from the Seychelles Islands and Rodrigues. 271 
before mounting) and sharply constricted at extreme apex ; 
dorsal carinations running into distal half. Apical hairs 
_ Minute, weak. Abdominal bristles strong, yellowish or 
colourless, outer pair on 9 longer than the tube. 
This species is easily separated from A. proturus by its larger 
aud broader form, the broader wings, the size and shape of 
the tube, and the minute setz on prothorax. 
Loc. Stvcuettes. Mahé: one example only, top of 
Mount Sebert, nearly 2000 feet, 1908-9. (Sex uncertain, 
probably ? .) 
Genus C@nvuROTHRIPS, nov. 
Size small. Closely allied to Acallurothrips, but distin- 
guished by the form of the tube, which approaches the normal, 
though furnished with the basal longitudinal ribs. The 
head of the type-species is large, as long as broad with the 
sides converging behind, and the mouth-cone not so large 
comparatively. The prothorax is considerably shorter than 
the head. Fore-wing with duplicated cilia, 
Type. Cenurothrips brevicollis, mihi. 
9. Canurothrips brevicollis, sp. n. 
(Pl. V. figs. 5,6.) 
? .—Length about 1°8 mm., breadth of pterothorax 0°4 mm. 
Head and thorax dark chestnut-brown, abdomen darker : 
fore-tibize and ali femora distally yellowish. Antenna with 
segments 1-3 lightish brown, 3 with base yellowish ; 4 darker 
than 3 and 5-8 deep black-brown. Wings brownish-yellow, 
cilia smoky. 
Head about as long as broad, converging posteriorly, 
broadest behind eyes. Eyes moderately finely facetted, 
occupying 0°3 the length of the head. Postocular setz long. 
Ocelli widely separated, posterior pair near inner margins of 
eyes and on a line through their middle; anterior one for- 
wardly directed. Antenne not quite twice the length of the 
head ; apical and penultimate joints closely united ; relative 
lengths of 38-8 approximately as follows :—82 : 29:27:25: 
16:12 (together 26). Mouth-cone not so large compara- 
tively as in A. proturus and A. macrurus. 
Prothorax only 0-4 the length of the head, strongly 
transverse, about three times as broad as long. Sete short, 
excepting the postero-marginal ones, which are about 0°75 the 
