364 Mr. R. 8. Bagnall on new Thysanoptera. 
first observed this gall thrips at Gizsh on Nov. 15, 1904, 
and was kind enough to submit the excellent photograph 
reproduced on Pl. IX. 
' Gynaikothrips willeocksi, sp. n. 
This species very closely approaches G. obscuripes, above 
described. ‘The tarsi are yellowish-brown instead .of con- 
colorous with the tibie, whilst the intermediate antennal 
joints 3-6 are yellow and 7 yellow lightly tinged with 
brown. The wings are unavailable for study in the single 
prepared example. 
The head is longer, being about 1°3 times as long as 
broad, whilst the postocular sete are also longer, even in 
relation to the larger eye, being about 0°9 the dorsal length 
of the eye. The pronotum is also longer and less trans- 
verse. The tube is about 0°6 as long as the head; more 
rapidly narrowed towards tip in the distal third than in 
obscuripes, where it is only 0:4 as broad as at base. 
Type. In Coll. Bagnall. 
Hab. Heyer, Ezbst el Nakhl (fF. C. Willcocks), Reg. 
no. 306. 1 2 with above. 
Table of the Genus Gigantothrips, Zimm. 
1, All legs unicolorous with body. Tube 2°5 
times as long’as head) .,.....55..0..s008 ... G.caudatus (Bagn.,). 
Legs coloured otherwise ; tube less than twice 
the length of the head -sia75.9 0% oe aie 0.) 2 
2. All tibizee wholly light lemon-yellow in colour. G. tebialis, sp. n. 
Hind and intermediate tibize yellow in their 
distal two-fiths or thereabouts ............ 
3. Tube less than 1°5 times as long as the head 
ES LL) a Gh a tet sted oie sis evete binant G, elegans, Zimm. 
Tube about 1°8 times as longas the head .... G. gracilis (Bagn.). 
Gigantothrips tibialis, sp. n. 
Length 5°5 to 5°7 mm. 
Colour brown (light brown in the two preparations before 
me, but these may be slightly teneral) ; all tibiz and tarsi 
of a light lemon-yellow, the latter with distal part light 
brown. Wings colourless, with cilie lightly smoked. 
Antenne pale yellowish-white, except joints 1, 2,7, and 8 
which are light brown, 6 pale grey-brown in the distal half, 
and 4 and 5 lightly tinged at apices. 
