7. PTIOLINA 



311 



pubescence ; frons small, blackish, quite bare. Palpi produced, almost as long 

 as the proboscis, not at all dilated towards the tip, blackish brown, and bearing 

 rather long blackish bristly pubescence. Eyes touching for less than half the 

 distance between the occiput and the antenna? ; facets on about the lower 

 ■ third most conspicuously smaller than those on the upper two-thirds and so 

 sharply differentiated that the lower part of the eye is sunken as against the 

 part with the enlarged facets. Antemiie (fig. 200) blackish brown ; basal 

 joints short and bearing short inconspicuous bristles ; third joint evenly short 



Fig. 20'2. — Ptiolina obsmra 9. x 13. 



Fig. 203. — Ptiolina ohsciira. 



Fig. 204. — Ptiolina obscura. 



Fig. 2Qb.^Ptiolina oiicura. 



Fig. 206. — Ptiolina obscura. 



ovate with an almost terminal coarse style which is about as long as the third 

 joint itself ; this style is rather thick but tapers a little from its base to its tip. 



Thorax black with a faint gloss, and absolutely without stripes ; 

 pubescence moderately long and abundant, blackish brown, and all almost 

 equal as there are no conspicuous setee or lines of bristles ; pleune chocolate 

 brown, quite bare. 8cutellum similar to the thorax, but with the marginal 

 ciliation slightly longer. 



Abdomen of the same black colour and the same slight gloss as the 

 thorax ; pubescence moderate, equal, rather inconspicuous, more recumbent 

 on the disc, and all blackish. Belly brownish black, with very short 

 inconspicuous pubescence. Genitalia blunt, very slightly longer and broader 

 than the seventh abdominal segment, and with some obscure blunt lamella?. 



Legs dull blackish brown ; anterior pairs almost bare, especially on the 

 tibiaj, but with a slight ciliation beneath the femora ; hind femora with a 

 ciliation beneath, and the hind tibice with a short rather inconspicuous dorsal 

 (and still shorter ventral) ciliation ; front tarsi with obvious (about six) 

 "touch-hairs" beneath extending all along the basal joint and about the ends 

 of the next three joints. Pulvilli obscure orange. 



Wings with a strong smoky blackish tinge ; stigma brownish black, large 

 and long ; the two upper veinlets issuing from the discal cell closely 

 approximated at their base (figs. 202, 203), or with a very short united 

 stem (fig. 204), or with a long stem (fig. 205), or even occasionally in one 

 wing only of a specimen the fork may appear to commence back in the discal 

 cell (fig. 206). Squamai (alar) smoky brownish with a darker margin on which 



