118 



Genus HOUGHIA, new genus. 



The characters of this genus may be gleaned from the table of genera 

 given on previous pages, and the following description of the type spe- 

 cies: Black, the palpi and apex of proboscis yellow; front of female 

 five-sixths as wide as either eye, frontal bristles descending almost to 

 middle of second antennal joint, two pairs of orbital bristles and two 

 pairs of backwardly curving macrochiTette outside of the frontal bris 

 ties, cheeks one-twelfth as broad as the eye-height, four or five bristles 

 above each vibrissfe, antenuii^ almost as long as the face, the third 

 joint from four to five times as long as the second, arista thickened on 

 the basal two-fifths, the joenultimate joint broader than long; thorax 

 gray pollinose, marked with four black vittie, four postsutural and 

 three sternopleural macroch;i?tiie, scutellum bearing three long mar- 

 ginal pairs and a very short apical pair; abdomen shining, the last 

 three segments except their apices whitish pollinose, each segment 

 bearing marginal macrochiii'tiTe ; middle tibia^ each bearing a single 

 macrocha'ta on the front side near the middle, hind tibi;e outwardly 

 subciliate; wings hyaline, first vein bristly except on its base and 

 apex, third vein bristly almost to the small crossvein, hind crossvem at 

 last third of distance from the small to the bend of the fourth, the lat- 

 ter not appendiculate, calypteres whitish; length, G to 7 mm. Tifton, 

 Ga. Two females collected June and September 1, 189G, by Mr. G. E. 

 Pilate, and transmitted by Dr. Garry delST. Houuh, after whom the genus 

 is named. Type No. 3623, U. S. National Museum setipennis u. sp. 



Genus TACHINA Meig. 



Tacliina Meigen, in Uliger's Magaziu fiir Insektenkuude, Vol. II, p. 280; 1803. 

 Eutachwa Brauer and Bergenstamm, Zweif. Kais. Mus. Wien, IV, p. 98; 1889. 

 Cha'totachina Brauer aud Bergeustamm, loc. cit. 

 Tachinomiiia Townseud, Trans. Amer. Ent. Soc, Vol. XIX, p. 96; April, 1892. 



Eutachina was proposed for Tachina under the mistaken idea that 

 the latter is identical with the genus Echinomyia. Chirto tachina is 

 given by its authors as a subgenus of Eutachina.' The synonymy of 

 Tachinomyia is by the writer and is based on a cotype specimen of the 

 type species. Our species have three sternopleural macroch?etiTe, and 

 two or more on the front side of each middle tibia near the middle: 

 1. Apices of last three segments of abdomen shining black, tip of abdo- 

 men black, genitalia not or only slightly projecting beyond the 

 tip of the fi^UVth segment, frontal bristles desceudiug on sides 

 of face ncRrlj^j^alfway to the vibrissie, facial ridges bristly 



almost to the lowest frontal l)ristles 2. 



Apices of last three segments of abdomen usually opaque gray 

 pollinose, apex of scutellum and of abdomen usually yellow, 

 genitalia of male projecting more than half tbe length of the 



'Zweif. Kais. Mus. Wien, VI, p. 125; 1893. 



