OF ANOPHELINE MOSQUITOS IN MALAYA. 139 



will be to give, after making a few preliminary remarks, (1) a 'definition' of 

 the species in as simple terms as possible, which will be exclusive (in Malaya) 

 for the species under discussion ; (2) the general naked-eye appearance ; and 

 finally (3) the complete revised description. 



Myzorhynchus sinensis, Wied. 



Remarks. The wing marking has no specific character except the two costal 

 spots and the apical fringe spot ; the abdominal ventral tuft is not a specific 

 character. 



Definition. Mosquito with banded palps and not more than two costal spots. 



Naked-eye appearance. Dark brownish black mosquito without obviously 

 dappled wings ; its palps not half as wide as the head. 



Description. Head: on the vertex a tuft of long white scales projecting 

 forward, on the occiput a patch of bluish white upright scales, on the nape and 

 cheek dark brown upright scales. Palpi with four narrow bluish white bands. 

 Proboscis all black. Thorax clad with long golden hairs ; patagia with a dense 

 cockade of palisade scales. Wings clad with dark chocolate-brown, golden and 

 creamy scales ; the costa with brown scales broken by two golden spots, one 

 where the subcostal vein joins the costal, and one where the first longitudinal 

 meets the apex ; the wing-fringe golden at a spot at the apex. Legs dark brown, 

 except for golden banding at the articulations ; the extremity of the fifth tarsal 

 segment dark brown. Abdomen dark brown, clad with long golden hairs. 



Myzorhynchus barbirostris, van der Wulp. 



Remarks. I have found this species without a white spot in the wing-fringe 

 opposite the lower branch of the fifth long vein, so it can no longer be considered 

 that this character is specific. I have also found specimens without a ventral 

 abdominal tuft on the eighth segment, and it is almost certain that the tuft in 

 these specimens had not been rubbed off, because on each of the other abdominal 

 segments there was a small undamaged tuft of black scales. I thought at first 

 that these represented a new species, but the large black shaggy palps, and the 

 white spot on the wing-fringe, so common in this species, could not be dis- 

 regarded. 



Definition. Mosquito with black palps, more than half the width of the head 

 at their base. 



Naked-eye appearance. A black mosquito with very heavy mouthparts. Wings 

 not dappled. 



Description. Head : tuft of long scales projecting forward from the vertex, 

 behind this a few dirty white upright scales, and the rest of the head with jblack 

 upright scales. Palpi all black, clad with scales which are particularly long at 

 the base and can usually be seen discrete. Proboscis black-scaled. Thorax: 

 prothoracic lobes with a cockade of black palisade scales ; mesonotum clad with 

 pale hairs, a tuft of long narrow white scales projecting over the neck, and a tuft 

 of black scales on each shoulder over the patagia. Wings clad with black scales, 

 with yellowish scales mostly over the posterior veins ; the costa with two golden 

 spots, one where the subcostal vein joins it, the other where the first longitudinal 



