A NEW SPECIES OF CHIROTHRIPS FROM SOUTH AMERICA. 51 
tember, Zeller). Hagen stated that he had it from the Harz, 
Bavarian Alps, and Styria (?). Ulmer adds Hessen. Supposing 
it to be the true flavipennis of Pictet, it should occur in the Val 
d’Illiers, Valais. This list may require revision, as some of 
these localities may refer to H. chapmani. I found H. flavi- 
pennis commonly at Silvaplana (July 18th to 25th, 1904); Ris 
has taken it in the Murgtal (July 27th, 1888), at Cierfs in the 
Munstertal (July 14th, 29th, 1909); and Klapdélek in Carinthia 
(July 31st, 1899). 
A NEW SPECIES OF CHIROTHRIPS (Tuysanoprera) 
FROM SOUTH AMERICA. 
By C. B. Wiuurams, B.A., F.E.S. 
At the beginning of this year I received a small collection of 
miscellaneous insects from Mr. W. O. Backhouse, taken near 
Buenos Ayres, in the Argentine Republic, South America. Four 
genera of Thysanoptera were represented—Chirothrips, Franklin- 
tella, Physothrips, and Thrips; the Chirothrips, which is a distinct 
species, is described below; notes on the others are reserved for 
the present, in the hope of getting further material to elucidate 
some doubtful points. 
Gen. CHIROTHRIPS. ) 
Haliday, Ent. Mag. 1886, iii. p. 444; emend. Uzel, Monog. d. 
Thysanopt. 1895, p. 79; emend. Hinds, Proc. U.S. Nat. 
Mus. 1902, xxvi. p. 133. 
Chirothrips frontalis, sp. nov. 
Female (macropterous). 
Measurements.—Head, length 0:15 mm., width (behind the eyes) 
0:122 mm.; prothorax, length 0:22 mm., greatest width 0-26 mm. ; 
pterothorax, length 0°32 mm., width 0°30 mm.; abdomen width 
0-35 mm.; wing, length (from basal lobe) 0°80 mm., width (about 
halfway along) 0:045 mm. 
Antenne :—segment 1 2 3 4 5 6 ic 8 
leneih, (u)~ 14. ; 304, 38 >, 34, 734. 42... 22 16 
Width (4). (36. 405,24 24, 2h BO 7. 5 
Total length, about 1-4 mm., antenne 0°24 mm. — 
Colour uniform dark grey brown, fore tibiz and all tarsi a little 
paler, the third segment of the antenne distinctly lighter. 
Head (Fig. 1.) longer than wide, produced beyond the eyes into a 
long prominence more than half as long as the remaining portion of 
the head. The sides of this at first diverge slightly and then converge 
rapidly to a rounded point; on the converging portion the antennz 
are situated. There are no long hairs on the head but several small 
ones which vary slightly in position and may not be quite sym- 
metrical. In general they conform to the arrangement shown in the 
E 2 
