490 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



what seem to be indications of the characteristic Blepharocerid 

 folds, but it is not certain that these are genuine. 

 Genotype, — Paltostomopsis ciliatus, new species. 



PALTOSTOMOPSIS CILIATUS, new species. 

 Plate 62, fig. 4. 



Wing as seen (without extreme apex and base) 4 mm, long, if com- 

 plete it would be about 5 mm.; hyaUne, with brown veins. Rs 

 slightly, but not much, bent where it gives off the upper branch, the 

 latter straight, not so long as lower branch; if upper branch of Rs 

 were produced downward to the lower margin of wing it would meet 

 the end of the media; distance between end of media and end of 

 cubitus 1,520 /*; end of cubitus to the rounded anal angle of wing 

 1,840 /x. 



Oligocene at Gurnet Bay (Brodie). Lacoe CoU. 7522. A portion 

 of the abdomen can be seen and appears normal for the family. 



In spite of its antiquity this is a highly specialized genus. 



Holotype.—C&t. No. 61433, U.S.N.M. 



MYCETOPHILA VECTENSIS, new species (Mycetophilidae). 



Wing 3 mm. long; veins all dark brown, very distinct; a brown 

 shading along the veins, and apex of costal cell and region of radius 

 infuscated, but no definite large dark spots. No subcostal nervure 

 visible, merely a slight brown shade at base of costal cell, the condi- 

 tion essentially as in the Uving M. anomala Johannsen, wliich the fossil 

 also resembles in the spotless wings, and the cubital fork being far 

 proximad of the fork of the media and also proximad of the base of 

 the R-m crossvein. Costal cell very narrow, its width about level 

 with the cubital fork being 80 /x; Rs curved downward apically. The 

 following measurements are in fi: Level of fork of media, which is 

 same level as origin of Rs from R (apparent crossvein), to end of R, 

 about 1,280; media from crossvein to fork, 176; level of fork of 

 cubitus basad of level of fork of media, 252. Two delicate anal veins 

 visible. 



Ohgocene at Gurnet Bay (Brodie). Lacoe Coll. 7620. On small 

 piece of rock with PJiiloponites, etc. Certainly close to the Iving 

 M. anomala. 



Holotype.—C&t. No. 61434, U.S.N.M. 



SCIARA GURNETENSIS, new species (Mycetophilidae). 



Wing about 3.4 mm.; characters perfectly normal for the genus. 

 Cell in fork of media formed about as in the living S. neglecta Johann- 

 sen, its length (to the upper apical comer) somewhat greater than the 

 stem of the media. The following measurements are in /x: Length 

 of apparent crossvein (considered to be base of Rs) from R to Rs, 50; 



