116 THE NORTH AMERICAN SPECIES OF DROSOPHILA. 
is absent. Four of the 5 cosmopolitan species of Drosophila occur in 
Australia at least; and the fifth, D. repleta, is probably to be recog- 
nized in D. marmoria Hutton (New Zealand) and D. nigropunctata van 
der Wulp (Java). It is recorded from Calcutta (Bezzi). Gitona 
perspicax Knab occurs both in the Oriental region and in Hawaii. 
This leaves 91 of the total of 97 recognized species as endemic. 
The 11 genera are distributed as follows within the region: 
Apsinota: Formosa, Java, New Guinea. 
Camilla: Java. 
Curtonotum: Philippines. 
Drosophila: New Zealand to Philippines, Java, and India. 
Gitona: India, Philippines. 
Leucophenga: Australia to Formosa, Java, and the Nicobars. 
Mycodrosophila: Java. : 
Scaptomyza: Java. 
Stegana: New Guinea to Formosa and Ceylon. 
Zaprionus: Java, India. 
Zygothrica: Simalu (off Sumatra). 
Australia and New Zealand have been included here only because 
our present knowledge of them makes any other treatment out of the 
question. The total number of species described from them is 10, 
of which 4, or probably 5, are cosmopolitan, while the descriptions 
of 3 of the others are quite inadequate. Only 2 genera (Drosophila 
and Leucophenga) are represented. New Guinea is also hard to 
classify, as only 6 species of the subfamily are recorded from it. These 
6 species belong to the genera Apsinota (1), Drosophila (3), Leuco- 
phenga (1), and Stegana (1). Two of these are Walker species and 
therefore doubtful. The same species of Apsinota is also recorded 
from Java. 
De Meijere has described more than 60 oriental species of Droso- 
philine, mostly from Java, with a few from Sumatra and Simalu. 
Formosa and the Philippines are fairly well known. The rest of the 
region is practically unexplored. There must be very many unde- 
scribed species in India, the Malay peninsula, Borneo, and other parts 
of the region. 
POLYNESIAN REGION. 
With the exception of Drosophila coffeina Schiner, from Tahiti, all 
the Polynesian records are from the Hawaiian Islands.* The genera 
Idiomyia and Titanocheta are endemic. None of the other genera of 
the subfamily are recorded except Drosophila and Gitona, and the 
latter is perhaps introduced. Only 3 of the 5 species here considered 
to be cosmopolitan are recorded—Drosophila immigrans, D. melano- 
gaster, and D. repleta. Gitona perspicax Knab, which also occurs in 
the Oriental region, is the only other species known from any other 
region. This leaves 48 of the 52 species as endemic. 

* T had overlooked the fact that Jepson (1917, Ann. Rept. Div. Ent., Dept. Agric. Fiji, 1916, 
16) records Drosophila melanogaster from Fiji. 
