ON THE NEW TIPULID SUBFAMILY CERATOCHEILINiE. H55 



Fig. 13, Fhyllodromia furcifera, sp. n,, apex of abdomen of male from beneath. 

 a, genital style. 



14. Fhyllodromia bultica, sp. n., apex of abdomen of male from beneath . 



15. Fhyllodromia klchsi, sp. u., „ „ >7 v 



16. Front femur of Fhyllodromia antiqim, ventral aspect. 



17. „ Fhyllodromia lorenz-meyeri, ventral aspect. 



18. Pronotal pattern of Fhyllodromia germari. 



19. „ ,, Fhyllodromia pristina,s^. \\. 



Plate 48. 



Fig. 20. Ceratinoftera crventa^ sp. n. 2 • 



21. Polyphaya fossilis, sp. n. S larva. 



22. Holocompsa fossilis, s-p. n. S . 



23. Perisphseriine larva. v 



On the new Tipulid Subfamily CERATOCHEiLiNiE. 

 By W. Wesche, F.H.M.S. (Communicated by John Hopkinson, F.L.S.) 



(Plate 49.) 

 [Read 18th November, 1909. J 



In 1903 the Linnean Society honoured me by publishing a number of 

 observations on rudimentary — or, rather, vestigial — maxillary palpi in various 

 Muscidse. 



From West Africa has now appeared a small group of the older Nemato- 

 cerous Tipulidse, the species of which have been found by two collectors in 

 Southern Nigeria and Ashanti, with the labial palpi developed, and, contrary 

 to the rule in all known Tipulidse, the maxillary aborted. 1 now propose to 

 describe this remarkable subfamily, as it presents fresh evidence that the 

 thesis formulated in the former paper, that the single pair of developed palpi 

 found throughout Diptera are not homologous, is correct. 



While in Southern Nigeria, Lt.-Col. F. Winn Sampson made a number 

 of preparations of insects for the purpose of studying the hair-structure. 

 Among them were three, mounted whole without pressure, of a small 

 Tipulid which carried remarkable bifid hairs on the legs. When 

 examining these, I noticed that not only were the flies remarkable 

 for the hair-structure, but that they had many other peculiarities. The 

 mouth-parts were far removed from the normal Tipulid type, and differed 

 in most respects from the specialized type found in Geranomyia. The 

 venation differed, and later on was seen to be in an unsettled condition ; and 

 the antennae were quite characteristic, and also presented abnormalities, as 

 the male appeared in one species to have eight joints, and the female eleven. 



