594 PROCEEDIXGS OF THE NATIONAL MUSEIW. vol.xxiii. 



MACROCERA NEBULOSA, new species. 



Yellow, the antenna' excei)t the base, three large spots on the pleura, 

 knohs of halteres, ])uscs of al)dominal segments two to five and whole 

 of abdomen beyond the fifth segment in the male, the base of eaeh 

 segment exeept the first in the female, also the tarsi, dark brown; body 

 polished; wings bare, hyaline, marked with four irregular brown 

 fascia^; the first begins at apex of auxiliary vein and extends to the 

 anal angle; the second extends from apex of first vein to apex of the 

 sixth, and is almost, or quite, interrupted in the fourth posterior cell; 

 the third extends from anterior branch of third vein to apex of ante- 

 rior branch of the fifth, while the last one borders apex of wing and 

 is connected with the preceding one along the third vein and both 

 branches of the fourth; length, -i to 5 mm. Two males and one female. 



Habitat. — Mount Washington and Franconia, New Hampshire (Mrs. 

 A. T. Slosson), and Clementon, New Jersey (Mr. C. W. Johnson). 



Ti/pe.~Ciit. No. .5439, U.S.N.M. 



CEROPLATUS CLAUSUS, new species. 



Yellow, upper part of head brownish yellow, a black ocellar dot, 

 the antermtv, four indistinct vittsB on mesonotum, one or two spots on 

 pleura, a fascia at base of each segment of abdomen and knobs of 

 halteres, brown; antenna greatly compressed, the joints except last 

 one wider than long; wings hyaline, a grayish brown spot fills the 

 submarginal cell and encroaches on the adjoining cells; auxiliary vein 

 extends considerably beyond base of third vein; auxiliary cross vein 

 close to the humeral, upper branch of third vein ends in the first at 

 about its length before apex of the latter, costa scarcely extending 

 beyond apex of third vein, fifth vein forks considerably beyond base 

 of the third; length, 7 to 8 nmi. A specimen of each sex. 



7/;^/,;/,^^. —Franconia, New Hampshire (Mrs. A. T. Slosson), and New 

 Brunswick, New Jersey (Dr. J. B. Smith). 



7}/;>..— Cat. No. 5440, U.S.N.M. 



PLATYURA INOPS, new species. 



Yellow, an ocellar dot and apices of abdominal segments black, most 

 extended on the posterior segments, tarsi yellowish brown; antenna 

 subcylindrical, the third joint noticeably longer than broad (sipical 

 portion of antenna wanting in all the specimens); wings hyaline, a 

 grayish brown spot before apex of third vein; auxiliary vein extend- 

 ing a short distance beyond base of the third, auxiliary cross vein at 

 about one-sixth of distance from the humeral to apex of auxiliary vein, 

 upper branch of third vein ending in the costa at about one-third of 

 distance from apex of first vein to apex of the third, costa extending 

 nearly midway between apices of third vein and upper branch of the 



