Vol. xxv] ENTOMOLOGICAL NEWS 207 
Molophilus sagittarius sp. n. (PI. IX, fig. 4.) 
Color brown; male antenne short; ventral appendage of the male 
hypopygium simple, its caudal margin with about six long serrations. 
Male.—Length, about 3.8 mm.; wing, about 6 mm. Palpi dark brown. 
antenne brown, short, the flagellar segments oval; head grayish brown. 
Pronotum enormously enlarged, fitting around the cephalic margin 
of the mesonotum like a life belt, bright yellow. Prascutum and 
scutum dark brown; scutellum yellowish brown; postnotum dark 
brown. Pleurze dark brown. Halteres entirely light yellow. 
Legs, coxze and trochanters brownish yellow; femora yellowish 
brown; tibie and tarsi brown. 
Wings subhyaline, veins brown, rather distinct. 
Abdomen dark brown. Hypopygium with the ventral appendage 
(See Plate IX, figure 4) simple, flattened, its outer margin with about 
six long serrations. 
Female—About as in the male but the pronotum is not conspicu- 
ously swollen and is not yellow; the thoracic prescutum has indica- 
tions of three darker dorsal stripes; wings a little browner. 
Holotype, male, Coroico, Bolivia. Allotype, female, Callanga, 
Peru. Paratype, female, Cillutincara, Bolivia. 
Allied to M. perseus Alexander’, of Colombia, but the 
ventral appendage of the male hypopygium is much less regu- 
larly serrated on its outer margin and the teeth are fewer 
(about 6 instead of 10 or 12) and longer; dorsal lobe very 
small and narrow. The hypopygium of M. guatemalensis 
Alexander® has never been described and so I figure the 
ventral hypopygial appendage (see Plate IX, fig. 3) ; the ap- 
pendage is simple, sickle-shaped, on the outer side near the 
base with a sharp point. 
Genus Gnophomyia Osten Sacken. — 
1859. Gnophomyia. Osten Sacken; Proc. Acad. Nat. Sci., Phila., p. 
223. 
Gnophomyia luctuosa Osten Sacken. 
One female from the Sierra, San Lorenzo, Colombia; Uj- 
heyi, collector. 
T Alexander, Journ. N. Y. Ent. Soc., vol. 21, pp. 201, 202; pl. 6, 
figs. 4, 5 (1913). 
8 Alexander, Proc. U. S. Nat. Mus., vol. 44, No. 1966, p. 511 (1913). 
