Lucanoid Coleoptera. 63 



j/Egus Formosce. 

 Bates, Proc. Zool. Soc. 1866, p. 347. 



Several specimens^ with various gradations of form, 

 were received by Mr. Bates, and having had the oppor- 

 tunity of examining a numerous series, I am able to 

 coincide with the author in his view as to their close 

 affinity to ^gus Icevicollis, Saunders (from China), of 

 which species JE. Formosce may perhaps be considered 

 only as a geographical variety. The punctuation, how- 

 ever, as exhibited both above and below in the female, 

 appears to be considerably coarser and stronger in ^. 

 Formosce than in JE. Icevicollis. The var. max. (^ ex- 

 hibits a nodose tubercle on the head adjacent to the base 

 of each mandible, which in the var. med. is but rudimen- 

 tary, and in specimens of the var. min. is entirely wanting ; 

 the same will, I have no doubt, prove to be the case with 

 ^. Icevicollis, but I am not acquainted with the var. 

 max. of the latter species. 



Platycerus oregonensis, Westw. 



This insect described by Professor Westwood (Tr. Ent. 

 Soc. iv. 277) and alluded to as being probably identical 

 with P. qiiercus (a well-known species from North Ame- 

 rica) , has been located as such by Gemminger and Von 

 Harold. In my former Catalogue it was noticed as being a 

 doubtful species. Dr. Leconte in his " List of Coleoptera 

 of North America" (published 1863-1866) doesnotappear 

 to consider P. oregonensis as a distinct species, but refers 

 it (with doubt, however) to Platycerus depressus ; in this 

 however, I do not feel disposed to agree, considering it, 

 from description, to be more closely allied to P. quercus. 



8clerocjnatlms S^inolce, Solier. 



In this case, Gemminger and Von Harold appear some- 

 what inconsiderately to have changed the generic name 

 8clerostomus, Burmeister, to Sclerognathus (Burm. MS.), 

 Hope, Cat. Luc. 1845. Dr. Burmeister in establishing the 

 genus Sclerostomus in his " Handbuch der Entomologie," 

 1847, p. 423, states that at the period he proposed the 

 name of Sclerognathus it had not been employed, but that 

 in the interim it had been used by Mons. Valenciennes 

 to designate a group of fishes. 



