OF THE TABANID.^ OF THE UNITED STATES. 457 



dorsal surface of the three last segments. Legs yellowish red ; front tarsi brownish. 

 Wings strongly infuscated; a distinct brown cloud on the bifurcation of the third vein, a 

 very faint one on the crossvein at the base of the second posterior cell. Length, about 

 23 mm. 



Hah. Savannah, Georgia (Wiedemann) ; Florida (Lake Harney, May 4, Messrs. Hub- 

 bard and Schwarz) ; S. Carolina (Sea Islands, June 2, B. P. Mann). I have four females. 



The cloud on the bifurcation of the third vein is not mentioned by Wiedemann ; it nev- 

 ertheless exists in his original specimen in the Vienna Museum (as Dr. Eedtenbacher kindly 

 informs me). The eyes of this species (as I saw them on an alcoholic specimen) have three 

 narrow bluish stripes, not reaching the external border ; the gi'ound color of the eye was 

 reddish green. 



35. Tabanus Megerlei. 



Tahanus Megerlei Wiedcm.inn, Aus. Z\v., I, p. 132, 3'2. 



Female. [Antennte l)rown, root of the third joint ferriiginous yellow, with a strong 

 tooth ; face brown, somewhat yellowish on the sides ; cheeks and palpi bi'own ; beard black ; 

 front yellowish white below, lighter in the middle, the upper part yellowish.] Callosity 

 nearly square, brown or black, convex. Thorax blackish, reddish on each side, with whit- 

 ish lines on the dorsum ; pleural brown, with black hair. Abdomen reddish, with a broad 

 black stripe in the middle, which is somewhat narrower on the second and third segments ; 

 a whitish pollen and a golden yellow pubescence clothe the red portions of the abdomen ; 

 lateral margins blackish, fringed with black hair. Venter reddish. Wings brownish on 

 the proximal half, especially along the veins ; crossveins and bifurcation of the third vein 

 with dark brown clouds. Length, 17-18 mm. 



Hah. Florida (caught by myself on St. John's River in March, 18-58). A single female. 



T. MerjerJei is described by Wiedemann without indication of locality. My specimen 

 agrees perfectly with his description. At present this specimen is somewhat injured about 

 the head, so that I am compelled to translate from Wiedemann the portion of my descrip- 

 tion enclosed in brackets. The black frincce of hair alona; the edo;es of the otherwise red 

 abdomen of this species cannot well be mistaken. In the present condition of my speci- 

 men I cannot well ascertain whether its eyes are pubescent or fulvous, and whether it has 

 an ocellar tubercle or not. 



36. Tabanus americanus. 



Tabanus americanus Forster, Nov. Spec. Centur., I, 100. 

 Tabanus jybmiheus Dniry, Ins. I, Tab. 44, f. 2. 



Tabanus ruficornis Fabricius, Sjst. Eiit., p. 789, 8 ; Ent. Syst., IV, p. 365, 14 ; Syst. Antl., p. 96, 14. — 

 Wiedeninnn, Dipt. Exot., I, 62 ; Auss. Zw., I, p. 112, 1. 



Tabanus limbalus Palisot-Beauvois, Ins., Dipt. Tab. I, f. 2. 



Female. Dark violet brown (" obscure coccinelleus " of Wiedemann) sometimes more 

 reddish. Face grayish, with gray hair ; front grayish ; antennae red ; in some specimens 

 the annulate portion is brown ; third joint deej^ly excised ; its upper angle drawn out, as a 

 pointed horn ; frontal callus chestnut brown, prolonged in a line above ; palpi brownish red, 

 with dense, short black hairs. Thorax with a whitish efflorescence, hardly concealing the 

 dark ground color ; a tuft of white hairs between the root of the wings and the scutellum. 



USMOmS BOST. SOC. NAT. HIST. TOL. n. 115 



