252 PLECIA TRISTIS. 



rather long stem. Wings brownish; their ueuration agree- 

 ing with that of PI. fulvicollis. 



A female from Mount Ardjoeno : East-Java (Hekmeyer). 



Fam. Tipulidae. 



Of this very extensive family the Leyden Museum has 

 received several exotic forms , for the most part of large 

 size. The minute ones , which undoubtedly are innume- 

 rable in the tropical regions, are almost wholly neglected. 

 The species of the genus Ctenophora , especially, are not 

 rare in collections , which come to us from the East- 

 Indies. Including the three new species , which will be 

 described hereafter , there are at present , as far as I know , 

 no less than sixteen described species in this genus. In 

 order to facilitate the determination of these species , I 

 have composed the following dichotomous table, which 

 must be considered as a first attempt , as I had but limited 

 materials at ray disposal, and hence was obliged to insert 

 most of the species merely according to the descriptions. 



Gen. Ctenophora. 



1. Tibiae, at least the hind ones, 



with a pale coloured ring at 



the base 2. 



Tibiae without this ring . .11. 



2. Wings yellow with a brown tip 3. 

 Wings brown or blackish , either 



unicolorous or with light spots 5. 



3. The hind tibiae with a pale ring . . arclens , Wied. 

 All the tibiae with a pale ring 4. 



4. Hind tibiae straight compedita, Wied. 



Hind tibiae strongly curved . . . curvipes, n. sp. 



5. Body reddish-yellow with black 



markings 6! 



Body velvety black with yellow 

 jnarkings 9. 



6. Wings with a light longitudinal 



band in the middle . . . 7. 



Notes from tlie Leyden ÜVIuseum , "Vol. VI. 



