1S93.] MR. E. E. AUSIEy ox NEW DIPTEROUS IX.SKCTS. KJl 



portion of the spurious vein is bright oiihreous, tinging the ad- 

 joining portion of the wing; the Itink in the third vein is iingnhar, 

 and situated shghtly before the middie of the first posterior cell. 



Brazil, region of the Amazons (Bates) : iive specimens. 



This species is closely allied to Salpiiuioiiaster pyrjophora, Schin., 

 but differs from it in the colour of the sides of the thorax and in 

 that of the scutellum. In the colour of the scutellum and the 

 markings of the dorsum of tlie thorax it agrees with Salpingo- 

 (jastcr nigra, Schin., but differs from that species in the face being 

 wholly yellow, as also in the colour of the sides of tlie thorax, of 

 the femora, and of the tibi;\!, and in the peculiar shape of the 

 external genitalia of the S , in which it agrees with S. puijnphora. 



Salpingogaster mixor, sp. n. (Plate V. tig. 4, $ .) 



$ . Length 12 mm. 



Thorau' ochraccoas above, dull, with three dull hluck stripes ; 

 pleurje shining ochre-yellow, a narrow broivn stripe runnimj frou 

 the base of the unar/s to the middle coxce, and an indication of a 

 broader and darker but shorter one on each side of the meta- 

 notum ; the metanotum not infuscated ; scutellum yellow, the disc 

 brown ; abdomen ochraceous, base of first segment yellow ; second 

 segment \\-ith a faint reddish-bro\\'n band on the basal third ; the 

 central portion of the fourth, fifth, and sixth segments, and 

 of the posterior half of the third, dark brown ; the darker area is, 

 however, not sharply defined, and may be due to drying or to 

 matter contained in the abdomen. W'iwjs wifh an ochraceous 

 tinge, which is deeper in the costal cell ; subcostal cell tawny, 

 the marginal cell, the distal third of the submarginal, the space 

 between the kink in the third vein and the terminal portion 

 of the fourth vein closing the first posterior cell, as well as the 

 sjiace outside this and outside the discal cell, brownish ; the basal 

 iialf of the spurious vein ochre-yellow, tinging the adjoining por- 

 tion of the wing ; the kink in the third vein rounder than in aS. 

 virr/afa, and situated slightly beyond the middle of the first posterior 

 cell ; the p)OSterior cross-vein nearly straight : alidai rudimentary. 

 Ler/s pale yellow, the posterior femora and tarsi ochraceous ; none 

 of the femora are grooved beneath, hat the posterior pair have a 

 double row of short thin spines underneath towards the tips ; the 

 middle femora have no angular process at the tip beneath. 



The head is considerably flattened anfero-posteriorly ; face and 

 cheehs wholly pale yellow, shining, facial tubercle small, sharp ; 

 proboscis ochraceous; antenniferous projection well-n)arked, sliining 

 black oji the sides and above ; the ])Os1-erior tliird of the front, 

 including the ocelli, which are rcmoie from the vertex, shining 

 black ; the antenniferous process is connected with this ])y a 

 I riangular patch, the base of which, resting on the antenniferous 

 process, as well as a narrow median lino, is melallic black, the rest 

 dead black ; on each side of the front below the ocelli is a narrow 

 yellow stripe, running into the yellow of the face ; antennir ochra- 



Puor. ZooL. .Sue— 181)3, No. XI. 11 



