DR. F. LEUTHNER ON THE ODONTOLABIM, 439 



sculptured ; canthus broad, as in 0. dalmani ; prothorax strongly convex and shining, 

 the sides dull ; upper surface extremely finely punctured ; sides of the prothorax 

 nearly trispinose, the front angles strongly developed, as in 0. dalmani ( ? ) ; pro- 

 sternal process rounded, spatulate ; mesosternal process more strongly developed than 

 in 0. bellicosus or 0. dalmani; front tibiae long, narrow, with four spines above the 

 terminal fork ; hind legs veiy long, especially the tibiiB. 



One specimen in the British Museum. 



Habitat. Island of Nias (west of Sumatra). 



Ur. Kaup described this species in 1S6S from two males from Nias. One of these 

 he gave to Major Parry, who regarded it as a large variety of 0. bellicosus with fully 

 developed mandibles', a view in which Kaup himself concurred when he subsequently 

 visited England. When I examined Kaup's type in Major Parry's collection in the 

 winter of 1SS2 I found that this telodont male agreed better with 0. siva and 0. dal- 

 mani in the shape of the head and mandibles than with 0. bellicosus. I was confirmed 

 in this opinion by a series of three males and one female which the British Museum 

 received from Nias with two male specimens of 0. incequalis ; and which Mr. C. O. 

 Waterhouse kindly permitted me to examine. The mandibles of the three telodont 

 specimens are exactly similar. The configuration of the prothorax and tiie unusually 

 strongly developed pro- and mesosternal processes are equally coustaut. 



4. O0ONTOLABIS DALMANI, Hope. (Plate LXXXVJI. figs. 4-6, 6 ; fig. 7, ? .) 

 cJ . Lucanus dalmaniii, Hope, Cat. Luc. Col. p. 17. Tenasserim. 

 Anoplocnemus dalmaniii, Thorns. Ann. Soc. Ent. France (4) ii. p. 394. 

 Aiioplocnemus pubescens, Blanch. MS. 

 Odontolabis dalmani, Parry, Trans. Ent. Soc. Loud. (3) ii. p. 76; Cat. Luc. Col. ed. 3, p. 14. 



Male. Very like that of the preceding species {0. gracilis), but smaller. Head, 

 prothorax, elytra, and sometimes the legs clothed with tine brown hairs ; under-surface 

 of the body smooth, or only very slightly hairy ; head quadrate, and rather flattened ; 

 front edge strongly and semicircularly emarginate, the sides straight; canthus 

 narrow; spine behind the eyes projecting slightly forwards ; prothorax trispinose on 

 the sides (twice deeply emarginate) ; under-surface of prothorax with the outer margin 



' Trans. Eut. Soc. Lond. 1870, p. 57. 



