166 ME. WALKEK ON DIPTEEA COLLECTED AT MAKE3SAK. 



5th segment with a black dot on each side ; wings pale cinereous, 

 tinged with yellow ; veins yellow ; discal transverse vein straight, 

 oblique, parted by hardly more than one-fourth of its length from the 

 border, and by more than its length from the prsebrachial transverse. 

 Length of the body 5 lines ; of the wings 10 lines. 



219. PsiLA MUNDA, n. s. Mas et Fam. Nigra, nitens, facie testacea 

 nigro notata, antennis testaceis basi nigris, arista plumosa, thorace 

 subcinerascente, scutello obscure testaceo, pedibus testaceis, alis cine- 

 reis apud costam nigricantibus, halteribus albidis. 



Male and Female. Black, shining ; head testaceous, blackish above ; 

 disk of the face black, shining : antennae short, testaceous, black at 

 the base ; 3rd joint linear, rounded at the tip, about twice the length 

 of the 2nd ; arista plumose : thorax linear, with slight cinereous 

 tomentum ; scutellum dull testaceous ; abdomen fusiform, a little 

 longer than the thorax ; legs testaceous ; wings grey, blackish along 

 the costa towards the tips ; veins black ; discal transverse vein straight, 

 upright, parted by about half its length from the border, and by 

 nearly thrice its length from the praebrachial transverse ; halteres 

 whitish. Length of the body 2^-3 lines ; of the wings 4-5 lines. 



Gen. Texa-BA, Walk. 



220. Texara dioctrioides, n. s. Mas et Foem. Nigra, longa, gra- 

 cilis, capite nigro-cyaneo, thorace vittis quatuor cinereis, segmen- 

 torum abdominalium lateribus albo marginatis, pedibus fulvo fasciatis, 

 alis cinereis, halteribus testaceis. 



Male and Female. Black, long, slender ; head bluish-black, white about 

 the eyes in front ; antennae of the male piceous, of the female tawny, 

 3rd joint round, arista minutely pubescent; thorax with four cine- 

 reous stripes ; abdomen about twice the length of the thorax, cylin- 

 drical towards the base, subclavate in the male and elongate-fusiform 

 in the female hindward : hind borders of the segments white on each 

 side ; fore femora, hind tibiae and hind tarsi tawny at the base ; mid- 

 dle legs and hind femora tawny, the latter with a broad black band ; 

 fore tibiae white, black at the base ; wings grey ; veins black ; discal 

 transverse vein straight, upright, parted by less than its length from 

 the border, and by almost four times its length from the praebrachial 

 transverse ; halteres testaceous. Length of the body 4-4i lines ; of 

 the wings 6-7 lines. 



Gen. GoBBTA, n. g. 



Mas. Corpus gracillimum. Caput thorace multo latius; frons sat an- 

 gusta; facies plana. Oculi magni. Antennce hrexisshme ; articulus 

 3"* conicus ; arista pubescens. Thorax sat parvus. Abdomen cylin- 

 dricum, gracillimum, apice clavatum, thorace duplo longius. Pedes 

 graciles ; anteriores breves ; postici longiuscuh. Alee perangustae. 



