272 MR. walker's catalogue of bipteeous insects 



above. AutemiiE nearly linear, much longer than the breadth of the 

 head; scape mostly tawny; flagellum longer than the scape. Thorax 

 with a cinereous stripe on each side. Tarsi whitish, with black tips. 

 Wings blackish ; veins black. Length of the body 31 lines ; of the 

 wings 6 lines, 



7. Salduba MELANARiA, U.S. Mos. Atra, graciUs, linearis, capita 

 producto, antennis linearibus vix arcuatis basi fulvis, scutelli margine 

 postico sulcato, tarsis posterioribus albidis, alis nigris. 



Male. Deep black, slender, linear. Head and eyes very flat above ; the 

 former produced into a short rostrum, on which the antenna? are seated. 

 Antenna; filiform, hardly curved, a little longer than the breadth of 

 the head ; scape tawny on the inner side at the base. Thorax elon- 

 gate ; scutcllum with a transverse fvn-row near the hind border. Ab- 

 domen hardly longer than the thorax. Posterior tarsi whitish, with 

 black tips. Wings and veins black. Length of the body 3 lines ; of 

 the wings .5 lines. 



8. Salduba scapularis, n. s. 3Ias. Atra, elongata, capite antico 

 producto, antennis compressis subarcuatis, flagello lanceolato, thorace 

 subpubescente, scutello dentibus quatuor ferrugineis, pedibus piceis, 

 tarsis posterioribus albidis, alis nigricantibus. 



Male. Deep black, elongate. Eyes flat and connected above. Au- 

 tennte compressed, slightly curved upward, seated on a protuberance 

 of the head, and a little shorter than its breadth ; flagellum lanceolate, 

 not longer than the scape. Thorax minutely pubescent ; humeral 

 angles acute ; scutellum armed with four minute ferruginous teeth. 

 Abdomen fusiform, a little longer and broader than the thorax. Legs 

 piceous ; posterior tarsi whitish, with piceous tips. Wings blackish ; 

 veins black ; halteres piceous. Length of the body 3 lines ; of the 

 wings 5 lines. 



9. Salduba singularis, u. s. Mas. Nigra, longa, gracilis, antennis 

 linearibus vix arcuatis, flagello basi rufo, thorace cinereo vittis duabus 

 nigris, scutello inermi, femoribus rufis, tarsis albis, femoribus posticis 

 incrassatis spinosis, alis nigricantibus. 



Male. Black, long, slender. Eyes connected above. Antennse com- 

 pressed, linear, hardly curved, much longer than the breadth of the 

 head ; flagellum red towards the base, about thrice the length of the 

 scape. Thorax with cinereous tomentum, which is interrupted by a 

 black stripe on each side; scutellum prominent, rounded, unarmed. 

 Abdomen deep black, cylindrical, nearly twice the length of the tho- 

 rax, shining and tumid at the tip. Femora mostly red; tarsi vihite, 

 \\ ith black tips ; hind femora incrassated, with minute spines beneath. 

 Wings blackish ; veins black. Length of the body 3-4 j lines ; of the 

 wings 5-S lines. 



