OF THE TABANID.E OF THE UNITED STATES. 383 



meat ; four Ijlack longitudinal stripes are thus formed, interrupted only Ijj- the very narrow 

 posterior margins ; these stripes are also continued on the fifth segment, but the black here 

 prevails to such a degree that only faint traces of yellow are left between the black spots ; 

 the fifth segment thus appears nearly black or Ijrown, with a yellow, more or less jagged, 

 posterior margin ; the same may be said of the sixth segment. '\"enter yellow ; seo-ments 

 3 and 4 with black lines on the sides ; the last segments Ijlackish, with yellow margins. 

 Legs reddish ; the front pair has the second half of tibia\ and the whole tarsi, the middle 

 pair has the coxa;, root of femora, knees and tips of tarsi, the liind pair the femora, except 

 a pale ring before the knees, the latter part of the tibia? and the tips of tarsi, black ; hind 

 tibiie beset with black hairs. "Wings : both basal cells hyaline, the brown color not occupy- 

 ing more than one-third of the first basal cell and hardly encroaching upon the second ; 

 cvossband fdling out the fourth posterior cell : the l>rown cloud, enveloping the last section 

 of the lifth vein, communicates more or less Avith the crossljand across the fifth posterior 

 cell ; the hyaline triangle between the crossband and the apical spot does not cross over 

 the second longitudinal vein, although opposite its apex, at the end of the stigma, a small 

 subhyaline dot is visible ; the apical spot is like that of the preceding species, only it occu- 

 pies a larger portion of the second submarginal cell. 



Hah. Catskill Mountain House, N. Y., Julv, 1874. Two females; a third one, from Oo-le 

 Co., Illin., has the yellow on the abdomen more extensive in comparison to the black ; on 

 the legs, the red prevails to a greater extent, the hind femora being of tliat color. There 

 is hardly anj- dillerence between this .species and C. inuJkus in the coloring of the wings, 

 except that the apical spot is somewhat larger. 



13. Clirysops Indus n. sp. 



?. Tiic .aiiic:il spot fills out tlic ninriiin:il niul first subiiiarginal colls and invades .1 portion of the second 

 Bubmarginal; the crossband does not quite reach the jiosterior margin, but expands somewhat towards the anal 

 angle; first basal cell almost filled out with brown, the second infnseate<l at the proximal end only. Face and 

 facial callosities ferruginous; abdomen wltii yellow sides and yellow triangles in the middle. 

 Length, 8-10 mm. 



Female. Face, including the cheeks, altogether ferruginous ; only the pits existing 

 under the facial callosities arc brown ; the stripes of pollen, separating the cheeks, and 

 clothing the facial orbit, are ftilvous ; frontal callosity and space aroinid the ocelli, black ; 

 pollen on the front, graj-ish. Antenna^ : first joint red, the second and base of the third 

 more or less tinged with reddish, the remainder black. Tltorax black, with the usual 

 stripes : a grayish median stripe, margined with more distinct gray lines on each side and 

 with a blackish longitudinal line iit the middle ; a pair of greenish-yellow lateral stripes, 

 passing above the root of the wings ; a broad brown stripe between the root of the wings 

 and the htnnerus ; pleura? yellowish-gra}-, Avith yellowish hairs and a brown stripe in the 

 middle. Abdomen yellow ; first and second segments each with a square black spot in the 

 middle, coalescent along the hind margin of the first segment ; the sjiot on the second seg- 

 ment bears, on the hind margin, a large yellow triangle (a faint trace of a similar, but much 

 smaller, triangle, is percej^tible on the black spot of the first segment) ; the third and 

 fourth segments arc black, each with a narrow posterior margin, broad lateral margins, and 



