380 Mr. F. W. Edwards on a remarkable 



of Srinagar, Kasliniir, in or by mountain streams at a liciglit 

 of 11,0(10-12,000 ft. The collection contained only abont 

 lialf-a-duzen Diptcra, but among these were two examples of 

 the most extraordinary insect to be described below. Many 

 of the characters of this species are so remarkable that there 

 seemed at first room to doubt Mhether it might not be 

 Neuropterous rather than Dipterous, the wings and head 

 both suggcstini; the Ephemeridn? in some respects. After an 

 examination of the literature, however, and after consulting 

 my colleagues at the British Museum, and mv friends 

 Dr. C. P. Alexander, Mr. J. E. Collin, Mr. K. J.* Morton, 

 and Dr. D. Sharp, all possible doubt on the matter has been 

 removed, and there can be no question that the insect 

 represents a new Dipterous type for which it will be 

 necessary to erect a special family. This new family is 

 perhaps allied to the Blepharoceridte, themselves one of the 

 most aberrant groups of the Diptera, but the difl'erences are 

 so great that there seems no justification for including the 

 new genus within the Hlepharoceridte. Some |)oints of its 

 structure even suggest the possibility that our insect may have 

 some connection, however remote, with the Cyclorrhapha. 

 I propose to name and define the family as follows : — 



Fam. DeuterophlebiidaB, nov. 



Head small, broad, and flat, hidden under the projecting 

 mesonotum. No ti'ace of mouth-parts. No ocelli. Antennae 

 6-segmented, the last segment (at least in the ^ ) several 

 times longer than the whole body and practically bare, the 

 remaining segments all rather short. Thorax very large, 

 not much shorter than the abdomen; no distinct suture 

 between the mesouotal praiscutum and scutum. Abdomen 

 with nine distinguishable segments (including the genital), 

 but segments 1, 2, and 8 all very much reduced. No 

 abdominal spiracles. Legs : cox?e all short. Tibial spurs 

 absent. Tarsi with large subcircular empodia and each with 

 only a single claw. JVinys very lurge and broad, covered 

 with dense microtrichia and with a fringe of fine hair round 

 the posterior margin, but no trace of macrotrichia even on 

 the costa. Hardly a trace of true veins, but an elaborate 

 fan-like development of secondary folds, with transverse 

 folds forming concentric lines. Haltores well developed. 



Typical genus, Deute)'ojjhlibia,ge\). nov., with the characters 

 of the family. 



The new genus differs from all known Ijlepharoccridaj 

 in the absence of mouth-parts and ocelli, the form of the 



