298 MK. walker's catalogue of dtpterous tnst:cts 



luteous, narrower than the thorax ; vertex and front reddish. An- 

 tennae pale luteous, shorter than the face ; 3rd joint linear, hlack 

 towards the tip, which is rounded ; arista puhescent. Thorax much 

 produced and attenuated in front ; scutellum truncated on the hind 

 border. Abdomen fusiform, narrower and a little longer than the 

 thorax, luteous beneath. Legs long, black, rather stout; femora 

 towards the base, and fore coxae, white. Wings brownish cinereous, 

 black along the basal part of the costa, blackish at the tips ; veins 

 black ; discal transverse vein hardly curved, parted by less than half 

 its length from the border, and by very much more than its length 

 from the prsebrachial transverse vein ; halteres black. Length of the 

 body 6 lines; of the wings 10 lines. 



Gren, Calobata, Fahr. 



97. Calobata stabilis, n. s. Fam. Cyanea, fronte atra, facie picea, 

 proboscide palpisque pallide flavis, antennis luteis, pedibus pallide 

 flavis, femoribus anticis apices versus tibiis anticis tibiis tarsisque pos- 

 terioribus piceis, femoribus posterioribus ])iceo trifasciatis, tarsis anticis 

 albis, alis subcinereis fascia apicibusque pallide fuscis. 



Female. Blue. Head silvery w hite about the eyes ; front deep black ; 

 face piceous. Proboscis and palpi pale yellow, darker at the tips. 

 Antennae luteous ; 3rd joint conical. Thorax with slig' t cinereous 

 tomentura; pectus more silvery. Abdomen slender, compressed, a 

 little longer than the thorax, and less than half its breadth. Legs 

 pale yellow ; fore femora piceous for half the length from the tips ; 

 posterior femora with three piceous bands ; posterior tibiae and tarsi 

 and fore tibiae piceous ; fore tarsi w hite, piceous towards the base. 

 Wings slightly cinereous, pale brown towards the tips, and with a pale 

 brown band beyond the middle ; veins black ; cubital and praebrachial 

 veins converging towards each other, nearh' contiguous at the tips of 

 the wings ; discal transverse vein straight, parted by half its length 

 from the border, and by full four times its length from the praebra- 

 chial transverse vein ; halteres black. Length of the body 5 lines ; 

 of the wings 8 lines. 



98. Calobata coarctata, n. s. Fam. Cinereo-nigra, gracihs, ca- 

 pite nigricauti-cyaneo, palpis antennisque nigris, arista nuda, pedibus 

 piceis, femoribus posterioribus fascia subapicali pallide flava, tarsis 

 albidis apice nigris, alis subcinereis nigricante trifasciatis, halteribus 

 albis apice nigris. 



Female. Cinereous black, slender. Head blackish-blue, whitish about 

 the eyes. Proboscis, palpi, and antennae black ; 3rd joint of the latter 

 conical ; arista simple, slender. Abdomen compressed, narrower and 

 very much longer than the thorax. Legs piceous, long, slender ; 

 posterior femora with a pale-yellow subapical band ; tarsi whitish, 

 with black tips. Wings narrow, slightly cinereous, blackish at their 



