324 DIPTERA OF NORTH AMERICA. [PART 17. 



court. Trompe et palpes brans. Antennes : les premiers articles 

 d'un fauve brunatre ; les autres brunatres ; premier assez court ; 

 troisieme et suivants oblongs, ovales ; les derniers manquent. 

 Thorax d'un noir luisant ; cotes d'un bran luisant. Abdomen 

 manque. Pieds : hanches fauves, ainsi que les cuisses anterieures: 

 le reste manque. Balanciers brans. Ailes brunes: un point 

 blanc a la base des cellules basilaires ; une tache hyaline avant la 

 base de la marginale ; une bande hyaline avant la base de la 

 sous-inarginale ; l'interieur de la discoidale et des posterieures 

 hyalin ; deux marginales, deux sous-marginales ; deuxieme pos- 

 terieure assez petite, a long petiole. (De la Caroline.) 



{Translation.) — Thorax black; wings brown, with hyaline spots and 

 bands. 



Head testaceous ; back part of the front brown. Rostrum short ; pro- 

 boscis and palpi brown. Antennae : first joints brownish-fulvous ; the 

 others brownish ; the first rather short, the third and following oblong, 

 oval ; the last joints are wanting. Thorax black, shining ; pleurae brown, 

 shining. The abdomen is wanting. Feet : coxae fulvous, as well as the 

 fore femora ; the remainder is wanting. Halteres brown. Wings brown ; 

 a white dot at the inner end of the basal cells ; a hyaline spot before the 

 inner end of the marginal cell ; a hyaline band before the inner end of the 

 submarginal cell ; the inside of the discal and of the posterior cells is 

 hyaline ; two marginal and two submarginal cells ; the second posterior 

 cell is short, with a long petiole. (From Carolina.) 



Walker, List of the Specimens of the Dipterous Insects in the 

 Collection of the British Museum, Vol. I. 



Page 80. Ptyclioptera metallica. 



Nigro-senea, abdomine apice fulvo, pedibus fuscis, femoribus 

 fulvis, alis cinereis. 



Body black ; head and chest bronze ; abdomen bronze black, 

 tawny at the tip ; legs brown, pubescent ; thighs tawny, with 

 brown tips ; wings gray, tawny along the fore border ; veins 

 brown ; poisers dull tawny. Length of the body 3 lines, of the 

 wings 6 lines. 



St. Martin's Falls, Albany River, Hudson's Bay. 



Some of the characters of this species differ from those of the 

 other Ptychopterse : the fifth longitudinal vein extends beyond 

 two-thirds of the length of the wing, and there joins the fore 

 border, the fourth is adjacent to the fifth till near the tip, and 

 after emitting a branch, which runs parallel to it, is forked beyond 



