chap, ix.] INDO-MALAY ISLANDS: 229 



a very large number of birds, such as the great Argus 

 pheasant, the fire-backed and ocellated pheasants, the 

 crested partridge (Eollulus coronatus), the small Malacca 

 parrot (Psittinus incertus), the great helmeted hornbill 

 (Buceroturus galeatus), the pheasant ground-cuckoo (Car- 

 pococcyx radiatus), the rose-crested bee-eater (Nyctiornis 

 amicta), the great gaper (Cory don sumatranus), and the 

 green-crested gaper (Calyptomena viridis), and many 

 others, which are common to Malacca, Sumatra, and 

 Borneo, but are entirely absent from Java. On the other 

 hand we have the peacock, the green jungle cock, two blue 

 ground thrushes (Arrenga cyan-ea and Myophonus fiavi- 

 rostris), the fine pink-headed dove (Ptilonopus porphyreus), 

 three broad-tailed ground pigeons (Macropygia), and many 

 other interesting birds, which are found nowhere in the 

 Archipelago out of Java. 



Insects furnish us with similar facts wherever sufficient 

 data are to be had, but owing to the abundant collections 

 that have been made in Java, an unfair preponderance may 

 be given to that island. This does not, however, seem to 

 be the case with the true Papilionidas or swallow-tailed 

 butterflies, whose large size and gorgeous colouring has led 

 to their being collected more frequently than other insects. 

 Twenty-seven species are known from Java, twenty-nine 

 from Borneo, and only twenty-one from Sumatra. Pour 

 are entirely confined to Java, while only two are peculiar 



