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XXXII. Descriptions of some new Exotic Species of Luca- 

 nidffi. By J. O. Westwood, Esq., M.A., F.L.S., &c. 



[Read 7th Oct. 1861.] 



The following descriptions may be considered as supplemental 

 to the different memoirs which I have from time to time pub- 

 lished in these Transactions on various exotic species o^ Lucanidce 

 (Trans. Ent. Soc, N. S., iii. 197, &c.}. The species here de- 

 scribed are of small size, but they are not the less interesting, on 

 account of the peculiarities of structure which they respectively 

 exhibit, and which in several of the species are quite unique in 

 respect to the characters of this family. To these species 1 have 

 added figures of both sexes of a very interesting species, Homo- 

 derus Mellyi, from tropical Africa, which has been described by 

 Major Parry. (See Journal of Proceedings of the Society for 

 December, 1862.) 



Ryssonotusi jugularis, Westw. (Plate XIV. fig. 1.) 

 R. niger, capite et ^ronoto nitidis, hoc et elytris purpureo- 

 cupreis, pronoto mediocri angulis posticis emarginatis, elytris 

 dilatatis, capitis lateribus ante oculos productis et truncatis, 

 lobo jugulari deflexo, mento trigono. $ ? 

 Long. Corp. cum mand. lin. 10; lat. pronoti lin. 4|^; lat. elytr. 

 lin. 5f 



Habitat Melbourne in Australia. 

 In Mus. Bakewell et Howitt. 



This species is at once distinguished by its metallic hue, which, 

 together with its general form, gives it somewhat the appearance 

 of a female of the genus Chiasognathus, to which indeed it seems 

 to be somewhat allied. 



It is black, with the head and prothorax glossy ; the elytra are 

 almost opake, except the sutural margin, which is polished ; the 

 prothorax and elytra have a purplish coppery tint, varying on tlie 

 disc of the elytra to chesnut; the sides of the prothorax and the 

 suture of the elytra are slightly aeneous. The head is small, 

 rugose and very irregular on the crown; in front of each eye is an 

 elevated tubercle, and there are two others close together in the 

 middle ; towards the front margin the posterior lateral angles of 

 the head are extended outwards beyond the eyes and are truncated. 



