DIPTERA— TIPULIDyE. 575 



Although the first longitudinal vein terminates in this way, no trapezoidal 

 cell is formed near its extremity after the manner of tlie Tipulidaj longipalpi, 

 but tliis portion is quite as in Dicranorayia. The position of the auxiliary 

 vein is indeterminable from the fragment I have seen; but the "posterior 

 intercalary vein" of Loew issues from the lower outer angle of the discal 

 cell at a long distance from the great cross-vein, and in direct continuation 

 of the fourth longitudinal vein. All these characteristics place it with the 

 Tipulidse brevipalpi ; but the points wherein it differs from them, as indeed 

 from all other Tipulidse, are not a little extraordinary. Apparently it has 

 certain relations with the Amalopina, and has some resemblance to Symplecta, 

 but it may be questioned whether it should not form a section by itself in 

 the neighborhood of the Ptychopterina. 



The first longitudinal vein terminates in the upper branch of the second 

 at no great distance from the tip of the wing; at the same point it is con- 

 nected with the costa by an oblique cross-vein running in continuity with 

 its terminal portion. There are three suhmarginal cells and a secondary discal 

 cell. The large number of submarginal cells is due to the forking of the 

 posterior branch of the second longitudinal vein, just as two submarginal 

 cells are formed in Anisomera by the forking of the anterior branch of the 

 same vein. The secondary discal cell is formed by the division of tlie third 

 submarginal cell by a cross-vein, which unites with the elbow of the basal 

 portion of the lower branchlet of the fork of the second submarginal vein, 

 and leaves two cells beyond the supplementary discal cell, just as there are 

 two cells (the first and second posterior) beyond the true discal cell ; the 

 latter lies directly below the secondary discal cell, but is twice as large as 

 it. This is an anomaly quite unique, so far as I am aware, among the 

 Tipulidse. 



Cyttaromyia fenestrata. 



PI. 5, Fig. 78. 

 Cyttaromyia feneatrata Scadd., Bull. U. S. Geol. Geogr. Surv. Terr., Ill, 751-752 (1877). 



This species is represented by the portion of a wing and its reverse, 

 containing a little more than the distal portion with nearly all the important 

 part of the neuration. The striking peculiarities of this have been pointed 

 out in the description of the genus ; but a few minor points, probably of 

 specific value, may be added. The second longitudinal vein originates far 



