442 C. R. OSTEN SACKEN'S PRODROME 



less bro'wnish at base ; the legs are clothed with whitish hairs, especially on the tibi» ; but 

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

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



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

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

 first 2:>osterior cell not being coarctate at all. The eyes in this species, as in the preceding, 

 are imiformly colored in life, and not banded. 



31ale. Altogether brownish ; thorax with a broad 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, expanded into small triangles in the middle ; on the venter the same v/hitish hind 

 borders of the segments ; pleuros clothed with blackish hair ; legs dark brown, tibia3 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 Avhitish ground. Antennae brown, third 

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

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



Hcib. 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 particularly convincing. It is not usual to speak of the callos- 

 ity in describing a male specimen ; but in the present species the suhcallus 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. nigr'q:>es (he also had a male specimen) agrees very weU 

 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 yellowish white hairs ; front whitish yellow above the antennte ; 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. Antennas reddish ; first joint with some black hairs above ; third joint, red 

 at the base only, otherwise black ; upper corner w^ell marked. Thorax reddish brown, 

 clothed with a whitish pollen, forming more or less distinct whitish lines (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- 



