THE BLOOD-SUCKING DIPTERA OF PALESTINE. 109 



clothed (somewhat less extensively than in following species) with fine, pale, decum- 

 bent hairs (macrotrichia), wing- fringe likewise pale ; costa as far as end of third 

 vein, first and third longitudinal veins, base of fourth vein as far as anterior 

 transverse vein and anterior transverse vein itself pale cream-buff, otherwise all 

 veins colourless ; distal extremity of third longitudinal vein curved round (not bent at 

 an angle) to meet costa, anterior transverse vein if anything slightly shorter than in 

 following species ; both radial cells distinct, but not quite so large as in latter. 

 Halteyes ivory-yellow, stalks brownish at base. Legs cream-buff, femora, except 

 at distal extremities, and tibiae, except at their bases, tinged with sepia, extreme 

 tips of femora and extreme bases of tibiae dark brown, extreme tips of hind tibiae 

 mummy-brown on inner side ; hair on legs pale yellowish, longer hairs on outer 

 surface of hind tibiae inconspicuous. 



Near Jerisheh, 5 miles N.-E. of Jaffa, 1-8. v. 1918, in author's tent at night, 

 on lining, above lighted lamp. 



The species just described is distinguishable from, the European C. pumilus, 

 Winn., which it resembles in size and in the coloration of the body, by the much paler 

 wings and legs, and by the decumbent hairs (macrotrichia) on the wings being pale 

 instead of dusky. 



Culicoides puripennis, sp. n. 



?. — Length (one dried specimen), from anterior margin of thorax to posterior 

 extremity of abdomen, 1-25 mm. ; length of wing, 1-4 mm., greatest breadth of 

 wing, 0-6 mm. 



Wings hyaline, somewhat milky, entirely devoid of markings ; croivn of head and 

 dorsum of thorax deep greyish olive ; legs pale. 



Head : vertex clothed with pale yellowish hairs, face greyish sepia-coloured ; 

 proboscis mummy-brown ; inner margins of upper lobes of eyes closely approximate ; 

 palpi sepia-coloured, third segment but slightly swollen, first three segments 

 clothed mainly with dark brown or blackish hair, last two segments clothed 

 with ochreous hair ; second segment of antennae (torus) light sepia-coloured, paler 

 and also somewhat smaller than in foregoing species, flagellum drab, clothed with 

 yellowish hair, five segments following torus bluntly ovoid. Thorax entirely without 

 markings, mesonotum clothed with pale yellowish hairs ; scutellum agreeing in 

 coloration with remainder of dorsum, and apparently bearing two central bristles 

 and on each side two lateral bristles, as well as several short hairs. Abdomen (in 

 dried condition) clove-brown, sparsely clothed with pale hairs. Wings : greater 

 part of surface, except base and costal, basal and radial cells, clothed with fine, pale, 

 decumbent hairs (macrotrichia), which at and towards distal extremity of each 

 wing are shorter and more closel}' set ; wing-fringe pale ; costa as far as end of 

 third vein, first and third longitudinal veins, base of fourth vein as far as anterior 

 transverse vein and anterior transverse vein itself cream-buff (distal half of third 

 longitudinal vein and portion of costa immediately above it somewhat darker), 

 otherwise all veins colourless ; distal extremity of third longitudinal vein bent up 

 at an obtuse angle to meet costa, anterior transverse vein fairly long ; both radial 

 cells well developed, the first about half as long again as the second. Halteres : 

 knobs straw-yellow, stalks slightly darker. Legs cream-buff or pale cinnamon-buff, 

 distal extremities of hind femora and hind tibiae sepia-coloured, extreme tips of 

 middle femora and tibiae tinged with brown, first joint of hind tarsi somewhat 

 infuscated ; hair on legs pale, inconspicuous. 



Deiran (Rechoboth), Jaffa district, 7 miles S.-W. of Ludd, 12.iv.l918, in room 

 at night. 



(3442) I 2 



