110 ME. WALKEE ON DIPTEEA COLLECTED AT MAKESSAE. 



towards the tip, hind borders of the segments testaceous, two tes- 

 taceous spots on each side towards the tip ; legs tawny, hind femora 

 and hind tibiae with a black band on each ; wings shghtly greyish ; 

 veins black, tawny at the base ; halteres testaceous. Length of the 

 body 6 lines ; of the wings 8 lines. 



Fam. LEPTID^, Westw. 

 Gren. Leptis, Fahr, 



57. Leptis ferruginosa, Wied. See Vol. I. p. 118. 



HeUomeia ferruginea, Dolichall. 



Dr. Dolichall has described this species and several other Diptera in a 

 Zoological Journal published in Java. I am unable to refer to this 

 work, but have adopted the names with which he has ticketed the 

 species in Mr. "Wallace's collection. 



HeUomeia has the aspect of Leptis, but is distinguished by the subanal 

 and anal veins being united before they join the border of the wing, 

 thus agreeing with Chrysopila, from which it differs in the shorter 

 third joint of the antennae^ and in the more slender arista. 



Gren. SUEAGINA, n. g. 



Fcsm, Corpus Ime&re. Co^m^ thorace vLx angustius. Pro&osm porrecta, 

 compressa, capitis latitudine pauUo brevior. Palpi lanceolati, porrecti. 

 Antennce brevissimae; articulus S^^^ rotundus; arista gracilis, nuda. 

 Abdomen subdepressum, thorace non duplo longius, apice obtusum. 

 Pedes nudi, inermes, longiusculi, sat graciles. Alee mediocres, areola 

 discali longissima. 



Female. Body linear, moderately broad. Head almost as broad as the 

 thorax ; vertex and front of equal breadth. Proboscis porrect, com- 

 pressed, a little shorter than the breadth of the head. Palpi lanceo- 

 late, contiguous to the proboscis. Antennae very short ; 3rd joint 

 round ; arista slendei*, bare, longer than the antenna. Thorax a little 

 narrower in front. Abdomen somewhat flat, less than twice the length 

 of the thorax, obtuse at the tip. Legs bare, unarmed, rather long 

 and slender. Wings moderately long and broad ; radial vein slightly 

 curved ; forks of the cubital vein a little longer than the preceding 

 part; 3rd externo-medial vein inclined beyond the discal areolet 

 towards the 4th, which is straight; subanal and anal veins united 

 close to the border ; discal areolet nearly six times longer than broad, 

 its fore side hardly angular. 



58. SuRAGiNA ILLUCENS, n. s. F(Bm. Cinereo-nigra, capite argenteo- 

 cinereo supra atro, palpis antennisque nigris, thorace vittis duabus 

 cinereis, abdomine basi cinereo maculis duabus magnis basalibus apice- 

 que testaceis, pedibus nigris, femoribus testaceis nigro cinctis, tibiis 

 intermediis luridis, alis fuscis postice cinereis albo bifasciatis et bi- 

 strigatis. 



