THE CANADIAN ENTOMOLOGIST. 238 



MOSQUITO NOTES. 



BY C. S. LUDLOW, M. SC, 



Laboratory of the Office of the Su.''geon-General U. S. Army, Washington. 



From one of the smaller of the Phih'ppine Islands conies a new 

 Megarhinus, which is noticeable for its dark caudal tuft and banded tarsi, 

 and with it a specimen of Siegomyiafasciata, Fabr., accurately marked in 

 all points except the hind tarsi, which lack all the white bands except those 

 on the metatarsi, while from Jolo is sent a new variety oi Desvoidea. 



The Megarhinus, and an apparently new Grabhamia from California, 

 are described, and the differences for the Desvoidea are given below : 



Megarhinus Le Waldii, n. sp. — Male.— Head dark brown, covered 

 with flat iridescent scales, probably brown, but appear blue and green, 

 with a light bluish, almost white, rim around the eyes, a few brown bristles 

 projecting forward; antennte dark brown, almost black; plumes heavy 

 and very dark, the basal joint densely covered with fine white hair-like 

 tomentum, the first joint long and densely scaled, the iridescence showing 

 as purple and white; proboscis dark; palpi dark, a few light scales (or 

 showing light iridescence) on the first joint, the last joint twice as long as 

 the penultimate, and pointed ; clypeus brow^n, covered with fine white 

 tomentum ; eyes blue. 



Thorax dark brown, densely covered with scales (probably brown) 

 which show " peacock blues and greens " all over the dorsum, a little 

 lighter to almost bluish white laterally, a iG.\w bristles at the wing joint ; 

 scutellum like mesothorax, lateral lobes apparently lighter, and a few 

 brown bristles on each lobe ; prolhoracic lobes heavily scaled like meso- 

 thorax ; pleura dark brown, very densely covered with white scales ; 

 metanotum dark brown. 



Abdomen dark, heavily scaled, showing blue-green iridescence. 

 First segment has a brown median spot, light blue submedian and white 

 lateral spots. Apical hairs on most of the segments very short or lacking; 

 the sides, however, are densely white-haired, and these white hairs 

 connect with the caudal tuft, so that the cephalic part of this has some 

 white in it, the main body of it being dark brown, almost black. There 

 are also suggestions of small white lateral spots on some of the segments. 

 Venter dark. 



