502 CLASS INSECTA. 



middle. Its separation from the abdomen is also more 

 marked than in the lucani. The two posterior feet are more 

 thrown behind. The antenna are less curved.* 



The lucanidas of our second section have antennae simply 

 arched, or but little bent elbow-like, and hairy ; a labrum 

 always uncovered, crustaceous, and transverse; mandibles 

 strong and very much denticulated ; but without any re- 

 markable sexual disproportions; jaws entirely corneous, with 

 two strong teeth at the least ; a tongue equally corneous or 

 very hard, situated in an upper emargination of the chin, 

 and terminated by three points ; the abdomen supported on 

 a pedicle, presenting the scutellum above, and separated 

 from the corslet by a very sensible interval. These insects 

 compose the genus 



Passalus, Fabr., 



Which Mr. Macleay confines to the species in which the 

 knob of the antennae has bvit three articulations, whose la- 

 brum forms a transverse square, and whose jaws have three 

 strong teeth at the end, and two at the internal side, at the 

 place of the internal lobe- 



The species in which the knob has five articulations, in 

 which the labrum is very short, and whose jaws have but 

 two teeth, one terminal and the other internal, form his 

 o-enus Paxillus. 



Finally, he unites to the preceding, in his family of passa- 

 lidae, the G. Chiron^ which we have placed in the tribe of 

 coprophagi.-f- 



These insects are foreign to Europe, and, as far as it ap- 

 pears, to Africa. It is in the eastern countries of Asia, and 



* Sinodendron cormitum, Fab. Don. Ins. of New Holl. t. 1.4; Si/ndcsu& 

 cornulus, Macl. Hor. Entoni. I. part I. p. 104. 

 f Hor. Entoni. I. p. los, et seq. 



