XVI.— Siphonaptera from Borneo. By Dr. 



K. Jordan and the late Hon. N. Charles Roth- 

 child, M.A. 



The collection of Siphonaptera submitted to us Eoi' study by 

 Dr. E. Mjoberg consists of four species obtained by him on a 

 recent expedition to Mt. Murud and Mt. Dulit. So little is 

 known of the Bornean Siphonaptera that no fewer than three 

 out of the four species are new to science. As was to be 

 expected these new fleas are nearly related to forms described 

 from other parts of the Malayan subregion. 



Dr. Mjoberg" has kindly permitted us to retain the types 

 for our collection, which will ultimately be incorporated in 

 that of the British Museum. 



1. Ctenocephalus canis Curtis (1826). 



One specimen found in the jungle at Mt. Dulit, 3500 feet. 



2. Ceratophyllus corneensis nov. sp. (Figs. 1, 2, 3). 



cf 9 . Closely related to C. agathus J. & K., Ectoparasites 

 1, p. 225, No. 6, text fig. 219 (1922), from Sumatra, which is 

 only known from a single 9 obtained by E. Jacobson. The 

 present species differs in the tail end. 



cf . Seventh abdominal tergite with a short median dorsal 

 process, which, in a lateral aspect, is slightly lanceolate. 

 Eighth tergite (fig. 1) large, as in G. idoneus Eoths (1919), 

 G. fimhriatus J. & E. (1921) and allied species, bearing a 

 dorso-apical row of 9 to 11 bristles, 5 to 7 lateral ones, and 



Sar. Mus. Journ., No. 10, 1926. 



