26 BARBOUR: ZOOGEOGRAPHY. 



recorded two species of tortoises, Orlitia borneensis Gray and Brookeia baileyi 

 (Bartlett), both of which together with Liemys inornata Blgr., must be con- 

 sidered as really representing only one species, Orlitia borneensis Gray. 



His list shows a total of 212 species, of which sixty-four are peculiar to the 

 island; while the table which I have prepared (see p. 169-203) show 207 Bor- 

 nean species, of which sixty-five are peculiar to the island; so that, as will be 

 seen, our results are very close. The fact that only small changes have been 

 made necessary during the last decade would seem to indicate that our knowl- 

 edge of the fauna of Borneo is approaching completion. 



In 1895 Robert Bartlett published a list of the reptiles of Borneo in the 

 Sarawak gazette, 25. This list I have been unable to consult, and sol have been 

 unable even to estimate the \'alidity of some of the species which he proposed; 

 e. g. his Lygosoma kinabaluensis I know only l)y name, and I am unable to dis- 

 cover anything regarding its identity, as Shelford, for one, omits all reference 

 to it. 



To sum up these species in the same way as we have done for other islands, 

 we find fifteen fresh-water tortoises, none of which are peculiar to the island, 

 and two crocodileans, the wide-ranging C. porosus and Tomistoma schlegelii, of 

 which we have spoken before. The lizards are seventy-six in number, of which 

 thirty species, or forty per cent, are confined to Borneo. Lanthanotus restricted 

 to Borneo, as has been so satisfactorily pointed out by Boulenger, has its nearest 

 relatives in the two species of Heloderma occurring in southwestern United 

 States and Mexico. This form is probably fast dying out, as its relatives have 

 in the past died out o^'er most of the rest of the world; the species is now so 

 rare that we know of only two specimens, one in the museum at Kuching, 

 Sarawak, and the other, the original type, in Vienna. 



It is very interesting to note in Borneo the presence of two species of Japa- 

 lura, one, /. ornata confined to Borneo itself, the other, J. nigrilabris, known 

 only from Borneo and the Natuna Islands. These are the only species of this 

 genus which occur amongst the East Indian Islands, though of course, as is well 

 known, there are other forms which are peculiar to Formosa, to the Riu Kiu 

 Islands, and Botel Tobago. On the mainland the genus has a range from the 

 Himalayas and eastern Bengal through Assam to west China. No species is 

 known from the Malay Peninsula. 



Of the snakes there are 110 species, of which thirty-five species, or thirty 

 per cent, are not found elsewhere. The four genera, Hydrablabes, Lepturophis, 

 Oreocalamus, and Idiopholis occur nowhere else. Another genus, Agrophis, 



