191G.] NATURAL SCIENCES OF PHILADELPHIA. 487 



Geranomyia guatemalensis sp. n. (Extra-limital.) 



Related to canadensis West wood; head gray with a narrow median 

 line; thorax yellowish brown with three indistinct stripes; femora 

 with a brownish subterminal annul us; abdominal tergites ringed 

 brown and yellowish. 



Male. — Length, excluding the rostrum, 6.5 mm.; wing, (i.7 mm.; 

 rostrum, 4 mm. 



Female. — Length as above, 6.8 mm.; wing, 8 mm.; rostrum, 4.1 

 mm. 



Rostrum elongate, brown, more darkened toward the apex. 

 Antennae rather short, black, the scape dark brown; flagellar seg- 

 ments rounded-oval. Head gray with a delicate, more or less 

 distinct, median line. 



Thoracic dorsum yellowish brown, the praescutum with three 

 broad, though rather indistinct, brown stripes, the middle stripe 

 broad behind, not attaining the suture; scutal lobes brown, median 

 area of the scutum and the scutellum pale yellow; post not um pale 

 whitish gray, narrowly blackened medially. Pleura dull brownish 

 yellow. Halteres brownish yellow, the knobs darker. Legs with 

 the coxa? brownish yellow; trochanters yellow; femora light brown 

 with a broad, subterminal, brown annulus, the extreme tip paler; 

 tibiae light brownish, the tips narrowly dark brown; tarsi dark brown. 

 Wings nearly hyaline; stigma distinct, oval, dark browm. Venation: 

 Be long, extending to about two-fifths the length of the sector; 

 Rs elongate, almost straight. 



Abdominal tergites dark brown, narrowly margined caudally and 

 laterally with dull yellow; basal sternites dull yellowish, more brown 

 on the intermediate segments. Male hypopygium with the penis- 

 guard very long and prominent. 



Habitat. — Guatemala. 



Holotype, cf, Aguna, Guatemala; altitude 2,000 feet (Dr. G. Eisen). 



Allotype, 9 , topotypic. 



Type in the collection of the United States National Museum. 



This species differs from the Nearctic G. canadensis in the clear 

 gray head, in the subterminal brown femoral ring, not with a black 

 tip as in canadensis, the long penis-guard, etc. 



Geranomyia knabiana sp. n. (Extra-limital.) 



Related to canadensis Westwood; rostrum elongate, black; head 

 dark brown; thorax brownish yellow, the praescutum with a broad 

 median stripe; femora with an indistinct brown ring before the tip; 

 wings with subcosta very long. 



