16 Psyche [March-June 
8. Selasoma tibiale (Wiedemann). 
9. Stibasoma fulvohirtum (Wiedemann). 
Balandra Bay, female (W. Cook) ; Brasso, female, biting man 
(E. McC. Callan); Cumato, female (R. C. Shannon); Point 
Gourde, female, biting man (E. McC. Callan); Rio Claro, 
female (R. C. Shannon). 
10. Stibasoma mallophoroides (Walker) ( = Stibasoma dyrido- 
phorum Knab). 
Balandra, female (E. McC. Callan). 
Hine, who examined the type of Walker’s species at the Brit- 
ish Museum, wrote in his manuscript notes: “Type $ very 
much like S. dyridophorum Knab; wings almost exactly the 
same; the discal spot is hyaline in mallophoroides and extends 
into second basal cell, as is the case in Knab’s species. It would 
seem that the variation known to exist in this genus would 
bring the two together.” This synonymy was accepted by me in 
1940 (Rev. de Entomologia, 11, p. 2 72). S. mallophoroides was 
described from the Amazon region, Brazil. 
11. Dichelacera ochracea Hine. 
Valencia, 2 females, biting man (E. McC. Callan). 
12. Tabanus (Chelotabanus) discifer Walker, 185Q (= Tabanus 
albomaculatus Walker, 1854). 
Arima, female (E. McC. Callan) ; Rio Claro, female (E. 
McC. Callan); Tamano, female (R. C. Shannon). 
The species is known also from Brazil (Para; San Alberto on 
the Rio Branco in the State of Amazonas), Dutch Guiana and 
Venezuela. T. discijer was based on the female, T. albomacu- 
latus on the male. Krober (1931, Zool. Anzeig., 96, p. 53) re- 
ported it from Trinidad and recognized that discifer and albo- 
maculatus were the two sexes of one species. I was inclined at 
one time to regard Tabanus guttigaster Krober (1934) (= T. 
guttiventris Krober, 1929) as the same species and used that 
name in my paper on Antillean Tabanidse (1940, Rev. de 
Entomologia, 11, p. 272); but this synonymy is uncertain and 
T. discifer is, in any case, the older valid name. 
13. Tabanus (Chelotabanus) ferrifer Walker. 
St. Augustine, many females and males (J. T. Gonzalves; 
A. C. Salazar; E. McC. Callan; A. M. Adamson; Ruth O’Con- 
nor; M. D. French-Mullen; D. K. Kevan); also one female 
