Dec., 1904.] 
Tabanidae. 
237 
ment black, second segment with a few black hairs above, basal 
portion of the third segment angulate above, widest at first third 
of its length and gradually narrowing to the beginning of the 
annulate portion; subcallus covered with gray pollen, front rather 
narrow, narrowest before; frontal callosity dark brown, occupy- 
ing the whole width of the front, nearly square and connected 
aljove with a narrow line which reaches half way to the vertex; 
an indication of an ocelligerous tubercle. Usual parts of front 
covered with gray pollen. Face and cheeks covered with gray 
pollen, beard white, palpi yellowish with short white hairs. Pro- 
boscis shorter than the length of the head. Thorax fuscous with 
the usual grav stripe, sides and sternum covered with white hairs. 
Upper side of front femora, apex of each front tibiae, front tarsi 
and last three or four segments of other tarsi fuscous, other parts 
of legs red. Wings hvaline, stigma and veins clear brown, ante- 
rior branch of the third vein with a stump. Abdomen light 
brown above with posterior borders of segments and mid dorsal 
row of triangles gray. On the sides of the segments and on the 
last three segments above there are indistinct fuscous areas, and 
in some specimens there are faint indications of lateral rows of 
small grayish spots. Venter red, darker, almost fuscous at apex. 
Specimens collected by Dr. R. E. Kunze in southeastern 
Arizona and by C. H. T. Townsend in Chihuahua, IMexico; the 
latter the property of the U. S. National Museum. I have 
received specimens of this species labelled ‘ ‘T. sodalis Williston.” 
Tabanus sodalis was described without locality but a study of the 
types convinces me that the name is synonymous with T. 
trispilus Wied. The specimen to which the name sodalis was 
originally given was taken in White Mountains, New Hampshire. 
The reddish or brownish color is characteristic of flavidus. 
Tabanus fratelUis Williston. Verv easily known from its 
resemblance to pumilus of the eastern states. The whole body 
is dark colored, the abdominal segments have narrow grav pos- 
terior margins, and on each side of segments 1-G is a similarly 
colored small round spot, which does not touch either margin. 
The basal part of the third antennal segment is narrower than in 
pumilus. Eyes naked. Length about 10 millimeters. 
i have received specimens of this species from Miss Ricardo 
who studied Bigot’s type, with the statement that they are iden- 
tical with the type of Bigot’s Diachlorus (?) haematopotides. 
The latter name is therefore a synonym of T. fratellus. 
Tabanus frenchii Marten. I have before me several speci- 
imens which agree with Marten’s description. This sjiecies with 
tetricus and susurus are described as having three rows of gray 
triangles on the abdomen and red antennae with apical part of 
third segment black, which is a combination not often met with, 
but is found in the specimens here considered. 
