492 PROCEEDINGS OP THE NATIONAL MUSEUM. vol.49. 



wing, and 430 from end of Cu^; width of cell in forks of 31 at widest 

 part 160, near apex only 104; distance from lower side of cell in forks 

 of M to nearest part of Cu^ about 160. 



Oligocene at Gurnet Bay (Brodie). Laooe Coll. 7550. Just above 

 the wing of the type of Protoheris ohliteratus. 



Holotype.—Csit. No. 61437, U.S.N.M. 



TIPULA LIMIFORMIS, new species (Tipulidae). 

 Plate 61, fig. 11. 



Represented by the middle of a wing; close to T. limi Scudder, from 

 Florissant (Miocene). The wing must have been 21 or 22 mm. long, 

 resembling T. limi in the dusky suffusion along the cubitus and 

 slight dusky spot at origin of Rs, also in the nearly parallel upper 

 and lower sides of basal end of discal cell, the veins of discal and 

 fifth posterior cells forming a cross, and the fifth posterior somewhat 

 contracted apically. The base of fii'st marginal cell is 3 mm. basad 

 of apex of second basal. The following measurements are in /x: 

 Second basal on discal, 480; second basal on fifth posterior, 1,680; 

 fifth posterior on wing margin, 1,360. 



Oligocene at Gurnet Bay (Brodie). Lacoe Coll. 7523. 



Holotype.— Cat. No. 61438, U.S.N.M. 



. ATARBA VECTENSIS, new species (Tipulidae). 

 Plate 61, fig. 10. 



Wing a little over 5 mm. long, hyahne, with a large dark cloud 

 (as in A. pleuralis Williston) in the marginal cell, and radius basad 

 of marginal cell darkened for some distance. Stem of Rs straight, 

 except for a shght curve at its origin; Rs two-branched; anterior 

 crossvein well developed; four posterior cells; end of second basal 

 cell level with basal corner of discal cell (as in A. picticornis Osten 

 Sacken). The following measurements are in ^u: Humeral cross- 

 vein to origin of Rs, 2,128; origin of Rs basad of vertical level of 

 basal corner of discal cell, 240; Rs from origin to first branch, 672; 

 first basal cell on submarginal, 112; first basal on first posterior, 96; 

 discal on first posterior, 336; discal on second (morphologically second 

 and third) posterior, 96 ; discal cell on third (morphologically fourth) 

 posterior, 176; discal cell on fourth (morphologically fifth) posterior 

 672 ; truncate end of second basal, 288. The subcosta runs extremely 

 close to the radius, and ends in the costa at a very acute angle; 

 the crossvein to radius can not be made out. 



Ohgocene at Gurnet Bay (Brodie). Lacoe CoU. 7513. This 

 appears to agree well with Atarha, but it might nearly as well go 

 in Rhamphidia. The divergence of the branches of Rs suggests 

 Rhamphidia Jlavipes Macquart, but in Atarha pleuralis this is even 

 more extreme. It is probably not a generic character, though 



