68 LUCANTD^. 



5 (6) Shorter, the j)ron()tuin broad in 



front, narrow behind Jomlcri Hope, p. 09. 



G (5) Longer, the pronotuni not broad in 



front nor narrow behind //(/m'sec/ti Thorns., p. 71. 



20. Hexarthrius parryi. (Plate V, fig. ; Plate VI, fig. 3.) 



Hexctrthrius parryi Hope, Trans. Linn. Soc. Lond. xix, 1S43, p. 104, 

 pi. 10, fig. 2. 



Black, the male with a large yellow patch occu])ying the 

 posterior three-quarters of each elytron. Moderately elongate, 

 not very shining. The lateral angle of the prothorax very 

 sharp and the hind angles fairly well marked but not sharp. 

 The prosternum forms a moderately broad, rounded and rather 

 slojiing lobe behind. The fifth joint of the antenna strongly 

 produced. 



$. Entirely black, sometimes with a faint trace of browai 

 upon the hinder part of the elytra. The head is rather uneven, 

 coarsely and rugosety punctured, except in the middle of its 

 j)Osterior margin, where it is finely coriaceous. The lyronotum 

 is finely coriaceous, with coarse and close punctures at the 

 sides, becoming gradually finer and fewer towards the middle, 

 where they are absent. The front angles are rounded, the 

 lateral margins finely and irregularly serrate, and gently 

 curved to well be3"oncl the middle, where there is a very sharp 

 tooth, and then concave to the obtuse hind angle. The 

 scutellum bears a few punctures and tlie elytra are finely and 

 closely ^Junctured, the sides and apices rather opaque and 

 the remaining surface very feebty shining. The front tibia is 

 finely serrate laterally with short sharp teeth and a short 

 terminal fork, the middle tibia has a strong lateral spine and 

 the hind tibia a small one. 



3*. Black, with the elytra bright orange, their inner and 

 outer margins narrowly, and the anterior part very broadly, 

 black, the black border ver}^ sharply defined behind but rather 

 vaguely in front. The Jiead and mandibles are densely 

 granular, the head more or less swollen on each side. The 

 cl;yTP^l process is short, produced in the middle, where it 

 forms a thin compressed lamina with the tip sharply refiexed. 

 Tile sides of the head are sharply angular in front of the eyes 

 and rather feebly angulate behind them, where the iiead is 

 strongly contracted. The pronolum is short and broad, 

 densely gianular, rather coarsely al the sides and very finely 

 in the middle, where there is a fine median groove. The outer 

 margins ar(> j)r()(luced outwards as irregularly rounded lobes 

 in front, then gently bisiiuiate to far beliind the middle, 

 where there is a very sliarp s2)ine, and gently concave to the 

 obtuse but well-marked hind angle. The elytra are dull, 

 except upon the innei- posterior part, and the base and sides 



