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Philippine Journal of Science 
1919 
the Trypaneidse or of the Ortalidas ; 5 it seems that the following 
only may properly belong to Chaetodacus: 
discipennis Walker, 1861, from Batjan; seems to be near chrysotoxus 
Hend. 
terminifer Walker, 1860, from Macassar; closely allied to cilifer Hend. 
and to ablephams Bezzi. 
diffusus Walker, 1860, from Macassar; seems to be allied to maculi- 
pennis Dol. 
emittens Walker, 1860, from Celebes; seems to belong to the ferrugineus 
group. 
absolutus Walker, 1861, from Ceram; seems to be allied to ferrugineus 
Fabr. 
expanders Walker, 1859, from the Aru Islands, seems to be very near 
ferrugineus Fabr. 
pectoralis Walker, 1859, from Aroe, Batjan, and Waigoe; seems to 
be closely allied to ferrugineus Fabr. 
As an example of the richness and the great variety of the 
Philippine fauna in Dacus species, it may be recorded that on 
the small island of Batbatan , 6 Antique Province, Panay, Mr. 
McGregor procured in a single collection, consisting of thirty 
specimens, no less than eight forms of Chaetodacus, seven of 
which are new to science, as follows: 
Chaetodacus atrichus sp. nov., 2 males and 1 female. 
Chaetodacus ferrugineus occipitalis var. nov., 6 males and 1 female. 
Chaetodacus ferrugineus pedestris Bezzi, 2 females. 
Chaetodacus ferrugineus limbiferus var. nov., 2 males and 5 females. 
Chaetodacus continuus sp. nov., 1 female. 
Chaetodacus mcgregori sp. nov., 1 male and 1 female. 
Chaetodacus mundus sp. nov., 6 males. 
Chaetodacus tetrachaetus sp. nov., 2 males. 
The genera of the true Dacinse at present known can be dis- 
tinguished with the aid of the following key which is a com- 
plement of that already given by me . 7 It must be remarked 
5 See my critical enumeration, Memoirs Ind. Mus. 3 (1913) 65-84. 
6 Batbatan Island lies 16 kilometers west of Culasi Point and has an 
area of about 770 hectares. The shores are precipitous coral rock, and 
there are few landing places. Nearly the entire island is 10 to 20 meters 
above the sea; the highest point has an elevation of about 120 meters. 
The soil is everywhere poor and thin. Considerable rice and a few coconuts 
and bananas are cultivated; the native vegetation is scanty and consists 
of plant species that are common on Panay. The flies described in this 
paper as from Batbatan Island were caught in the small town at the 
flowers of hedges of Jatropha curcas Linn., during a week of typhoon 
weather, June 24 to 30, 1918. Doctor Bezzi has requested me to add this 
note. — McGregor. 
' Philip. Journ. Sci.*§ D 8 (1913) 323. 
