262 DTNASTIX,!:. 



Genus XYLOTRUPES. 



Xylotrupes, Hope, Coleopten'st's Manual, i. 1837, p. 19; Bwm., 

 TIandb, Entom. v, 1847, p. 2G4 ; Lacord., Gen. Coleopt., iii, 18o6, 

 p. 446. 



Type, Scarabceus gideon, L. 



linnge. Asia, Polynesia and Northern Australia. 



Ovate and moderately convex in shape, with rather slender legs. 

 Clypeus bidentate. ]\Jandibles bluntly bifid at the end and not 

 lobed or notched externally. Maxillae slender, thickly clothed 

 with silky hairs and armed internally with five acute teeth ; palpi 

 slender. Labium broad, subcircular, with the anterior part very 

 iiarrovv and not dilated ; palpi short. Prothorax acute at front 

 angles, obtuse at hind angles, with the base margined and 

 scarcely lobed. Presternum not produced behind. Propygidium 

 without stridulating ridges. Front tibiae strongly tridentate ; 

 middle and hind tibiae armed externally with strong spines and 

 digitated at the ends. Tarsi simple. 



6 • Head armed with a slender horn directed forward and 

 upward. Pronotum produced into a horn at the middle Legs 

 longer and more slender than those of the female, the teeth of the 

 front tibia longer and the two upper ones more transverse : front 

 tarsus rather longer and stouter than the others. Pygidium 

 very convex. Last abdominal segment very short and deeply 

 emarginate. 



2 • Clypeus bearing an indistinct transverse ridge, minutely 

 bituberculate at the middle. Pronotum entirely simple. Legs 

 rather short and stout and front tibiae broad. Pygidium flat. 

 Abdomen slightly convex beneath and last ventral segment rather 

 long. 



Only the typical species occurs in our region. 



242. Xylotrupes gideon. 



ScarabiTus pideon, L., Syst. Naf. 12th ed., i, (2) 1767, p. 541; 



Bnrm., Ilandb. Ent. v, 1847, p. 266 ; Oliv., Ent. i, (3) 1789, p. 14, 



pi. 2, tig. 102. 

 Scarabaeus phorbaiita, Oliv., Ent. i (3), 1789, p. 17, pi. 1, tifr. 6. 

 Scarabaeus oromoron, D7iir>/, III. j^''at. Hist. 1770, p. 81, pi. 36, 



fifr. 5 ; F., Si/st. Ent. i. 1775, p. 4. 

 Xylotrupes miiiszechi, Thorns., Arcana Kat. 18-')!), p. 18. 

 Xylotrupes austialicus. Thorns., Arcana Xat. 18o9, p. 18. 

 Xylotrupes socrates, Schaufuss, Hor. Ent. Soe. lioss., 1885, p. 192. 



Chestnut red or brown with the head, pronotum and legs 

 generally darker, the sternum and hind coxa? clothed \\ ith a fine 

 pubescence. 



J. The pronohnn has a dull siitiny gloss, except at the anterior 

 sloping part and the front part of the horn, and is very finely and 

 sparingly punctured. The scutellum is short and broad, and has a 



