442 C. R. OSTEN SACKEN'S PRODROME 



less brownish at base ; the legs are clothed with whitish hairs, especially on the til)ia) ; but 

 they appear to have tliat color in a certain light only. Wings grayish subhyaline ; stigma 

 brown; first posterior cell not coarctate. Length, 13-14 nun. 



As the description shows, this species very much resembles T. melanocerus ; it diflers 

 principally in its smaller size, the much darker coloring of the tibiae, and especially in the 

 fii-st posterior cell not Ix'ing coarctate at all. The eyes in tLis species, as in the preceding, 

 are miiformly colored in life, and not banded. 



Male. Altogether brownish ; thorax with a Ijroad stripe of grayish pollen anteriorly, 

 which is darker in the middle (thus producing the appearance of two stripes, separated by 

 a dark interval); abdomen with rather narrow whitish gray posterior borders on the seg- 

 ments, exjianded into small triangles in the middle ; on the venter the same v.diitish hind 

 borders of the segments ; pleuraj clothed with blackish hair ; legs dark brown, tibice faintly 

 reddish. Wings nearly hyaline, stigma brownish ; sometimes a faint brownish cloud behind 

 it. Head large ; subhemispherical ; in dry specimens the lower, small facets are black, the 

 upper ones have a broad brown crossband on whitish ground. Antennae brown, third 

 joint reddish at the base ; lace brownish gray, beset with black hairs ; palpi black ; sub- 

 callus brown (denuded in both of my specimens). Length, 13-14 mm. 



Hah. District of Columbia; Delaware; New York; Florida (Waldo, Fla., 2d June, 

 1875, Messrs. Hubbard and Schwarz) ; one of the males is from Massachusetts. Ten fe- 

 males ; two males. 



I little doubt that the above described male and female belong to the same species, and 

 on this assumption I adopt the name coffeatus, as Macquart describes the male only. The 

 identification of his description seems certain to me. The words " partie anterieure du 

 front a callosite brune," are particulai'ly convincing. It is not usual to speak of the callos- 

 ity in describing a male specimen ; but in the present species the subcallus in both sexes 

 is often denuded, and for this reason attracted Macquart's attention. This circumstance 

 would also serve to confirm, if any confirmation were needed, the specific identity of the two 

 sexes. 



Wiedemann's description of T. nigi-ij^es (he also had a male specimen) agrees very well 

 with the male of T. coffeatus, only the size (7 German lines = about 15.3 mm.) is a little 

 too large. Between the two descriptions I preferred the one which I considered the more 

 certain. 



14. Tabanus Orion n. sp. 



Female. Palpi dark brownish red, clothed with short black hairs ; face yellowish white, 

 with yellowi.sh white hairs ; front whitish yellow above the antenna? ; brownish, mixed with 

 yellowish and grayish above the frontal callosity ; the latter longer than broad, attenuated 

 above and gradually merging in the linear prolongation ; its color, in all my specimens, is 

 brownish red. Antenna} reddish ; first joint with some black hairs above ; third joint, red 

 at the base only, otherwise black ; upper corner well marked. Thorax reddish brown, 

 clothed with a whitish pollen, forming more or less distinct whitish Hues (the appearance of 

 the thoracic dorsum is very variable in this species, according to the degree of preservation, 

 or perhaps also to the age of the specimen at the time of its death ; in well preserved spec- 



