380 Professor Williston on the 



4. Wings with markings octovittata. n. sp. 



Wings unicolorous macula^ Loew 



5. Shining black species (Lauxania), sp. 



Not shining black 6 



6. Third joint of the antennae yellow sordida, Med. 



Third joint in large part black vulgaris^ Fitch. 



7. Mesonotum vittate 8 



Mesonotum not vittate 11 



8. Wings for the most part dark-brown . . angiistlpennis^ n. sp. 

 Wings nearly hyaline , 9 



D. Mesonotum with four slender brown stripes ; third joint of 



the antennae reddish-yellow lineata, n. sp. 



Mesonotum with broad stripes ; third joint of antennae 



black , 10 



10. Mesonotum with broad ashy-grey and brown stripes exul, n. sp. 

 Mesonotum with yellow and brown stripes . . venusta, n. sp. 



11. Scutellum with two black spots on the margin ingrata, n. sp. 

 Scutellum without spots sororia n. sp. 



1. Sapromyza macula, 

 Sapromyza macula, Loew, Centur., x., 82. — Texas. 



<^ , $ . Front opaque-yellow, with a median brown stripe ; 

 ocelli with small proclinate bristles. Antennae yellow, third joint 

 twice as long as wide ; arista short-plumose. Face and cheeks 

 light-yellow, the former with a round black spot above the oral 

 margin in front, the latter with a small brown spot. Thorax 

 ochraceous yellow, the mesonotum with four dark-brown stripes, 

 the median pair extending on the scutellum. Pleurae with two 

 brown stripes, the upper one below the base of the wings ; the 

 lower, shorter, one across the base of the middle coxae. Abdomeiji 

 yellow or luteous yellow, with three rows of black spots, the 

 lateral ones more or less elougate and sometimes coalescent. Legs 

 light-yellow, the tibiae with a proximal, more or less indistinct 

 (especially on the front pairs), narrow brown ring. Wings tinged 

 with yellowish ; penultimate section of the fourth vein one-half 

 the length of the ultimate section. Length 5-5^ mm. 



Numerous specimens from St. Vincent and Chapada, 

 Brazil. I have no North American specimens for com- 

 parison, but the description applies so well that I think 

 the identification is probable. The West Indian, speci- 

 mens are lighter yellow, and the thoracic stripes are 

 darker and are continued on the scutellum. Those from 



