new or little-known Tipulidae. 469 



liypopygluin with the armature unusually developed even for 

 a member of this genus ; three powerful chitinized a|)i)eiid:iges 

 on either side, the longe^st and most powerful of which ia 

 enlarged apically into a two-edged complicated head. 



Hah. Cameroun. 



llolotype, cJ, Olama, alti'tude 2000 feet, July 24, 1919 

 {J. A. liein). 



CeratolimnOBIA, gen. nov. 



Vertex bcdiiud the antenna! bases with a flattened white 

 lobe or cornicle. Tibia3 unspurred. Wings with Sc long, 

 Sc2 close to the tip of Sc^ ; tip of T^j atrophied or nearly so ; 

 cell 1st ^^2 closed ; basal deflection of Ctti before mid-length 

 of cell 1st M.2. Male hypopyginm small, with two })lenral 

 appendages, the longest recurved into a U, at the bend of 

 which is a cylindrical minutely branched arm. 



Genotype. — Ceratolimnohia munroi, sp. n. (Southern Ethio- 

 pian Region). 



By means of all existing keys to the Tipulidae this crane- 

 fly "would run to the genus Onophomyia, to which it is 

 obviously not closely allied. Gnophomt/ia is gradually 

 becoming a receptacle for many diverse Eriopterine elements, 

 and it seems advisable to remove the present fly from such 

 an incongruous gathering and erect a separate genus for it. 

 The presence of a snowy-white corniculus, much as in the 

 Ethiopian species of the genus Cerafocheilus, Wesche, offers 

 the most ready means for distinguishing this geims from 

 similar crane-flies. 



Ceratolimnohia munroi, sp. n. 



Head light grey, with a snowy-white cornicle on the 

 vertex ; general coloration dark brown, the mesonotal prae- 

 scutum narrowly margined laterally with silvery white ; legs 

 dark brown, the ti))3 of the femora and tihite narrowly white, 

 the fore tarsi largely white ; wings dusky, the costal region 

 more yellowish, with six largo dark brown blotches; veins 

 beyond the cord broadly seamed with brown. 



Male. — Length about 2"7 mm. ; wing 3'8 mm. 



Rostrum and |)alpi bhuk. Antenna* witii the scapai 

 segnients black ; flagfdlum broken. Head with a light grey 

 pubescence, tiic middle of the v<Mtex and the postgiMire more 

 blackish ; on the lore jiart of the vertex immediately behind 

 the antennal bases and between the anterior end of the eyes 



