294 
COSTA RICAN DIPTERA 
4. Band of the udng as two half bands cervicornis Fabricius 
Band of the wing as one entire band grandis Ricardo 
The distribution records of these five species show that all of 
them have quite a wide range, and that some of them have been 
taken in South America far below the equator. D. scapularis 
has been reported by Bellardi from Tehuantepec and I have seen 
numerous specimens from Vera Cruz. A male specimen col- 
lected by myself at Puerto Barrios, Guatemala is referred here 
with some doubt. 
There is before me a female specimen of D. emarginata from 
the state of Chiapas and numerous others from British Guiana, 
while Lutz reports specimens from Para, Brazil. 
There appears to be no other record for pulchra except the 
type locality, which is the state of Guerrero, Mexico. 
The known range of grandis is British Honduras to Costa 
Rica. 
Lutz indicates that the distribution of cervicornis is from 
Panama south to the state of Espirito Santo, Brazil and to Peru, 
thus estabhshing the fact that its range is more southern than 
any of the others mentioned. He calls attention also to Willis- 
ton’s improbable Mexican records, which the author himself 
considered doubtful at the time he wrote them. 
As most of the work in this genus has been with female speci- 
mens, there are further problems for solution when the males of 
the various species are fully considered. 
Tabanus quadripunctatus Fabricius 
1805. Tahanus quadripunctatus Fabricius, Syst. Anti, 99. 
Four specimens. Three of them taken at Juan Vinas, Feb- 
ruary 17, 1910, the other from Cerro Jocosal, February 28. Bel- 
lardi called this species nigropunctatus and reported it from Cor- 
dova and Huastec, Mexico. Osten Sacken had it from Guate- 
mala, Costa Rica and Brazil. My own collecting in Guatemala 
produced the species from Santa Lucia and Laguna. Several 
specimens of both sexes were observed flying over water and 
alighting on protrudmg stones. 
There are a number of specimens before me from Brazil and 
British Guiana also. Fifteen specimens show a range in size 
from twelve to eighteen millimeters in total length, but most of 
them are very near sixteen milluneters long. 
