110 MB. WALKER OK NEW SPECIES OE DIPTERA 



blackish. Wings cinereous, blackish towards the tips; veins black; 

 halteres dingy testaceous. Length of the body 6 lines ; of the wings 

 12 lines. 



Subfam. Laphbttes, Walk. 

 G-en. Laphbia, Fair. 



24. Laphria tibialata. Mas et Foem. Nigra, capita argenteo an- 

 tice subaurato, antennarum articulo 3o fusiformi, thoracis maculis 

 lateralibus subaurato-albidis, abdomine purpurascente macuhs latera- 

 libus transversis argenteis, tibiis anticis et posticis subtus argenteo 

 pilosis, alis cinereis apud venas fuscescentibus. 



Male and Female. Black. Head silvery white, slightly gilded in front ; • 

 mystax composed of a few black and white bristles ; beard white, 

 shining. Third joint of the antennae fusiform, a little longer than the 

 first and second. Thorax on each side with several whitish shining spots 

 which are more or less gilded in some aspects. Abdomen purphsh 

 blue or purple ; each segment with a transverse silvery spot accom- 

 panied by a bristle on each side. Legs greenish black, stout, bristly ; 

 coxae silvery ; fore tibiae and hind tibiae with silvery hairs beneath, 

 except towards the base ; pulvilli ochraceous. Wings cinereous, dif- 

 fusedly brownish about most of the veins ; veins black ; halteres pale 

 tawny. Length of the body 9-10 lines ; of the wings 19-20 lines. 



25. Laphbia PLACENS. Mas et Fwn. Cyanea, capite albido, antennis 

 nigris, abdomine fasciculis lateralibus albis, alis cinereis fasciis tribus 

 nigris apud costam connexis, halteribus albis. 



Male and Female. Dark blue. Head with shining whitish tomentum ; 

 mystax composed of a few white bristles ; beard very small. Antennse 

 black; third joint shghtly tapering, much longer than the first and 

 second together. Pectus with cinereous tomentum. Abdomen linear, 

 partly tinged with purple ; each segment with a small tuft of white 

 hairs on each side. Legs hardly stout, slightly bristly. Wings cinereous, 

 with three black bands vi^hich are connected on the costa ; third band 

 apical, connected with the second on the hind border ; veins black ; 

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



26. Laphria pipunculoides. Mas. Cyanea, facie alba, antennis 

 abdoraineque nigris, pedibus rufescentibus, tibiis tarsisque posticis 

 nigris, alis cinereis, halteribus albidis. 



Male. Blue, shining, not bristly. Head broader than the thorax, with 

 shining white tomentum on the face, which is very narrow. Eyes flat 

 in front. Proboscis black, very short. Antennae black. Abdomen 

 black," shghtly broader hindward, about twice the length of the thorax. 

 Legs reddish, slightly bristly ; hind tibiae and hind tarsi black. Wings 

 cinereous; veins black, piceous at the base; halteres dingy whitish. 

 Length of the body 4 lines ; of the wings 7 lines. 



