112 MAJOR E. E. AUSTEN. 



stated, sepia-coloured ; in $, decumbent hairs absent from base of wing, including 

 basal cell and costal border as far as end of first longitudinal vein, remainder of 

 wing well clothed with these hairs, which are especially close together on costal 

 border beyond distal costal spot. H alter es in both sexes cream-coloured or cream- 

 buff. Legs : femora and tibiae, at least of hind legs, usually darker (tinged with , 

 mummy-brown or sepia) except at base and tip, so that these joints have a pale band 

 at each extremity, extreme tips of femora and tibiae, at least of hind legs, often 

 mummy-brown . 



Near Jerisheh, 5 miles N.-E. of Jaffa, 26.iv.-8.v.l918 : type of S and 4 ^ 

 para-types, type of $ and 10 $ para-types, in author's tent at night, on lining, 

 above lighted lamp. Not observed biting. 



Although in general appearance, including coloration and wing-markings, closely 

 resembling the East and West African Culicoides {Johannseniella) fulvithorax, 

 Austen, the species just described is distinguishable therefrom, inter alia, by its 

 generally larger size, by the less elongate shape of the fourth to the tenth segments 

 inclusive of the $ antenna, and by the fact that in the wing the distal pale spot On 

 the costa, instead of surrounding the terminal portion of the third longitudinal 

 vein, is only in contact with the upturned part of its extreme tip. 



From the N. Italian Culicoides susae, Kieff., C. tentorius may be distinguished 

 by its larger size, by the fourth to the ninth segments inclusive of the $ antenna not 

 being globular, by the halteres being cream-buff or cream-coloured instead of white, 

 and by the presence of a row of long hairs on the extensor surface of the hind tibiae. 



Culicoides odiatus, sp. n. 



?. — Length (2 dried specimens), from anterior margin of thorax to posterior 

 extremity of abdomen, 1-4 to 1-5 mm. ; length of wing, 1-4 to 1-5 mm., greatest 

 breadth of wing, 0-6 to 0-8 mm. 



Dusky species, with very hairy wings, which are almost entirely devoid of markings. — 

 Head and thorax dark mummy-brown [vertex darker), u'ithout spots or other markings ; 

 abdomen {in dried specimens) russet-brown or russet ; wings with markings in each 

 case confined to a pair of small, faint, ill-defined and inconspicuous maculae on or near 

 costal border. 



Head clothed above with brownish hair ; inner ma-rgins of upper lobes of eyes 

 almost in contact below ; proboscis cinnamon-brown ; palpi dark mummy-brown, 

 clothed with dark brown hair, third segment strongly swollen, expansion com- 

 mencing immediately beyond base ; antennae light sepia-coloured, agreeing closely 

 with those of C. tentorius, Austen {cf. fig 2, p. HI) as regards shape of segments, 

 and clothed with yellowish (ochraceous-buff) hairs. Thorax : mesonotum clothed 

 with ochraceous-buff hairs and with dark brown bristles ; sciitellum bearing, in 

 addition to several short hairs, apparently four central bristles, as also on each side 

 two lateral bristles. Abdomen sparsely clothed with pale hairs, except on sides 

 and at distal extremity, where a portion at least of the hairs are dark brownish. 

 Wings : with exception of basal and costal cells, practically entire surface clothed 

 with long, closely set, decumbent hairs, which, especially in region beyond level of 

 end of third longitudinal vein, where they are thickest, largely overlap one another ; 

 of the two faint pale maculae in each wing, that nearer the base surrounds the anterior 

 transverse vein and extends only indistinctly to the costa, the other is situate on and 

 adjacent to the costa at the end of the third longitudinal vein, the extreme tip of 

 which it includes ; second radial cell much broader than the other, which is practically 

 obliterated and indistinguishable. Halteres cream-buff, distal extremities of stalks 

 greyish. Legs : femora light sepia-coloured (hind pair darker), in each case with a 

 faintly marked pale band (less conspicuous in that of hind pair) before extreme tip. 



