222, THE ENTOMOLOGIST. 
Segment . Le 2a ieee: 6 Fo Bae 
Length (u) . 82 46 75 66 55 40 36 16 8 
Width (1) » 40 Bi sia Ses 21. ae 
The species also possesses a single long spine at the hind 
angle of the prothorax, which must have been overlooked or 
accidentally removed in the specimens described by Reuter. 
Reuter’s descriptions were apparently all made from specimens 
mounted dry on cards—a method which leads to endless mistakes 
and cannot be too strongly condemned. 
Family Thripide. 
Genus Sericothrips, Haliday. . 
Up to the present all the European specimens of the genus 
have passed under the name of S. staphylinus, Haliday—a 
species originally described, quite insufficientiy, in 1836 as fre- 
quenting flowers of Ulex inEngland. Uzel, in 1895, redescribed 
what he called S. staphylinus, Hal., from Bohemian specimens 
found among grass, etc. In 1910 Karny described Rhytidothrips 
bicornis, which he later stated to belong to the genus Sericothrips 
and to be identical with S. staphylinus (as described by Uzel). 
I have specimens of the species described by Karny from his 
coliection and also specimens from the collection of Dr. Uzel. I 
have also been able to obtain some numbers of the British 
species from flowers of Ulex, which is without any doubt that 
described by Haliday. An examination of these shows that the 
species called by Uzel staphylinus and that described by Karny 
as bicornis are the same, but are not the British S. staphylinus 
of Haliday. A second British species is described below, so 
that there are now three European members of this genus 
known. 
Sericothrips gracilicornis, sp. nov. 
1918. Scericothrips staphylinus. Williams, Journ. Econ.) Biol, 
vill, p. 219 (in part). 
1918. » 5 Bagnall, Journ. Econ. Biol., 
Vili, p. 232 (in part). 
Female ' (macropterous).—Measurements.—Total length about 
1-1 mm., head length 0-116 mm., width 0-188 mm.; prothorax 
length 0:144 mm., width 0:224 mm.; pterothorax length (dorsally) 
0:210 mm., width 0:260 mm.; abdomen width about 0.320 mm. ; 
wing length 0:78 mm.; width (about half way along) 0:040 mm. 
Antenne: Segment»..1 2 3 4 5 6 7 8 
Length (un). 26 40 74 60 49 58 12 14 
Width (pz) .'.132:, 29° 21 9205917 7 1B 
Total length of antennze 0:330 mm. 
Colowr.—Body dark brown. Femora’as dark as_the bodyzexcept 
