iflo.s.] 87 



tarsus is very lonp;, being nearly as lonp; aa the seconrl, tliird and fourth segments 

 together. The first segment of tlie mifl tarsus is less than half the length of the 

 second, while that of the hind tarsus is about the same length as the second, the 

 longest apical bristle of the latter reaching nearly to the claw. The fourth segment 

 of the hind tarsus is triangular, being but little longer than it is broad. In the 

 male, the clasper (fig. 11«) bears three slender cylindrical processes, and the ninth 

 sternite (fig. 11 S) is narrow, pointed, and with the extreme end curved upwards. 

 The plate of the penis (fig. 15) is broad and rounded at the end ; the distal 

 armature bearing a kind of brush. In the female, the eighth tergite (fig. 16) is very 

 distinctive, it bears about ten rather thin and short hairs at the apical edge, and in 

 addition three more on the proximal poi-tion. The length = 1'86 — 2"86 mm. 



We received sixteen specimens of this species from Mr. Harry 

 F. Witherby, who took them from Erinaceua alhiventrin , near Gebel 

 Auli, on the White Nile, in May, 1900. In addition to these, we 

 secured twenty-nine specimens from Shendi : —Erinaceus cefMopicus, 

 9 s|)eciinens ; Vnlpex niloficufi, 19 specimens ; TTj/trna Jiycenn, 1 

 specimen. 



EXPLANATION OF PLATES. 

 PLATE I. 

 Fig. l.— Ceratopsylla mgyptius ; ns^, «.«-= first and second abdominal tergites ; 

 ep = metathoracic cpimeron. 



„ 2. — Pulex Witherlyi. Hind femur, tibia, and first tarsal segment, from outside. 



„ 3. — Pulex cheoph. Hind tibia, and first tarsal segment, from outside. 



„ 4. — Pulex cleopatrce. Second to fifth hind tarsal segments 



„ 5. — Pulex Witherby i. Hind coxa from inner side. 



„ 6. — Pulex Witlierhyi. Eighth abdominal tergite of ? . 



„ T. — Pulex chephrenis. „ „ „ „ 



„ 8.- -Pulex cleopatrrs. „ ,, „ „ 



„ 9. — Pulex cheopis. „ „ „ „ 



PLATE II. 

 Fig, 10. — Pulex nubicus, <? ; a, clasper ; b, ninth sternite. 



„ 11. — Pulex Witherbyi, c? ; „ „ „ „ „ 



„ 12. — Pulex cheopis, <? ; „ „ „ ,, „ 



„ 13. — Pulex cleopatrcE, ^ ; „ „ „ „ 



„ 14. — Pulex chephrenis, J; „ „ „ „ 



„ 15. — Pulex Witherbyi, $ ; penis. 



„ 16. — Pulex nubicus, <? ; plate of penis. 



„ 17. — Pulex cleopatriB, ^ ; ,, ,, „ 



„ 18. — Pulex chephrenis, (J ; „ ,, „ 



„ 19. — Pulex cheopis, $ ; „ ,, » 



Tring Park, Tring : 



January, 1003. 



• This species was mentioned by name, although not described, in " Bii-d Hunting on the 

 White XUe," p. 60, by Harry F. Witherby. London : Office of Knowledge, 1902. 



