26<S MR. avalkee's catalogue of dipterous insects 



the latter with tawny hairs. Abdomen cinereous, shining, with nu- 

 merous black bristles ; hind borders of the segments black. Wings 

 dark cinereous, blackish in front ; veins tawny, black towards the tips ; 

 prsebrachial vein forming a very obtuse and rounded angle at its flex- 

 ure, almost straight from thence to its tip ; discal transverse vein un- 

 dulating, parted by hardly half its length from the border, and by 

 much less than its length from the pra;brachial transverse vein ; alulje 

 cinereous ; halteres tawny. Length of the body 5 lines ; of the wings 

 10 lines. 



Subfam. Lauxanides, Walk. 



Gen. Celtphus, Dolman. 



19. Celyphus scutatus, Wied. See Vol. I. p. 131. 



Subfam. Oktalides, Holiday. 



Gen. Platystoma, Latr. 



20. Platystoma frontalis, n. s. Mas. Cinerea, capite testaceo, 

 fronte nigra, facie plana longissima nigro bimaculata, antennarum 

 articulo 3" Imeari longissimo arista nuda, thorace nigricante vittis 

 quatuor cinereis, abdomine nigro brevi raaculis fasciisque duabus cine- 

 reis, pedibus rufis, femoribus apice nigris, tarsis uigris basi rufis, alis 

 subcinereis e maculis nigris subfasciatis. 



Male. Cinereous. Head testaceous ; front black, slightly oblique ; 

 face flat, very long, slightly retracted, forming au obtuss angle with 

 the front, with a black spot on each side of the epistoma. Antennae 

 about half the length of the face ; 3rd joint linear, very long ; arista 

 bare, hardly longer than the 3rd joint. Disk of the thorax blackish, 

 with four slender cinereous stripes, the inner pair almost contiguous. 

 Abdomen black, elongate-oval, much shorter and rather narrower 

 than the thorax, cinereous towards the base, with two cinereous spots 

 on each side of the middle part, and with a broad subapical cinereous 

 band. Legs dark red ; femora black towards the tips ; tibiae streaked 

 with black ; tarsi black except towards the base. Wings pale cine- 

 reous, with a luteous tinge about the slightly dilated basal part of the 

 costa, with numerous black spots and dots, most of which form four 

 irregular bands; veins black, luteous towards the base; discal trans- 

 verse vein almost straight, parted by one-fourth of its length from the 

 border, and by nearly twice its length from the prsebrachial transverse 

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



21. Platystoma punctiplena, n. s. Fcem. Cinereo-nigra, capite 

 piceo, arista subpubescente, thorace sublineato, pectore punctato, alis 

 nigris limpido punctatis fascia furcata nigra. 



Female. Cinereous black. Headpiceous, white about the eyes; mouth 



