114 MAJOR E. E. AUSTEN. 



A ^ CitUcoidcs taken, with specimens of four other species of the same genus^ 

 at Sheikh Zowaiid, N. Sinai, 14.iii.l917, in the author's tent at night, and almost 

 certainly belonging to the species just described, measures (in the dried condition) 

 1 6 mm. in length from the anterior margin of the thorax to the posterior extremity 

 of the abdomen. In the genitalia, the side-pieces (basal portions of forceps) are 

 considerably less swollen than in the case of C. pulicaris, L., (^, so that the disparity 

 in size between these and the claspers is not so great. As regards zmng-mar kings, 

 with the exception of the distal costal blotch, which is undiminished, all the dark 

 markings are much reduced, those other than on the costal border appearing as 

 some eight or nine faint and almost completely isolated flecks. 



Culicoides guttularis, Kieff. 



Ciilicoides guttularis, Kieffer, Ann. Mus. Nat. Hung., xvii, p. 45 (1919). 



Three $$, near Jerisheh, 5 miles N.-E. of Jaffa, 29.iv.-8.v.l918, in author's 

 tent at night, on lining, above lighted lamp. Not observed biting, but one of the 

 three specimens brought back has its abdomen distended, apparently with blood. 



C. guttularis, the type of which was taken in Hungary (Budapest), also occurs in 

 Great Britain, and has been taken in Middlesex, Herts, Huntingdonshire and the 

 Isle of Arran. The specimens obtained in Palestine differ from the typical form, 

 as described by Kieffer, and agree with British examples, in having a dark transverse 

 mark across the centre of the axillary cell, the distal extremity of which, in contact 

 with the posterior branch of the fifth longitudinal vein, is also infuscated. 



CuEicoides odibilis, sp. n. (PI. iv, fig. 2). 



^. — Length (1 dried specimen), from anterior margin of thorax to posterior 

 extremity of abdomen, 1-25 mm. ; length of wing, 1-5 mm., greatest breadth of 

 wing, 0-6 mm. 



Antennal plume cream-huff {looking broianish in certain aspects, or ivhen the hairs 

 are matted together) ; dorsum of thorax dark brown, with conspicuous light grey mark- 

 ings ; wings infuscated and iridescent, with sharply defined milk-white or cream-coloured 

 spots, as shown in PI. iv, fig. 2. 



Head : proboscis and palpi mummy-brown, clothed with dusky hairs ; torus of 

 antenna blackish brown, third to twelfth segments inclusive ivory-yellow or almost 

 colourless, last three segments sepia-coloured in certain lights, clothed with dusky 

 hairs mixed with some pale hairs. Thorax dark mummy-brown, mesonotum 

 sparsely clothed with glistening yellowish hairs, and with ground-colour varied by 

 conspicuous and sharply defined light neutral grey markings, chief among which are 

 a sinuous mark, shaped something like a note of interrogation (?), embracing each 

 anterior slit-like depression, a small spot behind each of these marks, a transverse 

 row of four transversely elongate spots across the middle, and a broad, somewhat 

 trident-shaped mark on hind border ; base and sides of scutellum light neutral grey. 

 Abdomen dark neutral grey (claspers paler — light brownish olive), clothed 

 with dusky hair, paler (yellowish) towards the tips. Hypopygium : ninth 

 stemite deeply emarginate ; posterior margin of ninth tergite not noticeably 

 notched in middle line, finger-like extensions narrower than in C. guttularis, 

 Kielf. ; lobe-like processes of lower surface of projecting portion of ninth 

 tergite situate some distance in front of posterior margin ; forceps of usual form, 

 but claspers less elongate than in C. guttularis, and their distal extremities 

 not swollen as in the latter species ; harpes broad, with distal extremity of each 

 attenuate and elongate ; limbs of aedoeagus strongly chitinised and forming 

 a Y-shaped or lyrate rather than a U-shaped figure, as in C. guttidaris, stem of 

 aedoeagus moderately broad, apparently rather short, fairly well chitinised and 

 ending bluntly behind. Wings (PI. iv, fig. 2) deep mouse-grey, with a strongly 



