212 NEW YORK STATE MUSEUM 



Color yellowish, darker on the dorsum, and on the forelegs. 

 Wings hyaline with brownish veins, the color being deepest 

 along the radial and cubital stems. Middle and hind legs yellow, 

 forelegs brownish, all legs darker on tips of tarsi. The head is 

 yellow but the three terminal segments of the palpi are brown, and 

 the flagellum of the antenna is brownish; it consists of 12 oval 

 segments, the last one seated styluslike on the apex of the one be- 

 fore it and not fully differentiated therefrom, the flagellum hardly 

 longer than the total length of the head including its short proboscis. 

 The lower valves of the ovipositor are broad and obtuse at the apex ; 

 the upper valves are short, triangular at base, but prolonged and up- 

 curved at apex; and the tips of the two pairs are nearly on a level. 



A single female specimen was obtained at Walnut, Lake Michi- 

 gan on the 7th of August 1906 in a trap lantern. It will probably 

 eventually constitute a new genus, but it is evidently derived from 

 the more typical Dicranomyia, by a process of reduction, and it rep- 

 resents the maximum of reduction of the median vein along this 

 developmental line. 



I take pleasure in dedicating this species to my former pupil 

 Mr. C. O. Wharton, to whom I am indebted for the prepara- 

 tion of the pencil drawings for most of the original figures 

 of this paper, and for some other assistance toward its prepa- 

 ration. 



I wish to call attention in passing, to a number of forms 

 in this family that are misplaced. Meunier's fossil crane fly 

 from amber Palaeoerioptera [Ent. Soc. France. Bui. 68:359, %• ] 

 is not a Tipulid at all but belongs to the Psychodidae. 



Van der Wulp's Tip u la tenuis [Tijd. v. Ent. 1884, 28 185, 

 pi. 4, fig. 7. I have copied the figure in pi. 16, fig. 2] is not a 

 Tipula at all. In its long m-cu cross vein, situate at the very inner 

 end of the cell, ist M,, it is much more like Megistocera \_see pi. 16, 

 fig. 4] but it probably represents a new genus. 



If the two figures I have copied on plate 18, figures 5 and 6 

 are at all accurate, Libnotes must ,be polymorphic. The last 

 figure is probably incorrect in its representation of the wing veins 

 near the costal border of the wing. 



Larva of Rhaphidolabis tenuipes O. S. 



In Beaver Meadow brook, just before the door of the water tent 

 described in preceding pages, I collected from among the round 



