48 DIPTEKA. 



darker ; the front and face beset with a scattered, erect, black pubescence ; eyes 

 pubescent ; ocelli distinct. Thoracic dorsum clothed with a dense brownish-ochraceous 

 pollen and with scattered, black, erect pile ; tufts of reddish-yellow pile above the root 

 of the wings and on the post-alar callosities ; pleurae and pectus greyish, with long 

 whitish hairs. Abdomen yellowish-rufous above, a little darker towards the end, with 

 some appressed hairs on the surface, partly black, partly rufous ; venter paler, yellowish. 

 Legs pale reddish ; tarsi brownish, except the base. Wings of a uniform pale brownish 

 tinge, a little more saturate towards the costa; submarginal cell not appendiculate, 

 although a little knot, as a rudiment of a stump, is sometimes visible ; first and fourth 

 posterior cells closed very near the margin. Three females. 



N.B. — I refer this species to Diclisa, on account of the closed first and fourth posterior 

 cells, and of the conical prolongation of the face. D. misera does not, however, show the 

 colouring of the thorax and abdomen which distinguish the other species of the genus. 

 The palpi are like those of Diclisa. 



TABANUS. 



Tabanus, Linne, Fauna Suecica, 1761. 



1. Tabanus (Therioplectes) quadripimctatus. 



Tabanus quadripunctatus (Fabr.), Wiedem. Aussereur. zweifl. Ins. i. p. 151; Schiner, Reise d. Novara, 



p. 86. 

 Tabanus nigro-punctatus , Bellardi, Saggio &c. i. p. 67, t. 2. f. 8 1 . 



Hab. Mexico, Cordova, Huastec (de Saussure x ) ; Guatemala, San Geronimo (Cham- 

 pion) ; Costa Rica, Rio Sucio (Sogers). — Beazil. 



I have shown in my Catal. N. A. Dipt. 1878, p. 57 and note 74, that this is a 

 Therioplectes. "Wiedemann describes the venter, " Brown with white incisures." It is 

 grey, with a longitudinal blackish band occupying about one third of the breadth. 



The male (hitherto not described) is very like the female; the head answers the 

 description of the head of Therioplectes given by me (cf. Prodr. of Tabanidse, p. 425, and 

 Western Dipt. p. 215) ; that is, it does not differ much in size and shape from the 

 head of the female, and the dividing-line between the large and small facets is rather 

 indistinct. 



2. Tabanus bigoti. 



Tabanus bigoti, Bellardi, Saggio &c. i. p. 58 \ 

 Tabanus apicalis, Macq. Dipt. Ex. Suppl. ii. p. 20. 

 Tabanus macquarti, Schiner, Reise d. Novara, p. 89 2 . 



Hob. Mexico l ; Nicaeagua, Chontales (Belt). — Colombia 2 . 



The descriptions by Macquart and Bellardi were drawn from the same example, 

 which was without head ; I will attempt to complete it from two very indifferently 

 preserved specimens: — 



