THYSANOPTERA FROM JUAN FERNANDEZ AND EASTER ISLAND 
to 
Legs brown, middle and 
posterior femora at the base, 
including the trochanters, ti- 
biae at the top and _ tarsi 
yellow. 
Abdomen twice as wide 
as the head, almost cylindri- 
cal, but widening backwards 
to segment IV and tapering 
from segment VIII. Bristles 
small, except those of the 3 
posterior segments. Segment 
VIII has laterally behind the 
stigmata 3 spines: 1 short 
one, standing before the 2 
other ones; these are longer 
and slightly curved inwards; 
the posterior margin is pro- 
vided with small and _in- 
conspicuous chitinous dents. 
Segment IX has above and 
along the posterior edge 6 

Sie 

stout and prominent spines « ms / 
and ventrally 1 weaker and Vara 
shorter one. Segment X, x vay 
split open above, has on _ 
each side 3 spines, the dor- N 
sal one of which is the > = 4/ 
longest and stands more in A a | 
front than the other ones, ; ee 
the ventral one is weak and Fig. 2. Physothrips Skottsbergi n. sp.: a dorsal view of 
short and stands quite at head and prothorax ('$°); & antenna (#5); c lateral view of 
first and second antennal joints (325). 
the end. 
‘Anterior edge of the segments II—VII and tip of abdomen darker. 
Male: unknown. 
2 females, found on Masaterra 8th Dec. 1916. 
Ph, Skottsbergt has some resemblance to P%. dastcornis E. Reut. (Mar- 
cellia, Avellino, VIII, 1909, p. 35). I do not dare, however, to decide if this 
depends on real relationship or not, as I have not seen any specimens of P2. 
basicornis. 
Thrips tabaci Lindem. 
Of this species, very common in the greater part of North America, there 
are from Masatierra numerous specimens, all females, three of which are found 
in the spathe of Zantedeschia. 
