MASICERA INSIGNIS. 85 



on both sides in a single row till below the root of the 

 antennae ; focial ridges less prominent than in B. bifasciata, 

 beset with bristles, which ascend till the middle of the 

 face ; occiput with a dense grayish pilosity. Antennae black ; 

 the second joint rather short ; the third at least three times 

 as long as the second ; arista thickened on the basal half. 

 Palpi blackish brown , ferrugineous near the tip. Thorax 

 black, with a whitish dust anteriorly and an indication of 

 black longitudinal stripes; scutellum in cf piceous, in Q 

 obscure rufous. Abdomen black; the fourth segment whi- 

 tish, the anus black; macrochetae all recumbent, at the 

 hind-border of the third segment some of them thick and 

 spinous. Legs black , with numerous bristles ; on the under- 

 side of the front-femora and the outside of the front ti- 

 biae the bristles are regularly placed; at the outside of the 

 middle tibiae and the underside of the hind-femora some 

 bristles of particular length ; hind-tibiae with numerous brist- 

 les on the outside , which however not are placed frangelike. 

 Ungues ferrugineous with a black tip and in cT stouter 

 and surrounded by some bristles as is also the case with 

 the ochraceous pulvilli. Wings and calyptrae darkbrown; 

 the nervation agrees with that of B, bifasciata. 



A single pair from Brazil (Bescke). 



This species seems to be nearly allied to B. analis Macq. 

 (Dipt. ex. Supp. 1. 460. 2; pi. 14, f. 4), which is however 

 smaller and in which the basal joints of the antennae are 

 testaceous. 



18. Masicera insignis , n. sp. 



Cinerea ; antennis , striis thoracis quatuor , abdominis 

 segmento primo, segmentorum 2 — 4 limbo postico, linea 

 dorsali pedibusque nigris ; palpis testaceis ; thoracis stria 

 media et scutelli apice rufescentibus ; abdominis segmento 

 ultimo limbo antico flavo. — cf long. 8.5 mm. 



On account of the naked eyes , the absence of bristles 

 along the facial ridges, the situation of the oral bristles just 



Notes from, the Leyden IMuseixm, Vol. IV, 



