382 ox THE IXSECTS FROM NEW BRITAIN. 



Order Coleoptera. 



The collection of Coleoptera obtained by Dr Willey in New Britain numbers about 

 160 species. In 1883 Fairmaire published an essay on the Coleoptera of the New 

 Britain archipelago' iu which he enumerated 176 species. Since then but little has 

 been added. Upwards of one half of the species mentioned by Fairmaire are not 

 represented in Dr Willey 's collection ; moreover the majority of the species enumerated 

 by Fairmaire really came from Duke of York island. 



In the following remarks I have mentioned onlv such names as add to the 

 knowledge supplied by Fairmaire's paper. Many of the species procured by Dr Willey 

 are clearly undescribed, but I do not think it desirable to deal with the obscure 

 forms that are represented only by one or two specimens, or with others that cannot 

 for various reasons at present be satisfactorily elucidated. 



Dr Willey also procured a small collection of Coleoptera in Lifii. This is at 

 present being studied by M. Albert Fauvel of Caen, who is well acquainted ■ivith the 

 Coleoptera of New Caledonia. 



Fajiilt LUCANIDAE. 



Eurytrachelus intermedius Gestro, Ann. Mus. Genova, xvi., 1881, p. 317. 



Plate XXXV. Figs. 3 a, 3 6, 3 c, 3 rf. 



Dr Willey procured a good series of this rare stag-beetle in the neighbourhood 

 of Blanche Bay ; nine specimens are of the teleodont form (Plate XXXV. Fig. 3 a), two 

 of the mesodont form (Fig. 3 6), and two of the priodont (Fig. 3 c). There are also 

 four females (Fig. 3 d). The forms of the male, besides differing in the mandibles, 

 exhibit great variation in the sculpture. Gestro described the species from New Guinea, 

 and Dr Willey's examples differ a little from Gestro's figure ; chiefly in that the 

 mandibles are more slender and their teeth less largely developed. A specimen in 

 the British Museum, reputed to be from Duke of York island, quite agrees with the 

 New Britain specimens. E. intermedius is closely allied to E. ternatensis. The latter 

 species is recorded by Fairmaii-e from Duke of York island, but we may anticipate 

 that this record will prove erroneous : E. intermedius having been probably mistaken 

 for E. ternatensis. 



Family SCARABAEIDAE. 



Phaeochrous alternatus Fairm. (t. c. p. 5). Several specimens of this beetle were 

 taken from the stomach of Varanus indicus. It was not otherwise noticed. 



? Xylotrupes gideon L. Plate XXXV. Figs. 1, 2. 



Xylotrupes gideon is recorded from Duke of York island by Fairmaire, without 

 any remark as to its variation. The four specimens of a male Xylotrupes procured 

 by Dr Willey represent various grades of development of the horns of that sex, and 



' Ann. Soc. ent, Belgique, xxvn., 1883, Pt. II., pp. 1 — 58. 



