OF THE TABANIDJ5 OF THE UNITED STATES. 381 



Female. Facial callosities and cheeks black, the upper part of the former somewhat 

 brownish ; middle portion of the face dark ferruginous ; the usual pollen on the face and 

 around the black frontal callosity, gray. Antennaj black, first joint pale reddish. Thorax 

 with a broad glaucous middle stripe, divided longitudinally l)y a black line ; grayish glau- 

 cous lateral stripes ; pleurae likewise grayish-glaucous, with the usual blackish stripes. The 

 first two abdominal segments are pale yellow on the sides ; the black on the first segment 

 occupies the whole base of the segment (and not the middle only, as in C. caUidus); the 

 A -shaped black spot on the second segment is rather broad in its outline, and its ends, pro- 

 longed along the hind margin, are as broad as the main body of the figure (in C. callldus 

 they are usually narrower) ; they do not roach the lateral margin ; the yellow triangle en- 

 closed in the A-shaped spot is somewhat smaller than in C. calUdiis. The other aljdominal 

 segments are black, with narrow yellowish-gray margins, two or three of which expand into 

 triangles. Legs black ; base of front tibins, the major part of the middle tibiae and roots of 

 the four posterior tarsi reddish-brown. Wings : costal cell, crossband and a narrow costal 

 border beyond, brown ; the crossband is rather narrow and attenuated posteriorly ; its distal 

 margin is very straight ; its proximal side does not fill out the proximal half of the discal 

 cell, which is hyaline ; a part of the fourth posterior cell is also hyaline ; a bi-own cloud on the 

 last section of the fifth vein ; otherwise the fifth posterior cell likewise hyaline ; the brown 

 border along the costa, between the crossband and the apex, is but little broader than the 

 infuscated costal cell between the crossband and the root of the wing, and is narrowed at its 

 origin from the crossband, where a subh}-aline indentation almost severs it from the cross- 

 band the fifth longitudinal vein before the crossvein is yellow. 



Hah. North Conway, N. H., where I caught two females of this handsome species in 

 the middle of August, 1874. 



Tlie smaller size, the coloring of the f;xce and the peculiar picture of the wings easily dis- 

 tinguish this species from the two preceding ones. 



11. Chiysop.s pudiciis n. sp. 



2 . Apical spot connccte;! with tlie crossband, the hyaline triangle between them not crossing the second 

 longitudinal vein: the apical spot invades but a small portion of the second submarginal cell; both basal 

 cells, (except .at their extreme proximal end), hyaline ; frontal callosity reddish ; first and second abdominal 

 segments yellow on the sides; the black on the second segment A-^haj)ed. 



Length, 8 mm. 



Female. Face, including the callosities, yellowish-ferruginous ; palpi reddish-yellow ; 

 antennaa : first two joints and base of third reddish, the remainder black ; front with a 

 grayish pollen ; frontal callosity reddish, usually with a black margin aljove. Thorax with 

 the usual stripes, glaucous above, grayish-j^ellow on the pleura). Abdomen : two first seg- 

 ments yellow ; the first with a black spot in the middle, the second Avitli a stout A-shaped 

 black spot, not confluent with the first ; in some specimens the ends of the A-shaped spot 

 reach the hind margin of the second segment and expand beside it, in others they 

 are separated from the margin by a yellow border. The third and fourth segments are 

 yellow, with a large transverse black spot in the middle, encroached upon by the triangular 

 enlargement of the yellow hind margin ; the relative extent of the black and the yellow 



MEMOIRS BOST. SOC. XAT. HIST. VOL. II. 93 



