168 



In this Group I have made little or no use of the com- 

 parative length, inter se, of the antenna! joints, having not 

 found sufficient variation in that respect to call for special 

 remark, and in not a few species the antennal joints of the 

 stipes are very short, and are difficult to examine without 

 dissection. 



External tridentation of the front tibiae is so nearly a, 

 generic character in Heteronyx that I have not burdened my 

 descriptions with a statement of the number of external 

 teeth on the front tibiae where that number is three. 



The number of names of previously-described species 

 clearly attributable (through either definiteness of description 

 or my inspection of the type) to this Group is 20. One of 

 these (II. pellucidus, Burm.) I have not been able to recog- 

 nize among the Ileteronyces known to me : it ought to be 

 easily identified, as will appear on reference to my note con- 

 cerning it (vide infra). Another of them (H. subvittatus, 

 Macl., also noted below) is a synonym. I describe 14 new 

 sped, as in the following pages, bringing the number confidently 

 attributable to the Group up to 33, one of them being omitted 

 from the tabulation for the reason stated above. Besides 

 these 33 there are 9 names of Heteronyces which (judged by 

 the descriptions) probably appertain to either this or the next 

 Group, but cannot be placed definitely without inspection 

 of the types — presumably in Europe — in either Group, because 

 the structure of the claws is not mentioned in the descriptions. 

 It is quite likely that I may redescribe some of these, but as 

 I have not access to the types I must run that risk. They 

 will be enumerated in the supplement. 



The following table indicates distinctive characters of the 

 species known to me in this Group, below which will be- 

 founcl notes on some of the previously-described species, and. 

 then descriptions of the new species : — 



A. Flabellum of antennae testaceous or 

 brightly ferruginous. 

 B. Hind coxa? about same length as 

 metasternum covering (or all but) 

 1st ventral segment. 

 C. Middle lobe of trilobed outline not 

 more than half a lateral lobe. 

 D. Hind claws strongly bifid, apicn] 

 process not or scarcely longer 

 than hinder process. 

 E. Elytral punctures very close 

 (20 from suture scarcely pass- 

 ing middle) sollicitus, Blackb. 



EE. Elytral punctures not very 

 close (20 from suture passing 

 middle strongly). 



