Classification of the Coleopterous family Dynastidm. 331 



and the posterior ones rounded.. It is smooth in the 

 middle but there are large scattered punctures at the sides. 

 The scutellum bears a few small punctures, sometimes 

 forming an angulate line. The elytra are closely punctured, 

 the punctures forming four pairs of lines upon each and a 

 single line bordering the suture, and the intervals are 

 closely and irregularly punctured. The propygidium is 

 gently produced in the middle and the whole median part 

 covered with fine but broken stria3. Tlie pygidium is 

 densely punctured, and the punctures, at least at the sides, 

 tend to coalesce transversely. 



^ . The cephalic horn is short and nearly straight. 

 The anterior half of tlie pro thorax is scooped out and 

 divided by two smooth oblique carinas into three areas 

 which are coarsely rugose. The elevated dorsal part ends 

 abruptly in front and is sometimes slightly produced, but 

 it never extends nearly as far as the front margin. 



^. There is a rudimentary excavation at the front 

 margin of theprothorax and two slight tubercles behind it. 

 Of the two species of Styjwtri'.jjcs placed first in the 

 genus by its originator, one was described fi'om a fragment 

 and has since remained unknown, and of the second (S. 

 IJndyvnon), although described as long ago as 1789, the 

 habitat remains yet unknown. The specimen from 

 Kirby's collection (and now in the British IMuseum) re- 

 ferred to by Burmeister appears to be the actual type of 

 Olivier. 



Yet another species {S. Candczei, Voll.) which has no 

 affinity with the others has been added to this genus. 

 It is a form whose nearest ally is undoubtedly the peculiar 

 genus Oryctodcms. With this it shares the elongate rect- 

 angular form, the broad transverse clypeus, produced in 

 the male, the dilated rnentum and the thickened front 

 tarsi of the male. It differs in its strongly sculptured sur- 

 face, the digitated hind tibia? and the peculiar armature, 

 etc., and I propose to call it 



Ceratoryctoderus, n. gen. 



Both sexes of Vollenhoven's species have been well 

 figured by him and no congener is so far known. 



Fairmaire appears to have strangely confused the genera 

 Iletcronychvs and riiileurns. While placing in the latter 

 genus the three Kashmir species which I have already 

 lemoved from it, he transferred Philetivus chinensis and 



