264 MR. walker's CATALOaUE or DIPTEROUS INSECTS 



taee nigro, antennarum articulo 2" rufo, thorace rufescente subtomeu- 

 toso, abdomine nigricante cupreo glauco-suffuso, pedibus rufis, femori- 

 bus nigris, alis luteis apice nigris, halteribus albidis. 

 Male. Black. Head with bright gilded hairs ; epistoma prominent ; 

 mystax with a few black bristles. Antenna? hardly longer than half 

 the breadth of the head; 2nd joint mostly red; 3rd linear, tapering 

 towards the tip. Thorax slightly covered with reddish tomentum, 

 which is divided by a slender stripe ; sides and hind border reddish. 

 Abdomen blackish cupreous, shining, with glaucous reflexions. Legs 

 reddish, robust, bristly ; coxa;, trochanters, and femora black. Wings 

 bright luteous, with black tips ; hind border blackish ; halteres whitish. 

 Length of the body 8-10 lines; of the wings 14-18 lines. 



4. Laphria Vulcanus, Wied (see Vol. L p. 10), var. Fcem. Nigra, 

 capite aurato, mystace nigro, pectoris lateribus aurato notatis, seg- 

 mentorum abdominalium marginibus posticis glaucescentibus utrinque 

 aurato maculatis, pedibus rufescentibus, alis nigricantibus, halteribus 

 albidis. 



Female. Black. Head with bright gilded tomentum and hairs; epi- 

 stoma prominent; mystax with some black bristles. Antenna; hardly 

 longer than half the breadth of the head ; 3rd joint linear, tapering 

 towards the tip. Sides of the pectus with patches of pale gilded 

 tomentum. Hind borders of the abdominal segments with a glaucous 

 tinge ; their sides with spots of gilded tomentum. Legs reddish ; 

 coxse and trochanters black. Wings blackish ; veins black ; halteres 

 whitish. Length of the body 9 lines ; of the wings 16 lines. 



5. Laphria obliquistriga, n. s. 3Ias. Nigra, capite argenteo, 

 mystace albo-nigro, thorace strigis duabus obliquis argenteis, abdo- 

 mine purpurascenti-cyaneo maculis duabus lateralibus argenteis, alis 

 nigris iridescentibus, halteribus albidis. 



Closely allied to L. scapularis. 



Male. Black. Head silvery white, with white hairs ; epistoma slightly 

 prominent ; mystax with white bristles and with a few longer black 

 bristles. Antennae hardly as long as half the breadth of the head ; 

 3rd joint elongate-fusiform. Thorax with an oblique silvery streak 

 on each side in front. Abdomen purplish blue, with a silvery spot 

 on each side of the hind border of the 4th segment. Legs purplish- 

 blue, robust, bristly ; fore tibiae and hind tarsi beneath with gilded 

 tomentum. Wings black, very iridescent; halteres whitish. Length 

 of the body 8 lines ; of the wings 16 lines. 



Subfam. Asilites, Walk. 

 Gen. Trfpanea, Maeq. 



6. Trupanea strenua. Walk. See Vol. IV. p. 106. Mas. Nigra, barba 

 flavescenti-alba, mystace nigro, abdomine fasciculis basalibus albis. 



