NO. 2103. JAVANESE CRANE-FLIES—ALEXANDER. 181 



It can readily be seen that the differences between Tijmla and 

 Ctenacroscelis are very shght and consist of the great arcuation of i?, 

 and the consequent narrowing of cell R^ near its middle and the 

 presence of a ctenidium near the tips of the femora. Some species of 

 Tijmla (pedata Wiedemann) have the ctenidium very poorly defined, 

 the individual spines taking on the appearance of stout hairs; it is 

 easy to figure out a transition into a perfectly normal Tipula. 



Genus PRIONOTA van der Wulp. 



Prionota van der Wulp, Notes Leyden Museum, vol. 7, 1885, p. 1. 



PRIONOTA NIGRICEPS van der Wulp. 



Prionota nigriceps van der Wulp, Notes Leyden Museum, vol. 7, 1885, p. 2; 

 Tijdschr. voor Entom., vol. 28, 1885, p. 82, pi. 4, figs. 3, 4. 



One male, Mount Salak, Java, May 15, 1909; one female, Tjibodas, 

 Mount Gede, Java, April 20, 1909 (Brj^ant and Palmer). The speci- 

 mens may be further described as follows: 



Male. — Length, 15.8 mm.; wing, 14.8 mm.; antenna, 6.8 mm. 



Female. — Length, 33 mm.; wing, 22.5 mm. 



The wing is shown on plate 45, fig. 34. 



The male hypopygium is short and subglobular, the 9th tergite 

 from above (see pi. 47, fig. 51) almost bifid by a very deep notch, the 

 lobes black with long dense black hairs. 9th tergite and pleurite 

 fused into one compact mass (see pi. 47, fig. 52), the pleural portion 

 rounded with a few scattered black hairs. Pleural appendage large, 

 flattened, rather oval, the ends somewhat pointed; the appendage is 

 densely covered with gray hairs so as to present a silvery appearance. 

 9th stemite large, not projecting caudad of the pleurite. 



The curious antennae whence van der Wulp derived his generic 

 name are figured on plate 47, fig. 50. 



It is hard to understand why Doctor Enderlein ^ insists upon plac- 

 ing Prionota as a synonym of Prionocera Loew ( = Stygeropsis Loew). 

 The two genera have very little in common, the antennae of Prionota 

 being provided with bristle-like hairs, those of Stygeropsis quite naked 

 except for the usual pubescence. Prionota has a remarkable hypo- 

 pygium in the male sex, the 9th tergite deeply bilobed, the tergite 

 fused with the pleurite, etc. Stygeropsis has a perfectly normal 

 Tipuline hypopygium with the 9th tergite quite distinct from the 

 pleurite. The character of the serrations on the antennae is quite 

 different in the two genera. It is also hard to understand why the 

 name Prionocera is used. This name, proposed by Loew in 1844, is 

 preoccupied by the same name used by Shuckard in the Coleoptera 

 in 1839.2 



» Zool. Jahrb., vol. 32, pt. 1, 1912, p. 2S. 

 i Elements of British Entomology. 



