72 



Mr. A. W. J. Pomeroy on new 



Bartonian, Lower Bagshot, Corfe Clay, Creech, between 

 Corfe and Wareham, Dorset ( W. R. Brodie, 14). British 

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

 Becklesin 1891. 



Fi<r. 10. 



Evotylites wallacei, sp. n. 



The shape of the elytron is like that of Cypherotylus 

 aspersus, Gorham (Erotylidse). The general form is rather 

 suggestive of Tenebrionidse, but the apex is different. 



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

 Corfe in his company many years ago. 



IV. — New Species of African 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 Simutium 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, 



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

 March 6, 1916, p. 24. 



