APPENDIX. 563 



Clypeus conically produced as in Tipula. Leys: all the femora 

 bear, on the upperside, towards the tip. a transverse row of 

 distinct strong comb-like equidistant deep black spines. Wings : 

 the 1st longitudinal vein ending in the 2nd longitudinal vein just 

 before tbe latter forks, and not in its short upper branch as in 

 Tipula ; the usual small cross-vein (costal cross-vein) between the 

 costa and the 1st longitudinal vein (near its tip), present; the 2nd 

 longitudinal vein (following its whole course from its base to the 

 tip of the lower branch) is conspicuously trisinuate, the lowest 

 part of the lower branch being closely approximate to the middle 

 of the 3rd vein; the 7th vein much shorter than in Tipula, but 

 attaining the wing-margin. Venation otherwise as in Tipula, 



Itange. Sumatra, Darjiliug. 



The spined femora afford a very clear distinction fron Tipula. 



It has seemed advisable to redescribe this genus, partly because 

 Dr. Enderleiu adopts the (to me) objectionable Cornstock-Needham 

 system of venation ; and also because he has mistaken the tip of 

 the 1st longitudinal vein for a continuation of the small cross-vein 

 connecting that vein with the costa. The 1st longitudinal vein in 

 TIPULIX^E turns down into the 2nd vein, meeting this latter 

 usually just beyond the fork, near the base of its upper branch, as 

 explicitly stated by Osten Sacken in his Monograph of the North 

 American TIPULID.E BUEVIPALPI (p. 290). Moreover, Dr. Enderlein 

 speaks of the discal cell being " petiolate," an expression which 

 seems misleading, unless he refers to the petiole of the 2nd 

 posterior cell. 



Ctenacroscelis sikkimensis, End. 



Ctenacroscelis sikkimensis, Enderlein, Zool. Jahr. xxxii, p. 4 (1912). 



J . " Head clear brownish yellow ; frons more ochraceous, with a 

 median impressed line ; the elongate proboscis nearly twice as long 

 as the rest of the head. Palpi brown; antenme 12-jointed, clear 

 brownish yellow, the first two joints [=the scape] ochraceous, the 

 inner side of each scapal joint curved, the outer side straight. 

 Antenna? 4 niillim. long, the head 5 millim. long. Thorax clear 

 ochraceous yellow ; dorsum on anterior half, except at the sides, 

 dark greyish brown, with three indistinct yellowish stripes ; at the 

 sides of the prothorax a narrow brownish stripe towards the base 

 of each wing. Metapleura with a brown spot anteriorly ; pro- 

 thorax wholly ochreous. Scutellum very flat, clear. Metanotum 

 clear brownish yellow, with a greyish tinge. Abdomen greyish 

 brown above, with a median yellowish stripe; belly pale brownish 

 yellow. Legs clear brownish yellow, tips of femora brown ; claws 

 black, rather strong, with a moderately thick tooth at the base ; 

 all the other basal joints * somewhat emarginate on underside. 

 Wings grey brownish, costal cell a little darker ; the space between 



* Presumably exclusive of tbe ultimate joint. 



2o 



