Lucanoid Goleoptera. 85 



distinct species were confounded by Mr. Hope under the 

 name of L. hulhosus. As regards Mr. Thomson^s Proso- 

 pocoilus crenicollis, there exists no doubt in my mind, 

 that, misled by the description given by Mr. Hope in his 

 Catalogue, and without consulting the figure anteriorly 

 published in the Linnean Transactions, and cited by Mr. 

 Hope, he erroneously considered the insect before him 

 as a nondescript, whereas it now proves to be identical 

 with L. hulhosus, Hope, of the Trans. Lin. Soc, and of 

 which I consider L. Spencii to be the var. max. ; the de- 

 scriptions of the several insects alluded to amply confirm 

 the opinion I have expressed. 



The synonymy will therefore stand thus: — 



Prosopocoilus Spencii. (PI. II. fig. 1.) 



Lucanus Spencii, ^ (var. max.) Hope, Tr. Linn. Soc. 

 xviii. 589. 



MacroguatJms Spencii, Hope, Cat. Luc. p. 6 and p. 19. 



Cladognathus Spencii, Parry, Cat. p. 37. 



Lucanus hulhosus, S (var. min.) Hope, Tr. Linn. Soc. 

 xviii. 589, pi. xl. fig. 2 (clypeo unituberculato) . 



Dorcus punctiger, $, Hope, Tr. Linn. Soc. xviii. 592. 



Prosopocoilus crenicollis, c? ? , Thomson, Cat. Luc. p. 418. 



Mr. Thomson suggests the possibility of the two insects 

 representing only a difierence in race, or hereditary or 

 local varieties of the same species, but I think that the 

 diversity exhibited in the clypeus, as well as in the dif- 

 ferent armature of the mandibles, and the more attenuate 

 form of the elytra so conspicuous in 0. hulhosiis, fully 

 warrant the conclusion, that C. hulhosus, Hope, Cat., and 

 G. Spencii, Hope, Tr. Linn. Soc. are distinct species. 



Prosopocoilus antilopus, Swed. 

 Cladognathus quadridens, Hope. 



Both the figure and description of the mandibles " ex- 

 sertee, capite vix longiores," show that the insect described 

 by Swederus (Act. Holm. 1787, p. 186, pi. viii. fig. 3) is the 

 var. minor of the species ; it is stated to have formed part 

 of the then celebrated Drury collection, dispersed, I be- 

 lieve, afterwards by public auction. Allusion was made in 



TRANS. ENT. SOC. 1870. — PART I. (MARCH.) H 



