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 w4th gray pollen, front rather 

 narrow, narrowest before; frontal callosity dark brown, occupy- 

 ing the whole width of the front, nearly square and connected 

 above w4th a narrow line wdiich 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 gray stripe, sides and sternvim covered with white hairs. 

 Upper side of front femora, apex of each front tibise, front tarsi 

 and last three or four segments of other tarsi fuscous, other parts 

 of legs red. Wings hyaline, 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 row^s 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, Mexico; 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 studv 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 fratelhis Williston. Very 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 1-6 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. 



1 have received specimens of this species from Miss Ricardo 

 who studied Bigot's type, wath the statement that they are iden- 

 tical with the type of Bigot's Diachlorus (?) haematopotides. 

 The latter name is therefore a synonym of T. fratelkts. 



Tabanus frenchii ^klarten. I have before me several speci- 

 imens which agree with Marten's description. This species with 

 tetricus and susurus are described as having three rows of gray 

 triangles on the abdomen and red antennse with apical part of 

 third segment black, which is a combination not often met with, 

 but is found in the specimens here considered. 



