INSECUTOR INSCITI^ MENSTRUUS 55 



postsuturals ; three lateral scutellars, of which the hind ones 

 reach to base of third segment; strong pair of discals, apical 

 decussate pair suberect. First segment with short erect median 

 marginal pair; second with weak median discal and long 

 median marginal pairs ; third with marginal row of long ones, 

 and sometimes weak discal; anal segment with discal row, 

 but only weaker ones between them and margin. Front claws 

 shortened, microscopic ; the front tarsal joints distinctly flat- 

 tened. Strong costal spine ; apical cell short-petiolate, ending 

 well before wing-tip ; hind crossvein a little nearer to cubitus, 

 which is far from margin and without appendage. 



Epidexia filamentosa Townsend. 



Length of body, 5.5 to 6 mm. ; of wing, 4 to 4.5 mm. Several 

 females. Ocean Beach, Miami, Florida (Townsend, vide 1. c). 



Head silvery, f rontalia brown ; first two antennal joints, base 

 of third and palpi light rufous. Parafrontals, occiput, thorax, 

 scutellum and abdomen ashy pollinose ; four subequal thoracic 

 vittae, the inner pair shorter; pollen of abdomen denser on 

 narrow bases of segments, anal segment light rufous. Legs 

 rufous, tarsi blackish. Wings slightly infuscate, tegulse white. 



Holotype, No. 19470, U. S. Nat. Mus., TD747. Paratype, 

 TD915. 



Masicera pulverea Coquillett, 1897, Rev. Tach. 114-115, 

 though of much stouter build, practically belongs to this genus. 

 The holotype is a male from Florida, and shows the following 

 characters: Vertex hardly over one-fifth of head-width, the 

 posterior third of front about same width ; face below about 

 one-half head-width. No proclinate fronto-orbitals, only one 

 reclinate. Third antennal joint about three times second, but 

 of same narrowed type as in the female. Palpi slightly thick- 

 ened at tip. Three sternopleurals ; discals on intermediate 

 abdominal segments. Form is rather broad, abdomen sub- 

 conical. Apical cell closed in border. 



A male from Tifton, Georgia, has the apical cell short-petio- 

 late, agreeing otherwise with the holotype. The claws are 

 long in both. 



