46 INSECUTOR INSCITI^ MENSTRUUS 



male and two females, Oroya, Peru, over 12,000 feet, May 

 7 and 8, 1914, on short herbage in Rio Mantaro valley bottoms 

 above town (Townsend). 



Black. Front with thin silvery pollen, tending to faint 

 brassy shade. Face and cheeks with pale golden pollen. Occi- 

 put cinereous. Front, antennae and occiput blackish, frontalia 

 not so dark ; face and cheeks yellowish in ground color. Moso- 

 scutum thinly silvery, faintly showing four vittae that are nearly 

 equal. Scutellum dark testaceous, blackish on sides, tinged 

 somewhat dark on disk. Abdomen wholly black, subshining, 

 without trace of markings or pollen. The abdomen shows a faint 

 metallic luster, a trace of which is also perceptible on the 

 thorax. Front femora very faintly silvery on outside. Wings 

 very dilute smoky throughout, no yellow but rather a blackish 

 tinge on base, veins showing yellowish. Tegulse deeply smoky. 



Holotype, No. 19221, U. S. Nat. Mus., female (TD4268). 

 Allotype, male (TD4269). Paratype, female (TD4270). 



The male reproductive system shows the long vasa deferen- 

 tia characteristic of the Larvsevorini and allied tribes, with 

 very long accessory glands. The female system is character- 

 istic of the same groups, the uterus being very long and truly 

 straplike with eggs and maggots up to eight and ten parallel 

 rows. The paratype at time of pinning showed four extruded 

 white maggots, with black cephalopharyngeal skeleton, at- 

 tached to larvipositor. The preuterus is of regular form, but 

 bears on dorsal surface near base a pair of unequal saclike 

 vesicles, of which the larger one may exceed in size the preu- 

 terus itself. This structure is unique in the Muscoidea so far 

 as yet known. 



SOME WEST INDIAN DIPTERA 



By FREDERICK KNAB 



The following notes and descriptions of new species have 

 resulted from determination work. They are offered as a 

 slight contribution to our knowledge of the highly interesting 

 but neglected dipterous fauna of the Antilles. 



Mallophora macquartii Rondani. 



Mallophora scopifer Macquart (not Wiedemann), Dipt. Exot., 

 vol. I, pt. 2, p. 89 (1838). 



