323 DIPTERA OF NORTH AMERICA. [PART II. 



6. P. lamellatus LOEW. . Obscure viridi-seneus, postica thoracis 

 parte et scutello violaceis, seta antennarum pilis longioribus plum;:t;i, 

 ciliis oculorum inferioribus iiigris, pedibus flavis, coxis anticis couoolori- 

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



Dark bronze-green, the hind part of the thorax and the scutelluin violet : 

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

 feet and fore coxze 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 coxae yellow, blackened from the basis up to 

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

 black. Middle tibiae 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. 



Hab. New York. (Osten-Sacken.) 



7. P. alJbreviatus LOEW. %, and J Obscure viridi-seneus, seta 

 antennarum breviter plumata, ciliis oculorum inferioribus nigris, pedibus 

 ex testaceo flavis, femoribus anterioribus basim versus interdum infus- 

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



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 tbe coxa? blackish ; the short lamellae 

 of the hypopygium black. 



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



SYN. Pelastonenrus albreviatus LOEW, Berl. Entom. Zeitschr. VIII, 94, 89. 



Dnrk green, bronze-colored. Front dark steel-blue. Antenmu 

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

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



