438 DK. F. LEUTHXEE ON THE ODONTOLABINI. 



forgotten, and were subsequently redescribed under the names of 0. nigritus and 

 0. (jOuheHi. 



Hope's type in the Oxford Museum was said to come from Java (Cat. Luc. Col. p. 16), 

 but this contradicts p. 5, where Silhet (Khasia Hills) is correctly given as the locality, 

 as is proved by the label on the specimen, which I was enabled to examine through 

 the kindness of Prof. Westwood. The same error is repeated in the registers of the 

 British Museum, as well as in the Leyden Museum, which latter received a specimen 

 from Hope himself As the female of 0. sim is very difficult to distinguish from that 

 of 0. helUcosns, Cast., the females are much more frequently mixed in collections than 

 the males. A recent consignment from Java, which I lately examined in the Leyden 

 Museum, contained only forms of the latter species, which are easily distinguishable in 

 the male sex. 



The range of 0. siva extends from North India (Silhet) across South China to 

 Formosa. Li the last locality it varies slightly from continental examples in both 

 sexes, but so slightly that Messrs. Parry and Bates have been unwilling to treat the 

 Formosan insect as a distinct species '. 



3. Odoxtolabis gracilis, Kaup. (Plate LXXXVII. figs. 1, 'i, c^ ; fig. 3, ? .) 



cJ . Odunloluhis gracilis, Kaup in Von Harold's Coleopt. Hefte, iv, p. 77 (1868). 

 Odontolabis bellicostts, var., Pariy, Trans. Ent. Soc. Lond. 1870, p. 57. 



Male. Intermediate between 0. siva and 0. belUcosus, but nearest allied to 0. daJ- 



mani, Hope. The whole body shining black, wHliont hairs ; head extremely finely 



punctured, quadrangular, the sides straight, spine behind the eyes directed forwards ; 



canthus narrow ; prothorax trispinose as in 0. bellicosus, the middle spine most 



prominent ; outer margins of prothorax beneath coarsely wrinkled ; prosternal process 



very strongly developed (figs. ln,2h); mesosternal process similar, projecting forwards, 



and stronger than in 0. hellicosHs or 0. dahnani, but similar to 0. ceJehensis; front 



tibite with two or three spines above the terminal fork ; all the legs with distinct rows 



of punctures. 



Mandibles. 



1. Forma telodonfa. — Mandibles long, sti'aight, rounded, flattened at the base and 

 tip. Tip curved inwards with five small teeth ; base with two (fig. 1). 



Two specimens in the British Museum, and one in Major Parry's collection. 



2. Forma amjjJiiodonta. — Mandibles rather longer than the head, with five small 

 teeth at the tip, and two or three at the base (fig. 2). 



One specimen in the British Museum. 



3. Forma priodonta. — At present unknown. 



Female. Shining black like those of 0. bellicosus and 0. siva; head broad, strongly 

 ' Compare Bates, Proc. Zool. Soe. 1800, p. 34s. 



