496 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



of wing straight, not convex, so that the anal field is not nearly twice 

 as broad (deep) as the discal cell; costa continued to apex of wing, 

 which is obtuse; antennae small, normal for the group; thorax mod- 

 erately convex above. In the following description of the wing the 

 measurements are all in fi: Costal cell very acutely pointed at apex, 

 where there is apparently no enlarged bristle; lower side of marginal 

 cell at apex straight, the cell extending to near the end of the wing 

 as in modern Ephydra; sides of submarginal cell essentially parallel, 

 the cell 160 deep at level of end of discal cell, and 208 deep at level 

 of end of its upper side ; first posterior cell slightly contracted apically, 

 its depth at level of end of discal cell 208, but near apex 176; anterior 

 crossvein 96 long, placed 576 from end of discal cell, and only about 

 272 from its base on upper side, though about 400 from its base on 

 lower side, which, however, includes the confluent second cell ; discal 

 cell 144 broad at apex and 112 broad (deep) at level of crossvein; 

 lower side of discal cell perfectly straight, except the basal 160, which 

 bulges downward, marking the perfectly confluent second basal ceU. 



Oligocene at Gurnet Bay (Brodie). Lacoe Coll. 7512. This differs 

 from typical Ephydra by the smaller anal field, and the crossvein 

 nearer the base of the discal cell, more as in Parydra, Hydrellia, etc. 



On the same piece of rock is a Mycetophila, too imperfect for 

 description. 



Holotype.— Cut. No. 61445, U.S.N.M. 



HIPPELATES BRODIEI, new species (Chloropidae). 



Wing about 1.8 mm. long, broad, hyaline, costa almost straight, 

 apex very obtuse, anal area broad; the costa shows fine bristles. 

 Anterior crossvein considerably beyond middle of discal cell; second 

 basal cell wholly confluent with discal. The following measurements 

 are in /x: End of marginal cell on costa about 1,090 from base of wing, 

 and 592 beyond end of costal cell; at end of marginal cell is a minute 

 brown spot; end of marginal cell 560 basal of level of tip of wing; 

 width of first posterior cell at apex about 240; submarginal on first 

 basal, 240 ; length of first basal cell about 480 ; anterior crossvein to 

 base of marginal cell, 416; first posterior on discal cell, 224; length 

 of discal cell, including confluent second basal, about 640; second 

 posterior on axillary, 400. 



Oligocene at Gurnet Bay (Brodie). Lacoe Coll. 7643. So far as 

 anything shows, this is a perfectly ordinary Hippelates; considering 

 its minute size, its preservation is remarkable. Of course the char- 

 acters of the legs, used to define the genera of this family, can not be 

 made out; nor is it possible to see the antennae. 



Ilolotype.— Cat. No. 61446, U.S.N.M. 



