72 



Mr. A. W. J. Pomeroj' 07i nevi 



Bartonian, Lower Baosliot, Corfe Clay, Creecli, between 

 Coife and Waieham, Dorset ( TF. B. Brod'ie, 14). British 

 Museum, 19047. Purchased from the executors of H. S. 

 B.'ckles in 1891. 



Fiff. 10. 



Eiotylites wallacei, sp. n. 



The shape of the elytron is like that of Cypherotylus 

 aspersi/s, Gorhani (Erotylidre). The general form is rather 

 suggestive of Tenebrionida?, but the apex is different. 



Named alter Dr. A. 11. Wallace, in memory of a visit to 

 Corfe in his company many years ago. 



IV. — Neiv Species of Africati Simuliidse. 

 By A. W. J. PoMEROY, M.B.E. 



[Plates III. & IV.] 



In a previous paper ^ the writer pointed out the importance 

 of the respiratory filaments of the pupa of Simu/ium as 

 specific characters in distinguishing closely allied species, and 

 an extended series of observations on African species con- 

 firms this opinion. In addition to the differences of the 

 formation of the branching of the filaments, what may prove 

 to be a very important clue to generic character has been 

 observed, namely, the composition of the chitinous mem- 

 brane of the filaments themselves. In some species the 

 chitin is in the form of "scalloped " plates welded together, 



* Pomerov, Bull. U.S. Dep. Agric. no. 329, Professional Paper, 

 March 6, 1916, p. 24. 



