SCUDDER ON FOSSIL INSECTS. 751 



iial vein less Ihau half the distance from that to the tip of the auxiliary 

 vein 5 the second longitudinal vein forks just beneath the tip of the 

 auxiliary vein, its upper branch bends just beneath the tip of the first 

 longitudinal, and its lower branch appears to fork just beyond the mid- 

 dle of its course. Cross-veins appear to divide the interspace between 

 the second and third longitudinal veins (the second submarginal cell) 

 into three equal parts ; and there is certainly a cross- vein in the inter- 

 space between the fourth and fifth longitudinal veins (the second basal 

 cell) directly opposite the origin of the third longitudinal vein. Length 

 of body 9.25™'" ; antenme 2.G'"™; wings 9.25'^"". 



Cytiaromyia {/.uzzapuq, /lu'ca), nov. gen. 



This genus of TlpuUdw differs somewhat remarkably from any known 

 to me. It appears to belong among the Tipulidoj hrevipaJjn, the first lon- 

 gitudinal vein terminating in the second much in the manner of Dicra- 

 nomyia, with "which, however, this genus seems to have little else in 

 common. Although the first longitudinal vein terminates in this way, 

 no trapezoidal cell is formed near its extremity after the manner of the 

 Tijnilidw longipalpi, but thisportion is quite as in Bieranomyia. The posi- 

 tion of the auxiliary vein is indeterminable from the fragment I have seen j 

 but the "posterior intercalary vein" of Loew issues from the lower onter 

 angle of the discal cell at a long distance from the great cross-vein, and 

 indirect continuation of the fourth longitudinal vein. All thesecharacter- 

 istics place it with the TipulidwhrevipaJpi ; but the points wherein it differs 

 from them, asindeed from all other Tipulidce, are notalittle 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 sec- 

 ond at no great distance from the tip of the wing ; at the same point, it 

 is connected with the costa by an oblique cross-vein, running in conti- 

 nuity with its terminal portion. There are three submarginal cells and a 

 secondary discal cell. The large number of submarginal cells is due to 

 the forking cf the i^osterior 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 the 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 sup- 

 plementary discal cell, just as there are two cells (the first and second pos- 

 terior) beyond the true discal cell ; the latter lies directly below the sec- 

 ondary discal cell, but is twice as large as it. This is an anomaly quite 

 unique, so far as I am aware, among the TipuUda\ 



Cytiaromyia fenestrata. — 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 pecu- 



