of the Family Tabanidse. 361 



S. dives, 5, Walker, T.ist Dipt. i. p. 1G6 (1843) {Tahnnus). —Xiwazows. 

 S. bicolor, 2 , ]}ijrot, Mt^m. Soc. Zool. Fr. v. p. 636 (1892).— Brazil. 

 S. pachycejphalum, S > Bigot, /. c. p. 636. — Mexico. 



1. Black species. Abdomen yellow at base . 2. 

 Black species, with the first two segments 



yellow at the sides bicolor, $ , Bigot. 



Species with black abdomen, the posterior 



borders of segments white-haired fulvohirtum, $ , Wiedem. 



Species with red-brown abdomen, the pos- 

 terior borders of segments bright yellow- 

 haired dives, 2 , Walker. 



2. Wings black, lighter at apex theotcenia, 5 , Wiedem. 



Wings yellow, smoky grey at apex trisfis, $ , Wiedem. 



Wings clear, with two brown bands .... pachycephahim, cf , Bigot. 



Stibasoma dives, ? , Walker, 



Type ? , no locality given, and another female from 

 Amazons (Bates), 66. 53. 



A large-bodied species, distinguished by the bright yellow 

 hairs on the hind borders of the segments. The type has 

 lost its head, but there is no doubt of the identity of the 

 other perfect specimen with it. 



Face black, with black pubescence ; the palpi and antennne 

 black, the latter with the long horn on the first ring of the 

 third joint, and the short four remaining rings ending in a 

 point ; forehead black, narrow. Thorax and scutellura brown, 

 with black pubescence on the dorsum and at the sides. 

 Abdomen reddish brown with ferruginous pubescence, the 

 hind border of each segment fringed with bright yellow hairs ; 

 underside of abdomen brown with the yellow bands distinct. 

 Legs black with black pubescence, which becomes fringe-like 

 on the fore and hind tibiae. Wings grey, yellow at the base 

 and on the fore border, with yellow veins. 



Length 18 mm. 



Stibasoma fulvohirtum, ? , Wiedem. 



Tabanus compactum, 5 , Walker. 



Type of T. compactum, ? , Wlk., from Ega, Amazons 

 (Bates), 51. 43, and another female specimen from Panama 

 (Champiwi) , Biol. Centr.-Am. Coll. 



The remarks by Schiner and Osten Sacken amending the 

 original description certainly apply to the two specimens 

 mentioned above. 



Stibasoma pachycephalum, ^ , Bigot. 



Two males [not females as stated by the author) from 

 Mexico. 



Ann, & Mag. N. Hist. Ser. 7. Vol. xiv. 25 



