DR. r. LEUTHNEE ON THE ODONTOLABINI. 



413 



Notwithstanding the conspicuous differences in size and colour of 0. delesserti, this 

 South-Indian species differs little from the former species in structure. The mandibles 

 of the telodont form ai-e larger than in 0. cuvera, and there are two rather widely 

 separated spines at the base (PI. XCII. figs. 1, 1 1). I know of no mesodont form parallel 

 to that of 0. cuvera ; fig. 2 is more like 0. mouJioti (PI. XCI. fig. 5) from 8iam. The 

 greatest development of the mandibles is found in 0. burmeistcri (PI. XCII. fig. 5 a, h), 

 which, like the telodont form of 0. delesserti, has two basal teeth. The central branch, 

 which is dichotomous in the latter species, is simple, and nearer the middle in 0. bur- 

 meisteri. The individuality of the telodont mandibles is so great in 0. hurmeisteri that it 

 is impossible to meet with two exactly alike. The specimen figured differs considerably 



Map II. — Map of the Indo-Malayan Eegion, showing the Distribution of the Species 

 allied to Odontolabis burmeisteri and 0. tooHastoni. 



ni. 



1. 0. sinensis, Westiv. 



2. 0. mouhoti. Parry. 



3. 0. cuvera, Hope. 



4. 0. delesserti, Guerin. 



5. 0. turmeisteri, Hojie. 



IV. 



6. 0. wollastoni. Parry. 



7. 0. vollenhoveni, Parry, 



8. 0. ludekingi, VolJenh. 



9. 0. lacordairii, Yollenh. 



h. 

 + . 0. gazella, Fahr. 

 %. 0. ineequalis, Kaup (Nias). 



from Hope's type and figure in possessing a strong ridge on the inner side of the 

 mandibles, while in other specimens in the British Museum (as fig. 5 b) the mandibles 



