\'oI. XXV ] F-XTOMOLOGICAI. NEWS 207 



Molophilus Sagittarius sp. n. (PI. IX, fig. 4.) 



Color brown ; male antennae short ; ventral appendage of the male 

 hypopygium simple, its caudal margin with about six long serrations. 



jUa/<^.— Length, about .3.8 mm. ; wing, about 6 mm. Palpi dark brown, 

 antennas 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. Pr:escutum and 

 scutum dark brown ; scutcUum yellowish brown ; postnotum dark 

 brown. Pleurae dark brown. Halteres entirely light yellow. 



Legs, co.xae and trochanters brownish yellow ; femora yellowish 

 brown ; tibiae 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 aliout 

 six long serrations. 



Female. — About as in the male Init the pronotum is not conspicu- 

 ously swollen and is not yellow ; the thoracic prsscutum has indica- 

 tions of three darker dorsal stripes; wings a little browner. 



Ilolotypc. male, Coroico, liolivia. Allotype, female, Callanga, 

 Peru. Paratypc, female, Cillutincara, Bolivia. 



Allied to M. perseus Alexander", of Colomhia, but tlie 

 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. gtiatemalensis 

 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. 



^Alexander, Journ. N. Y. Ent. Soc, vol. 21, pp. 201, 202; pi. 6, 

 figs. 4. 5 (1913)- 

 ' .Alexander, Proc. U. S. Nat. Mus., vol. 44, No. ig66, p. 511 (1913). 



