lOl.i.l 



m 



lateral pair of bristles of the fifth segment in all tarsi considerably 

 moved ()n to the ventral surface. Hindfemur with one lateral bristle 

 on the inner surface. 



(^ . Eighth tergite not rough with hair-like points along the 

 dorsal margin of the widened portion on the inner side ; it bears 4 

 long marginal bristles and 5 or 6 lateral ones on the outer surface. 

 Eighth sternite small, the horizontal oviter portion represented by a thin, 

 pointed, fringed, pale process. Process P of clasper (fig. 13) twice as long 

 as broad, measured from the pair of long bristles upwards to anterior 

 angle, it resembles the side-view of a very stumpy thumb. Finger 

 broad, very strongly dilated before the centre, and bearing at this 

 point two stout bristles, of which the lower one is the largest, its apex 

 being twisted and curved downwards ; near these bristles, on the 

 lateral surface, an obtuse spine ; further upwards two short pointed 

 bristles, and above the ixpper one of them a long bristle. Apex of 

 parameres very obtuse. 



? . Seventh sternite very deeply sinuate, both lobes narrower 

 than the sinus (fig. 14). Below stigma of eighth tergite one long and 

 two short bristles. Stylet a little over twice as long as it is broad. Head 

 of receptaculum seminis broad, elliptical, three times as broad as the 

 tail and somewhat longer than it. 



Widely distributed in the British Islands in the nests of birds 

 such as the wren (AnortJmra troglodytes) , grouse (Lagojms scoticiis), 

 the moorhen (Gallinula chlorojms), and many others. 



9. Ceratophyllus styx Baths. (1900). 

 (Figs. 15, 16). 



More hairy than the other ^\Y^-Ceratophylli, the long bristles 

 also being slenderer. Two rows of bristles in front of the eye, occiput 

 with one or two bristles near base of antennal groove, two above middle 

 of groove. Spines of pronotal comb shorter than pronotum. Second 

 to fourth abdominal tergites with three or four apical spines ; first 

 sternite with a number of lateral bristles. Upper and lower ante- 

 pygidial bristles minute in J* , in $ almost half tlie length of the 

 median one. Hindfemur on inside with a row of 6 to 8 bristles. Longest 

 apical bristle of first, second, and third hindtarsal segments reaching 

 to or beyond the apex of the segment following. 



(J. The bristles on the widened portion of the eighth tergite 



