226 THE ENTOMOLOGIST. 
tively much shorter and stouter antenne (Fig. 1c). The third 
antennal segment is only about two and a half times as long as 
broad. ‘The first segment is dark except near the tip, the 
second pale yellow, the third also pale except near the tip, the 
fourth to eighth are very dark brown. There are 33-36 trans- 
verse striations crossing the mid line of the prothorax and 10-12 
on the third abdominal tergite. There are no areas free of 
minute spines on the basal abdominal tergites as described for 
S. gracilicornis, but this is probably only a character of brachy- 
pterous forms, as S. bicornis agrees with S. staphylinus in this 
respect. 
Male.—The circular areas on the abdominal sternites 3-7 
are transverse oval in shape and gradually increase in size 
from in front, that on the third sternite being much smaller 
than in S. gracilicornis, and that in the seventh about the same 
size, but differing in shape. 
At present only brachypterous males and females of this 
species have been found on flowers of Ulex nanus and Ulex 
europeus. 
Localities. —New Forest, Hampshire; Bidston, Cheshire ; 
Ilfracombe, Devonshire; there is yet no certain evidence of this 
species outside England. 
Sericothrips bicornis (Karny). 
1895. Sericothrips staphylinus, Uzel, Monog. Thysanopt. p. 91. 
1910. Rhytidothrips bicornis, Karny, Mitt. Nat. Univ. Wein. 
vol. viii, p. 50. 
1918. Sericothrips staphylinus, Karny, Zool. Anz. xliii, p. 134. 
Measurements of Female-——Head length 0:112 mm., width 0-176 
rmm.; prothorax length 0°136 mm., width 0-232 mm.; pterothorax 
length dorsally 0:104 mm., width 0-240 mm.; abdomen width about 
0:36 mm. 
Antenne: Sepment. +. 52 3S 4) py a is 
Length (uz). 28 42 62 53 44 54 10 14 
Width (2). 29 28°20 20 19 18> eS oae 
Total body length about 0°95 mm. ; antennze 0:29 mm. 
Female (only brachypterous specimens seen).—Differs from S. 
gracilicornis in the shorter and stouter antenne (Fig. 1b), which 
are, however, not so short asin S. staphylinus. Also differs from both 
staphylinus and gractlicornis in the much more close nature of the 
spinose striation of the chitin. A mid-dorsal line on the prothorax 
in this species cuts about 48-50 transverse striations, and a similar 
count on the third abdominal tergite gives 20-21 transverse striations. 
As mentioned under S. staphylinus, the whole of the median portion 
of the tergites of the species (brachypterous) is covered with minute 
sete. 
Male.—The areas on the abdominal sternites 3-7 resemble those 
of S. staphylinus more than S. gracilicornis; the anterior one is 
small, but the three posterior are more nearly equal in size than 
