the outer surface about six loug bristles at aud near the edge and thi'ee ou 

 the sides. Eighth sternite (fig. 29 ) long, evenly curved, its armature very 

 characteristic, consisting of about half-a-dozen very stout and pointed 

 apical spiuiforni bristles ; the internal dilated portion of this sternite 

 boot-shaped with the toes pointing upwards and somewhat anad. The 

 process P of the clasper twice as long as broad ; the finger much longer 

 than P, on the anterior side angulate above the centre, on the posterior 

 side ueaiiy straight from near base to near apex, more than three times 

 as long as it is broad, with five marginal bristles in the apical half. 



? . Seventh sternite (fig. oO) not sinuate, but truncate, with margin 

 slightly incurved and the upper angle more projecting than the lower. 

 Eighth tergite with five to seven bristles above the stigma, a row of 

 three below tlie stigma and less than twelve bristles on the ventral 

 area of the outer surface, inclusive of the apical bristles. Stylet about 

 three times as long as it is broad. Head of receptaculum seminis 

 elliptical, twice as long as it is broad and as long as the tail, which is 

 a little more than half the width of the head. 



Not uncommon both in England and Scotland in the nests of 

 both the wild and domestic rock dove (Coluniha livia). Not recorded 

 from Ireland. 



16. Ceratophyllus vagabunda Boh. (1866). 

 (Figs. 31, 32). 



Pronotal comb one-third shorter than the pronotum measured in 

 the centre of the sides. Apical area of metanotum slightly but dis- 

 tinctly shorter than of mesonotum, the edge minutely dentate and the 

 spines much reduced in width, in ^ ,\i. present, more like bristles in 

 appearance. Hiudfemur with a lateral row of six or more bristles on 

 innei- surface. 



(^ . First midtarsal segment on liindside with several long 

 bristles, the apical bristle reaching to apex of second segment. Rough 

 area ou inside of eighth tergite a little narrower than the finger. Ou 

 outside of eighth tergite are about 28 bristles on upper area pos- 

 teriorly to stigma, of which about 18 are placed at or near the margin ; 

 on ventral area one long bristle. Eighth sternite (fig. 31) long,measured 

 ventrally twice as long as the first hindtarsal segment ; at apex on 

 both sides together, about 8 slender curved Ijristles, which are less than 

 half as loug as the finger. Process of clasper short, obtusely tri- 



