1952] 
Callan — Caribbean Tabanidae 
39 
archipelago, are some 619 and 380 square miles in area 
respectively, while some such as the Grenadines are mere 
islets and even rocks. Here a very interesting situation 
obtains in regard to the tabanid fauna. In Antigua, Dom- 
inica, St. Vincent and Barbados only a single species is 
known with certainty from each island (see Bequaert, 1940, 
Revista Ent., 11:253-369). In Martinique, Guadeloupe, 
St. Lucia and Grenada apparently no Tabanidae have ever 
been recorded. 
Indubitably the Lesser Antilles have a markedly de- 
pauperate fauna, and Bequaert (loc. cit.) has suggested 
that the paucity of large mammals may well be the cause 
of the scarcity of Tabanidae. Nevertheless, it is a re- 
markable fact that the family appears to be completely 
unrepresented in several of the larger islands of the group. 
I have searched personally in both Grenada and St. Lucia 
without finding any Tabanidae. As most tabanids are 
haematophagous, I have also made inquiries in these islands 
in regard to large blood-feeding flies attacking man or 
livestock, but no descriptions of such flies could conceivably 
refer to Tabanidae. 
The fauna of Trinidad and that of Grenada have quite 
different affinities, the former lying with the South Ameri- 
can continent and the latter with the Antilles. This is 
strikingly borne out by the Tabanidae. Although Grenada 
is visible from the Northern Range of Trinidad on a clear 
day, the two islands being separated by a channel only 
some 90 miles wide, Trinidad has a comparatively rich 
Tabanid fauna comprising 34 species, all of which are also 
known from South America, while in Grenada the family 
is completely absent. 
Additional Records of Tabanidae from Trinidad , B.W.I. 
Tabanus ( Chlorotabanus ) inanis Fabricius 
St. Augustine, male, 8 Jan. 1948 (D. S. Blake). 
Fairchild (1940, Revista Ent., 11: 713-722) mentions 
that he has seen specimens from Paraguay to British Hon- 
duras and that it has also been recorded from Mexico. Dr. 
