40 
Psyche 
[March 
Fairchild (in litt., 1951) informs me that . . . this species 
is very widespread in the neotropical region, is quite crepus- 
cular or even nocturnal, being not rarely taken at light, 
and is often quite a pest of livestock.” 
Stibasoma sulfurotaeniata Krober var. 
St. Augustine, female, 12 Dec. 1948 (D. G. Austin). 
The typical form was described from Para, Brazil and, 
as Dr. Fairchild (in litt., 1951) points out, the Trinidad 
variety lacks complete yellow bands on the third and fourth 
tergites, although these are present at the sides. 
Fidena sp. near niveibarba Krober 
Caura Valley, 2 females, biting man, 24 June 1945 (T. S. 
Jones) ; Maracas Valley, 3 females, biting man, 10 August 
1945 (E. McC. Callan) ; Caura Valley, 4 females, biting 
man, 9 July 1949 (E. McC. Callan). 
F. niveibarba was described from Minas Geraes, Brazil, 
and the Trinidad specimens are apparently closely allied 
to it. In Trinidad this species is very persistent in its 
attack. I have been bitten by it on numerous occasions 
while bathing in pools in the Maracas and Caura Rivers, 
and it has so far been found only in these two valleys of 
the Northern Range. It is rather strange that this species 
has not been previously recorded from Trinidad. 
