J. R. MALLOCH 185 



tion of the Illinois Natural History Survey, a male paratype is 

 in the collection of The Academy of Natural Sciences of Phila- 

 tlelphia; last female specimen in the collection of the American 

 ]\luseum of Natural History. 



All except the last specimen were taken by Mr. C. W. Johnson. 



The female of this species differs from any other in the ^enus 

 known to mo in having the fore tarsi slender. 



Hammomyia marylandica up. n. 



Male. — Black, suhoi^acjue, densel}' g;ray pruincsoont. Thorax rather indis- 

 tinctly trivittatc. Abdomen with a complete dorsal vitta, and a dark area 

 on each side of each tergite anteriorly. Tibiae reddish, the fore pair darker. 



Eyes separated at narrowest part of frons by about twice the width across 

 posterior ocelli; each orbit with four or five weak bristles; intcrfrontalia 

 with a very weak i)air of cruciate bristles in front of anterior ocellus; antennae 

 ;il)out three-fourths as long as face, third joint over twice as long as second; 

 arista about one-fourth longer than antenna, densely short-haired, the longest 

 hairs a little longer than its basal diameter; parafacial much wider than third 

 antennal joint and two-thirds as wide as height of cheek. Thorax with the 

 presutural acrostichals two-rowed; prealar bristle absent. Fifth sternite 

 with much shorter processes than in paludis. Fore tibia with one or two 

 median posterior bristles; fore tarsus longer than fore tibia; mid tibia with 

 one antero-dorsal, one postero-dorsal and two or three posterior bristles; 

 hind femur with the antero-ventral bristles more widely spaced than in 

 paludis, the postcro-ventral surface with a few median bristles; hind tibia 

 with three or four antero-ventral, antero-dorsal, jjostero-dorsal and posterior 

 bristles, the latter short. Length, G to 7 mm. 



Typc.—^\ Beltsv-ille, Marvland, May 13, 1917, (W. L. iVIc- 

 Atee). Paratypes.—l cf , topotypical; one male, Mt. Washing- 

 ton, New Hampshire, 3840 feet, August 6, 1909, (W. Reiff)- 



The type was returned to the collector. 



The rlistinctly haired arista, much more widely separated eyes 

 and longer processes of fifth sternite serve tc separate this species 

 from paludis, to which it is most nearly related. 



Pogonomyza proboscidalis s]). n. 



Similar ui coloi' to that of spiND.si.ssinid Mallo'h, the antennae entirely 

 black. 



Male. — Differs from that .species in having the *ifth alxlominal sternite with 

 much longer, more widely separated hairs on l,)wer margin, the legs much 

 stouter and shorter, with the mid femora conspicuously thicker than in spiNn- 

 .sissima, the fore tibia with two bristles, one antero-dorsal, one posterior, 

 the mid feauu- witliout the antero-vcniral bridles, the hind iViiiur with the 



TKA-N'S. A.M. K.\T. SOt'., XLVI. 



