902 JOURNAL, BOMB A Y NA TUBAL HISTORY SOCIETY, Vol. XVIII. 



together with the mountain zebra and the Asiatic wild ass, about 12 months : 

 Burchell's zebra, 11| to 13, and the horse 11 months. Camels and llamas 

 also occupy a high place in the series, the period being given as 13 months 

 in the case of the two species of camel, from 11 ^ to 13 in that of the llama, 

 and 11 5 and 11 respectively in the guanaco and alpaca. In the Bovidae the 

 longest periods occur in the anoa of Celebes, 9^ to 10 months, and the 

 beisa oryx, 10 to 8i months. Then comes the roedeer, from 9 to 9| months ; 

 Pere David's deer, 9^ ; the cow, zebu, gayal, bison, yak, and sambur, 9 ; eland 

 and gnu, from 8A to 9 ; wapiti, 8^ ; hippopotamus, nilgai, elk, hartebeest, 

 sable antelope, and waterbuck, 8 ; bushbuck, blesbok, and four-horned ante- 

 lope, 7| ; blackbuck and chamois, 6; springbuck, 5§ ; chevrotain, 5^ ; Nubian 

 ibex, goats, and sheep, 5 ; and swine, from 4 to 4^. It will be seen from these 

 figures that while as a rule the larger species have the longer gestation periods, 

 there are numerous exceptions to such a progressive series. 



As to the primates, data are very scanty, but the anubis baboon is stated 

 to go 7 months (against a former record of 5), which suggests that the alleged 

 period of 4^ months for the mandril is much too short. In two species of 

 lemur the gestation period is given as 3^ months. 



In the more specialised land carnivora the gestation is very short, being 

 about 3^ months in the lion and tiger, 3^ in the jaguar, 3 in the puma, leopard, 

 and striped hyaena, 56 days in the cat, and 9 weeks in the wolf, jackal, and dog. 

 On the other hand, the brown bear goes about 7, and the polar bear, it is said, 

 approximately 8 months with young, while in the common seal and the Cali- 

 fornian sea lion the period is believed to be 11 and 11£ months respectively. 



The rat and the house mouse claim the record for shortness with 21 days 

 each, while the hamster comes next with 22 days, followed by the domesticated 

 rabbit with from 28 to 30 days. In the Edentata the great anteater goes 6 

 months, and the hairy armadillo 2 months, while the only available record 

 among marsupials is the great grey kangaroo with 1} months. 



{From " The Field " of Uh April 1908.) 



No. V.— NOTE ON THE OCCURRENCE OF THE INDIAN CHEVROTAIN 

 OR MOUSE-DEER (TRAGULUS MEMINNA) IN BURMA. 



In the last number of the Society's Journal, Vol. XVI, No. 4, page 739, a map 

 is given showing the distribution of Tragulus meminna, the Indian Chevrotain, 

 but no mention is made of its occurrence in Burma. It is excessively common 

 along the sea coast of Moulmein and in January 1887 I shot one in dense 

 evergreen forest at 2,000 feet elevation which is rather extraordinary. 



T. A. HADXWELL, 



Conservator of Forests. 

 Forest Lodge, Maymyo. Burma, 



8</j December 1905 

 [This Note was mislaid and has only recently been found, hence the date.— Eds.] 



