from the Seychelles Islands and Rodrigues. 289 
Head with cheeks subparallel, about 1°7 times as long as 
broad ; a pair of long, fine interocular bristles placed imme- 
diately behind the posterior ocelli; postocular bristles also 
slender, remote from eyes, and situated approximately on a 
line with their inner margins. Antenne as in nigricornis, 
about 1°6 times the length of the head; relative lengths of 
Joints 3 to 8 approximately as follows: —55:56:49:40: 30:23. 
Pronotum strongly transverse, about 0:4 as long as the 
head and at least 2°5 times as broad as long. All sete 
present and well-developed; outer postero-marginal pair 
0°85 and the pair at anterior angles about 0'6 as long as the 
median length of pronotum. Wings as in nigricornis. Legs 
also much as in nigricornis, but fore-femur with several long 
and strong outstanding bristles on the outer margin, and the 
hair-like bristle at base of fore-femur within and those on 
outer margin of fore-tibia much longer than in nigricornis. 
Abdomen as in nigricornis; tube longer and more slender, 
about 1°25 times as long as the head and nearly five times 
as long as broad near base. ‘Terminal hairs colourless 
except basally, slender, slightly more than one-half (0°5) the 
length of the tube. Lateral abdominal bristles long and 
strong, brown ; those on 9 about as long as the tube and 
those on 6 longer than in nigricornis, about 0°7 the length of 9. 
Separated from nigricornis by the subparallel cheeks, the 
shorter and more strongly transverse pronotum, the cheto- 
taxy of the pronotum and fore-legs, and the longer and more 
slender tube. 
Loc. RopricveEs: two examples. 
Examination of material of the genus Liothrips from the 
Mascarene Islands and the Seychelles has enabled me to 
draw up a table of species forming a group recognized by 
the black antennz (the third joint being scarcely lighter in 
colour than the succeeding), with the tube longer than the 
head and the fore-wings with forty or more duplicated 
cilia :— 
1. Species with head converging posteriorly, and 
pronotal sete (excepting the postero-mar- 
ginal) shert, (Seychelles.) ...:.......0+- 2. 
Species with cheeks subparallel ; all pronotal 
setes long and well-developed. (Rodrigues.) JL. thomasset?, Bagn. 
2, Size larger. Head longer, approximately 1°6 
Ann. & Mag. N. Hist. Ser. 9. Vol. vii. 20 
