52 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. XX. 



nitidus, C. platyspathus, C. myrianthus, C. melanacanthvs, C.palus- 

 tris, and Plectocomia macrostachya. Spread all over the sub-region, 

 from Chittagong to Tenasserim, we find Areca triandra, Pinanga gra- 

 cilis, Caryota urens, Nipa fruticans and Calamus latifolia. In Pegu 

 the following species have been found : — Pinanga hexasticha (endemic 

 in Pecu), P. hymenospatha (endemic), Wallichia disticha, Arenga 

 saccharifera, Livistona speciosa, Calamus arborescens (endemic), C. 

 lonqisetus, Zalacca beccarii, Plectocomiopsis paradoxus, and others. 



The sub-regions Eastern and Central Burma are little known, and 

 no materials are at our disposal. 



Of the Andaman Islands, only a few points have been explored by 

 botanists, of which the chief is Port Blair. Barren Island, Narcondam 

 and the Coco have been visited by Major Prain. The climate of these 

 islands is almost equatorial in its uniformity, and in many respects 

 similar to that of Tenasserim. They are hilly, the hills being for the 

 most part only a few hundred feet in height, and covered with forests, 

 which are typically Burmese. The vegetation of the interior hills, 

 which reach 2,400 feet in height, is not known at all. The mean 

 temperature of Port Blair is 80°. There i> but little variation during 

 the year ; March and April are the warmest months, with a mean 

 temperature of 82°, and a mean daily maximum of 92°. The average 

 extreme range of temperature in the course of the year is only 26°. 

 The diurnal range of temperature is as much as 14° or 1 5° in the 

 driest months, February, March, and April. The mean humidity is 

 83 per cent, of saturation. The monsoon sets in in May and the 

 rainfall of that month is 'little less than that of June. The number 

 of rainy days amounts to nearly half the clays in the year, and 

 during the summer monsoon there are only 5 or 6 rainless days in 

 the month. A comparatively considerable number of palms have 

 been recorded from the Andaman Islands. Areca triandra, Pinanga 

 manii, Pinanga kuhlii, Caryota. mitis, Phoenix paludosa, Corypha 

 umbracuiifera, Licuala peltata, L. spinosa, Calamus longisetus, 

 C. viminalis, C. andamanicus, C. palustris, Dcemonorops manii 

 (endemic), D. hurzianus (endemic), Kortlialsia laciniosa. 



The flora of the Nicobar Islands is even less known than that of 

 the Andaman Islands. Climatically there is not a great difference 

 between the two groups of Islands, and as to the vegetation of the 

 Nicobars, we cannot decide at present whether it belongs to the 



