1893.] MB. E. E. AXrSTEX 0?f NEW DIPTEKOFS IlfSECTS. 153 



base, and with the band across the middle about twice as broad ; 

 third segment with a distinct narrow ochreous band across the 

 base, widest in the middle and notched in the median line, tapering 

 towards the sides (in the second specimen in the collection this 

 band is merely represented b}' a faint line, but the specimen may 

 have been captured very soon after it emerged), and \\ ith the main 

 transverse band much broader ; fourth segment with the " limate " 

 marks represented by two stripes running straiglit from the front 

 to the hind margin ; each of these sends off a narrow oblique mark 

 from near its base towards the lateral margin, as do the corre- 

 sponding marks in the 5 > ^^id from its extreme base a narrow 

 line runs to the lateral margin, along the base of tlie segment ; 

 fifth segment with a straight stripe running from the front to the 

 hind margin on each side of the median line, and connected 

 together posteriorly, but apparently with no trace of the small 

 basal triangles : the lerfs are prder yellon', but the brown markings 

 on the posterior pair and the posterior tarsi just as in the $ . 

 The (mtenmc are orange, short, the thuxl joint rounded, and the 

 second and third joints and the tip of the first narrowly dark 

 brown above ; the arista dark brow n ; tlic shining black spot above 

 the antennae narrower than in the $ ; the front is clothed w ith 

 short dark pile. The alulce and the shcq^ of the ahiJomen as in the 

 $ ; genitalia ochraceous. 

 Brazil, Villa Nova and Santarem (Bates) : two specimens. 



Baccha tlate^s, sp. n. (Plate Y. fig. 10, $ .) 



$ . Length 124 mm. 



Yellow, nearhj hare ; dorsum of the thorax, except the sides, shiniin/ 

 oranr/e-rufous, ivith two ahhreviated pale yelloiv stripes, which are 

 clothed with shimmering whitish pollen : ahdomen deep chronie-yelloiv, 

 u'ith narroiv ■•'hiniwf hroicn transverse bands and lineate marlcings ; 

 broad, flat, not contracted hasalhj, but expanding regularly to the end 

 of the fourth segment. Legs wholly yelloiv. Wings ivith an ochra- 

 ceous tinge, strongest towards the anterior margin : alulee rudimentary. 



Face and cheeJcs pale yellow, shining, except the facial tubercle, 

 vi'hich is dull. Front somewhat deeper yellow, dull, the posterior 

 fifth dark olivaceous ; the slight antenniferous projection sbiniug, 

 pale yellow on the sides ; a conspicuous shining black dot above 

 the base of the antennae ; above this is a small brow n blotch, from 

 which a faint rufous median stripe runs back to the vertex. First 

 two joints of the antennte ochreous ; the third is missing. The 

 yellowish shimmering pollinose stripes of the dorsum of the thorax 

 only extend about two-thirds of its length, and divide the orange- 

 rufous area into a median and two lateral stripes, w hich are all of 

 equal breadth and coalesce posteriorly ; the sides of the dorsum, 

 pleurae, pectus, and metanotum metallic yellow : scuteUum dull, 

 tawny ochraceous, orange-ochraceous at the base. Abdomen : first 

 segment pale yellow, shining, with a narrow faint brownish band 

 occupying the median two-fourths of the hind border ; second seg- 

 ment with a straight brown transverse band occupying about the 



