379^ 



ISLAND LIFE 



107. Tuidinus atrigiilaris. 



108. ,, teplirops. 



109. Plilopyga rufiveiitris. 



110. ,, leucogramniica. 



111. *Corythociclila crassa. 



112. *Turdmulus exsul. 



113. Ornithocichla whiteheadi. 



TuRDiDiE (Thrushes). 



114. **Cettia oreophila. 



115. *Merula seebohmi. 



116. **Geocichla aurata. 



117. ,, everetti. 



118. **Myiophoneus boriieensis. 



119. Brachypteryx erythrogyna. 



120. Copsychus niger. 



121. *Cittocincla suavis. 



122. * ,, Strickland!. 



123. Hydrocichla ruficapilla. 



124. ^Henicurus borneensis. 



125. *Phyllergates cucullatus. 



126. Burnesia superciliaris. 



Representative forms of the same character as those 

 noted above are found in all extensive continental areas, 

 but they are rarely so numerous. Thus, in Mr. Elwes' 

 paper on the " Distribution of Asiatic Birds " he states 

 that 12"5 per cent, of the land birds of Burmah and 

 Tenasserim are peculiar species, whereas we find that in 

 Borneo they are about 27 per cent., and the difference may 

 fairly be imputed to the greater proportion of slightly 

 modified representative species due to a period of complete 

 isolation. Of peculiar genera, the Indo-Chinese Pen- 

 insula has one — Ampeliceps, a remarkable yellow-crowned 

 starling, with bare pink-coloured orbits ; while two others, 

 Temnurus and Crypsirhina — singular birds allied to the 

 jays — are found in no other part of the Asiatic continent, 

 though they occur in some of the Malay Islands. Borneo 

 has seven peculiar genera of passeres,^ as well as 

 Hsematortyx, a crested partridge ; Lobiophasis' a pheasant 

 hardly distinct from Euplocamus ; Heteroscops, an owl ; 

 and Heterococcyx, a peculiar cuckoo. 



The insects and land-shells of Borneo and of the sur- 

 rounding countries are too imperfectly known to enable us 

 to arrive at any accurate results with regard to their distri- 

 bution. They agree, however, with the birds and mammals 

 in their general approximation to Malayan forms, but the 

 number of peculiar species is perhaps larger. 



The proportion here shown of about one-third peculiar 

 species of mammalia and more than one-fourth peculiar 



^ These are Allocotops, Chlorocharis, and Ptilopyga, among the 

 Timeliidae ; Tricophoropsis and Oreoctistes among the Brachypodidse ; 

 Chlamydochcera among the Campophagidae, and Pityriasis, the bare-headed 

 shrike. 



