380 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 52, 



PROTOSCINIS, new genus (Chloropidae). 



Minute flies closely resembling Botanobia (Oscinis), but second vein 

 leaving first basal cell very near its base, and anterior cross-vein much 

 before middle of combined discal and second basal cell. Costal vein 

 going as far as tip of fourth; costa with small stiff black bristles, about 

 six in 80 microns; second vein straight, faintly curved upward at 

 end; third and fourth veins not converging distally; lower side of 

 discobasal cell not at all bulging outward (downward). 



Type of the genus. — Protoscinis perparvus, new species. 



PROTOSCINIS PERPARVUS. new species. 



Plate 31, fig. 11. 



Thorax robust, black, 640 microns wide; wing 1728 microns long, 

 hyaline. The following measurements are in microns: Base of wing 

 to end of first vein, 512; width of submarginal cell at level of end of 

 second vein, 192 ; third vein from level of end of second to tip of wing, 

 352; fu-st posterior cell on wing margin, 192; width of first posterior 

 cell at level of end of discobasal, 160; first posterior on discobasal, 

 416; total lenth of discobasal, 560; second posterior on discobasal, 

 160. 



Ohgocene: Gurnet Bay (Brodie), British Museum, I. 8632. 



The venation is not very different from that of Ops glaberrima, as 

 figured by Lamb. Possibly the fossil could be referred to Ops, but 

 that name is preoccupied. 



ANTHOMYIA (sens. lat.) PERSEPULTA. new species. 



Length 5.7 mm., wing, 4.3 mm.; robust, black or dark brown, 

 wings dusky; abdomen thinly beset with long bristles; hind tibia 

 with a few long bristles on posterior margin; eyes (in lateral view) 

 semicircular; mouth parts and palpi as in Anthomyia. Wings broad; 

 venation normal; auxiliary vein strong, only close to first vein 

 toward base; upper apical angle of discal cell a right angle; upper 

 basal angle of second posterior cell an obtuse angle; first posterior 

 cell scarcely at all contracted apicaUy. The head is small, in lateral 

 profile (including position and shape of eye) nearly as in male Phyllo- 

 gaster cordyluroides, though not so high. The following measure- 

 ments are in microns: Base of wing to end of auxiliary vein, about 

 1040; submarginal cell on wing margin (not allowing for curve), 752; 

 base of wing to anterior cross-vein, about 1552; anterior cross- vein 

 to upper apical corner of first posterior cell, 2560 ; width of first pos- 

 terior about middle, 544; first posterior on discal, 830; second pos- 

 terior on discal (the apical side of which is straight), 560; lower apical 

 corner of discal to wing-margin. 



