106 A. Monograph of Culierdae. 
it has amalgamated with the small spot in front of it; but it is narrower 
because the dark streak situated on the second vein is not joined on. ‘The 
third spot is longer than in pwnctulatus; in the streak on the first vein 
the origin is only indicated by three dots. The eutire stem of the upper 
fork has dark scales, but is divided by a sunken light spotlet at the 
superior central transverse vein into two longish strips. 
Of the central transverse veins the inferior one is at a distance of 
about one-third of its length from the middle one. The superior one is 
shifted further back. From the inferior central transverse vein the upper 
branch of the fifth vein and the fourth vein take their departure from 
each other, evenly and gradually. 
Ciliated margin spotty. 
Index of the auxiliary vein, 40°9 mm.; of the fifth vein, 36°2 mm. 
Length of wing, 2°9 mm. 
Halteres white. 
Head.—Vertex grey, tuft on vertex lighter. The palpi are from 
about the middle of the second joint white, with narrow dark rings 
around the roots of the third and fourth joints. Thus the ring around 
the light end of the second joint, possessed by An. punctulatus, is 
missing. The first joint is white above. 
Length of joints of palpi, 0°46—0°5—0:23—0°18. 
‘The end of proboscis white or whitish. 
Thorax as in leucophyrus. 
Legs similarly marked as An. leucophyrus, excepting the hind legs, 
which carry only a small light spot at the end of the tibia, and not a 
broad white band such as is characteristic of the other species. 
Head and proboscis.—2‘0 mm. 
Trunk.—-3°4 mm. 
é. Unknown. 
Hubitat.—Sumatra. 
Observations.—An. deceptor is related to An. punctulatus, the species 
indigenous to New Guinea, which appertains to the Australian fauna ; 
the region of distribution of deceptor, as well as of leucophyrus, however, 
lies this side of the border defined by Wallace, thus in the Indian fauna 
region. It is remarkable that both are seemingly rare species. Perhaps 
both are connected. 
In the observations on An. punctulatus I have pointed out that the 
specimens received by Theobald from Malacca, and which he takes for 
An. punctulatus, are not of that variety, and that, therefore, immediately 
a comparison with An. deceptor came into question. Unfortunately 
Theobald’s description, just on these points, are insuflicient, so that I have 
been referred to the illustrations on p. 176 and Table xxxvii., fig. 148. 
‘The markings of the thorax in it does not correspond, and as regards the 
wings there are diversities in the structure and in the drawing. In 
‘Theobald’s specimens, the second vein forks very much later than 
the fourth, in punctulatus and deceptor either earlier or at an equal 
height. Ican also add that the transverse veins, on which authors lay 
