 crassioribus, subaequalibus. Femora parum incras- 

 sata tibiis quatuor anticis arcuatis postice dilatatis, 

 tibiis posticis rectis, in reliquis Opatro convenit 

 Habitat in America Meridionali. 



The insect above-described, is the only Opatrum 

 belonging to the New World that has fallen under 

 my notice. From the above short description it 

 will be seen at once, that it cannot be ranged with 



* Besides the general works containing the Heteromea, consult 

 Opatra Collect. Stevenianae, in Mem. Soc, Imp. Mosc, volume 7. 



