MALLOPHORA. 191 



Very like Nos. 2 & 3, and perhaps the other sex of one of them, the more so as the 

 locality for No. 3 is the same. It differs from both — (1) in the coloration of the hairs on 

 the hind legs : the femora being beset with long soft, erect yellow hairs, and having some 

 black hairs at the tip only ; the tibiae have on both sides a fringe of bright yellow, dense, 

 erect hairs, the hairs at the tip, however, black ; a similar yellow fringe reappearing 

 on the upperside of the tarsi ; and (2) in the coloration of the hairs on the venter, 

 the hairs here being altogether bright yellow. 



It differs from my No. 3 in having the veins of the wings stouter, as stout as in No. 2 

 (M. jpluto). The grey shadow in the submarginal cell is very faint. 



5. Mallophora fautrix, sp. n., <? $ . (Tab. III. fig. 14, ? .) 



Facial tubercle and cheeks clothed with rather long and dense yellow hair; the vertex, occiput, and even 

 the palpi, with similar hair ; the upper part of the face alone showing the black, shining ground-colour ; 

 basal joints of the antennae reddish, the third joint dark brown and with a brownish-yellow style of its 

 own length. Thorax black, the ground-colour not being perceptibly modified by the hairs ; some rare, 

 short, yellow hairs form an inconspicuous fringe in front ; some scattered hairs of the same colour on the 

 anterior portion of the dorsum, visible under the lens only ; the macrochsetse on the sides and in front of 

 the scutellum black ; scutellum densely beset with erect yellow hairs ; a fringe of yellow hairs between 

 the root of the wings and the hind coxae ; a few hairs of the same colour on the pleura, in front of the 

 mesopleural suture. Abdomen, above and below, densely clothed with a fur of erect yellow hairs ; on the 

 sides of the venter, especially at the base, the black ground-colour more distinctly visible (when the 

 abdomen is drawn out the ground-colour also becomes visible on the dorsal side, in the intervals of the basal 

 segments). Legs more or less dark chestnut-brown, beset with black hair ; a fringe of yellow hairs on the 

 front coxae, and tufts of similar hairs on the other coxae. Halteres brown. Wings tinged with yellowish- 

 brown, not dark ; a grey shadow in the proximal half of the submarginal cell ; a linear shadow within the 

 marginal cell. 



Male. Eorceps small, black ; some yellow hairs (which I do not perceive in the female) on the underside of the 

 hind tibiae and at the tip of the hind tarsi. 



Length <$ $ 15-18 millim. 



Eab. Mexico, Presidio (Forrer). 



Two males, three females. 



N.B. — In size and general colouring this species bears some resemblance to M. orcina, 

 but the yellow hairs of the body are of a duller yellow than in the latter species. 

 Moreover, in M. orcina the venter and the tip of the abdomen are beset with black 

 hairs, which is not the case in M. fautrix ; the brown of the wings in the latter is 

 lighter in tint, &c. 



The following other species of this genus have been described from Mexico and 

 Central America : — 



Mallophora craverii, Bellardi, Saggio &c. ii. p. 22. — Mexico, Oaxaca. 



rolusta, Macq. Dipt. Exot. Suppl. i. p. 78. 



fulviventris, Macq. 1. c. iv. p. 77 (the specimen described by Macq. is a 



" male," and not a " female " as stated in consequence of a misprint). 



fulvi-analis, Macq. 1. c. iv. p. 78 (" perhaps the female of the preceding, " 



Macq.). 

 pica, Macq. 1. c. iv. p. 78. 



