15 INTRODUCTION. 
and D. Kunstieri. Тһе endemic factor is here therefore 1%, or 23. Common to the 
Malay Peninsula and Sumatra, but not extending elsewhere, we have only two species— 
D. Curtisii and D. stercorazea. On the other hand, common to the Peninsula and to 
Borneo, but not in Sumatra, we have 2. phyllanthoides; and common to the Malay 
Peninsula, Java, and Borneo, but not hitherto reported from Sumatra, we have D; 
Scortechini ; this species, though not yet collected in Sumatra, is present in Bangka. 
The rest of the Peninsular species are of wider distribution, They include D, velutina, 
which goes to Borneo on the one hand and extends to Indo-China on the other, 
existing not only in Tenasserim, but recurring in Sylhet; D. /amarindifolia, which is 
met with in every part of Malaya Proper, and occurs throughout Indo-China as well 
as in the Himalaya, South-Western China, and the Philippines; D. rostrata, which 
extends eastward to Celebes, and westward to Southern India; D. parviflora, which 
is everywhere in Malaya and goes east to the Philippines and the Moluccas; 
D. latifolia, Indian, but appearing in the Andamans; finally, the widespread D. torta, 
Sumatra has but six species of Dalbergia, and of these only one is subendemic; 
this is D. Forbesii, which, however, occurs also in Lingga. The remaining species are 
D. Junghuhnii, which recurs only in Java; D. stereoracea and D. Curtisit, which recur 
only in the Malay Peninsula; D. parviflora, which is widespread in Malaya, and 
extends to the Philippines and the Moluccas; D. tamarindifolia, throughout Malaya, Indo- 
China, the Himalayas, South-Western China, and the Philippines; lastly, the generally- 
distributed D. torta, It is to be observed that D. rostrata, which might be expected 
to occur in Sumatra, has not hitherto been reported from that island. Java, 
though as rich in species as Sumatra—it must be recollected, however, that Sumatra 
is not so well explored as Java—has по endemic species. The six Dalbergias 
present are: D. Junghuhnii, which goes to Sumatra only; D. Scortechinii, which goes to 
the Malay Peninsula and to Borneo; D. parviflora, which extends to the rest of Malaya 
and recurs in -Celebes, the Philippines, and the Moluccas 3 D. iamarindifolia, which is 
found everywhere in Malaya, Indo-China, the Eastern Himalaya, South-Western China, 
and the Philippines ; D. rostrata, which extends from Celebes to Southern India ; and а 
species that is here referred to D, sissoides, but which шау be a form of D. latifolia: 
in either case it extends to India. Here it is to be observed that D. wrta, so widely 
spread throughout South-Eastern Asia, has not yet been recorded from the соазїз of 
Java, The only other coasts of which the same is true are those of Coromandel and the 
Eastern Sunda Islands, | | 
If the four Malayan subareas be treated conjointly, we find that there are 22 
species, of which 14 are endemic. The endemic factor thus is 14 ог 626--а figure 
somewhat lower than the corresponding one for Papuasia, and not much higher than 
that for China as a whole. : 
| Turning, again, to the divisions of India, we find that in Malabaria there are 
14 species, four of which are endemic. These are D. Gardneriana, D. rubiginosa 
D. acactaefolia, Р. malabarica. The endemic factor is thus 54, or 99%, Of the 
distributed species, one (D. melanoxylon) is a widely-spread African species, which is 
frequently planted in India, but appears to be wild in Canara and the Сопсап, 
Of the remaining nine, five occur ın Coromandelia, Those that do not appear there are— 
D. congesta, which recurs in Western Indo-China; D. sissoides, which recurs in Јата ; 
D, rostrata, which is present in Ceylon and spreads from Java to Celebes; and 2. е 
Of the five which Malabaria shares with Coromandelia, one species (D. multiflora) is 
peculiar to the conjoint area and another (D. lanceoiaria) is nearly во, as it crosses the 
