MB. WALKER ON DTPTEBA COLLECTED AT MAKESSAE, 109 



genubus tarsisque nigris, alls cinereis apice obscurioribus, halteribus 

 testaceis. 

 Female. Cinereous ; head silvery white in front ; epistoma very slightly 

 prominent ; mystax with some white bristles, and above with very few 

 black bristles : autennse testaceous ; 3rd joint conical, much shorter 

 than the 1st joint, and not more than one-fourth of the length of the 

 arista : thorax with two brownish stripes : abdomen dark cinereous ; 

 hind borders of the segments testaceous : legs tawny ; tarsi, except at 

 the base and knees, black : wings cinereous, dark cinereous towards 

 the tips ; veins black, tawny towards the base ; halteres testaceous. 

 Length of the body 8 lines ; of the wings 14 lines. 



Gen. Ommatius, llliger. 



54. Ommatius scitulus, n. s. Mas et Fam. Fulvus, gracilis, capite 

 cinereo antice albo, antennis nigris basi fulvis, thoracis disco cinereo- 

 nigro, pectore testaceo, abdominis segmentis pallido marginatis, alis 

 cinereis, halteribus testaceis. 



Male and Female. Tawny, slender ; head cinereous above, white in 

 front ; mystax with several white bristles ; antennae black, tawny 

 towards the base. 3rd joint lanceolate, arista not longer than the 3rd 

 joint ; disk of the thorax cinereous black ; pectus testaceous ; hind 

 borders of the abdominal segments pale ; tarsi black towards the tips ; 

 wings cinereous ; veins black, tawny towards the base ; halteres tes- 

 taceous. Length of the body 6-7 lines ; of the wings 11-12 lines. 



55. Ommatius strictus, n. s. Mas. Niger, angustus, capite argen- 

 teo, pectore albido- cinereo, abdomine fusco maculis trigonis nigris, 

 segmentis albido marginatis, pedibus fulvis, genibus tarsisque nigris, 

 alis subcinereis extus nigricantibus, halteribus testaceis. 



Male. Black, narrow ; head silvery white in front ; mystax with very 

 few white bristles ; third joint of the antennae elongate-conical ; arista 

 a little longer than all the preceding joints together ; pectus whitish 

 cinereous ; abdomen brown, each segment with a black triangular 

 spot and with a whitish hind border ; legs tawny ; knees and tarsi 

 black, the latter tawny at the base ; wings greyish, exterior half 

 blackish; veins black; halteres testaceous. Length of the body 4-4 i 

 lines ; of the wings 7-ii lines. 



Gen. Leptogastee, Meigen. 



56. Leptogaster munda, n. s. Mas. Cinerea, capite argenteo, pro- 

 boscide antennisque fulvis, thorace lineis duabus fuscis, abdomine 

 longo gracili apicem versus subdilatato, segraentorum marginibus ma- 

 culisque quatuor subapicalibus testaceis, pedibus fulvis, femoribus 

 tibiisque posticis nigro fasciatis, alis subcinereis, halteribus testaceis. 



Male. Cinereous; head silvery white; proboscis and antennae tawny; 

 thorax with two brown lines ; abdomen long, slender, slightly dilated 



