mOM NEW GTJINEA. 123 



55. Dacus lateralis. Mas. Niger, capite thorace vittis quatuor 

 pectoreque vittis duabus flavis, abdominis spatio medio testaceo vitta 

 nigra, pedibus halteribusque flavis, femoribus posterioribus nigricanti 

 fasciatis, alis nigris basi ciuereis. 



Male. Black. Head pale yellow. Antennse black. Thorax with four 

 yellow stripes ; inner pair much shortened in front. Pectus with two 

 yellow stripes. Abdomen oval, compressed towards the tip, a little 

 broader but not longer than the thorax; middle part dingy testaceous, 

 with a black stripe. Legs yellow; posterior femora with a broad 

 blackish band. Wings black, cinereous towards the base, the latter 

 hue prevailing most along the hind border; veins black; discal 

 transverse vein straight, parted by much less than its length from 

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

 vein; halteres pale yellow. Length of the body 3} lines; of the 

 wings 6 lines. , 



56. Dacus varialis. Foem. Nigro-cyaneus, capite nigro facie flava, 

 antennis fulvis, abdomine fasciis duabus albidis, pedibus piceis tarsis 

 posterioribus albidis, alis cinereis gutta subcostali apiceque nigri- 

 cantibus vena discali transversa nigricanti nebulosa, halteribus albis. 



Female. Blackish blue. Head black, with whitish tomentum behind 

 and about the eyes; face yellow; epistoma piceous. Proboscis 

 piceous. Palpi yellow. Antennae tawny, a little longer than the 

 face ; third joint slightly tapering, four times longer than the second ; 

 arista bare, slender. Pectus with whitish tomentum. Abdomen 

 fusiform, much longer than the thorax, with two whitish bands, 

 tapering towards the tip ; oviduct exserted. Legs piceous, white at 

 the base beneath ; femora paler- towards the tips ; posterior tarsi 

 whitish, piceous towards the tips. Wings cinereous, blackish to- 

 wards the tips ; a blackish spot at the end of the subcostal vein ; veins 

 black ; discal transverse vein blackish-clouded, slightly curved in- 

 ward, parted by half its length from the border, and by somewhat less 

 than twice its length from the prsebrachial transverse vein ; halteres 

 white. Length of the body 5 lines ; of the wings 9 lines. 



Gen. Oetalis, Fallen. 



67- Ortalis contigua. Fam. Nigra, palpis albis, antennis piceis 

 subtus albidis, thorace cyaneo, tarsis albis, alis albis plaga basali 

 fasciisque tribus nigris, fascia 1* strigam albam costalem includente, 

 3* excavata, halteribus albis. 



Female. Black, shining. Head dull, whitish about the eyes. Palpi white. 

 Ahtennse piceous, whitish beneath, nearly as long as the face ; third 

 joint linear, twice the length of the second ; arista plumose. Thorax 

 dark blue. Abdomen conical, shorter and narrower than the thorax. 

 Tarsi white, with black tips. Wings white, with a basal black patch 

 and with three black bands ; first band very broad, containing a white 



