2 ARKIV FÖR ZOOLOGI. BAND 10. N:0 3. 



2. Pulex irritaiis L. (1758). 



1 $ Perth. 



1 5 On a Queenslander. 



1 5 Blackal Range, Queensland, 21th October. 



3. Cteiiocephalus felis Bouché (1835). 



2 J^J; 4 5$ from höst N:o 16 = Aepryprymnus rufe- 

 scens. 



7 $ 5 Cedar Creek, Queensland, April 1913. 

 1 § Atherton, January 1913. 

 1 $ No locality. 



4. Pjgiopsylla ochi Roths. (1914). 



1 $ Ölen Creek, Queensland, 3rd September 1913, from 

 Trichosurus sp. (probably a form of Tr. vulpecula). 



5. Pygiopsylla pavida sp. nov. (textfig. 1, 2, 3). 



J* $ Nearest to P. woodivardi Roths. (1904) and roihschildi 

 Rainb. (1905) having like these species two bristles of the 



anterior row on the fröns so 

 enlarged as to form short spi- 

 nes similar to the frontal spines 

 of Leptopsylla musculi. The new 

 species, however, differs consi- 

 derably from both allies in the 

 modified abdominal segments. 

 Moreover, the small hairs on 

 the side of fröns and the brist- 

 les on the abdominal sternites 

 are fewer in number. 



Modified segments. — J*. The 

 eigth sternite (textfig. 1) has 

 the ventral margin twice in- 

 dented, while the apical mar- 

 gin is deeply sinuate. This 

 sinus is fringed with bristles and 

 divides the segment into a 

 large upper lobe and a very 

 narrow ventral one. The process P of the clasper (text- 

 fig. 2) is very broad, its dorsal margin and apical angle being 



Fig. 1. Pygiopsylla pavida (f. 



