338 DIPTERA OF NORTH AMERICA. ' [PART II. 



G. P. lamellatus LOEW. . Obscure viridi-aeneus, postica thoracis 

 parte et scutello violaceis, seta antennarum pilis longioribus plumata, 

 ciliis oculorum inferioribus nigris, pedibus flavis, coxis anticis concolori- 

 bus, basim versus nigris, lamellis hypopygii brevibus, nigris. 



Dark bronze-green, the hind part of the thorax and the scutellum violet ; 

 arista feathered with rather long hairs ; cilia of the inferior orbit black ; 

 feet and fore coxae yellow, the latter black at the basis ; the short lamellae 

 of the hypopygium black. 



Long. corp. 0.12. Long. al. 0.12. 



SYN. Pelastoneurus lamellatus LOEW, Berl. Entom. Zeitsch. VIII, 95, 90. 



Dark green, bronze-colored, the larger portion of the posterior 

 part of the dorsum of the thorax and the scutellum violet. Front 

 dark violet, shining. Antennae dusky red, most of the third joint 

 black-brown. The feathery pubescence of the arista rather long. 

 Face with a white reflection. Cilia of the inferior orbit black. 

 The impression on the lateral end of the transverse suture of the 

 thorax with a bright white reflection. The lamellae of the hypo- 

 pygium short, rather crescent-shaped, black and covered with 

 black hair. Fore coxaa yellow, blackened from the basis up to 

 the middle. Feet yellow; the extreme tip of the hind femora 

 black. Middle tibias at the extreme tip, hind tibiae at the extreme 

 basis and tip, brown or black-brown ; fore tarsi, towards the end, 

 strongly infuscated ; the four posterior tarsi, with the exception 

 of the basis, brownish-black. Tegulae whitish, with black cilia. 

 Wings tinged with blackish-gray ; the space between the third 

 and fourth longitudinal veins comparatively broad. 



Hob. New York. (Osten-Sacken.) 



^t. P. al>T>reTiatus LOEW. % and 9 Obscure viridi-aeneus, seta 

 antennarum breviter plumata, ciliis oculorum inferioribus nigris, pedibus 

 ex testaceo flavis, femoribus anterioribus basim versus interdum iufus- 

 catis, coxis omnibus nigris, lamellis hypopygii brevibus, nigris. 



Dark-green, bronze-colored ; arista feathered with short hairs ; cilia of the 

 inferior orbit black ; feet brownish-yellow ; the anterior femora towards 

 the basis sometimes infuscated ; all the coxae blackish ; the short lamellae 

 of the hypopygium black. 



Long. corp. 0.13. Long. al. 0.13. 



SYN. Pelastoneurus abbreviates LOEW, Berl. Entom. Zeitschr. VIII, 94, 89. 



Dark green, bronze-colored. Front dark steel-blue. Antennre 

 rather dull red ; third joint mostly black-brown. Arista of the 

 antennae feathered with very short hairs. The face of the male 



