QQ [March 



below the stigma and more than 30 on the ventral lialf. The stylet only 

 half as long again as it is broad. Receptaculum seminis slender, the head 

 more than three times as long as it is broad, half as long again and 

 half as broad again as the tail. 



Common and widely distributed in the nests of the house martin 

 {Chelidon urhica). Not recor<led from Ireland. 



12. Ceratophyllus rustiotjs Wagn. (1903). 

 (Figs. 21,22). 



Head with two rows of bristles in front of the eye ; on occiput 

 one bristle behind the base of the antennal groove and two above the 

 centre of the groove. Pronotal comb about as long as the pronotum 

 in the ^ and slightly shorter in the ? , measured at the sides. Apical 

 portion of metanotum reduced as in hirundinis, with the apical spines 

 vestigial or absent. 



(^ . Apical margin of eighth tergite (fig. 21) vertical, but distinctly 

 in-curved, the upper angle projecting as a strongly rounded lobe, at and 

 near the margin about 16 to 20 very long bristles ; the area of the 

 inner surface bearing hair-like points extends more than half-way down 

 to the ventral edge, but the points are less close together than is 

 usually the case. Eighth sternite long, with about six long curved 

 bristles at the apex on the two sides together ; the proximal, widened, 

 portion of this sternite rounded anteriorly, with the upper angle obtuse. 

 Pi'ocess P of the clasper three to four times as long (measured from 

 the pair of long bristles) as it is broad at the narrowest point. Finger 

 very much longer than P, anterior margin subangulate before the 

 middle, posterior margin straight, except base and apex, where it is 

 rounded, apical third with three rather stout and short pointed bristles 

 and above them a thinner bristle. 



$ . Seventh sternite (fig. 22) broadly rounded, slightly incurved 

 but without sinus, bearing more than 30 bristles. Eighth tergite with 

 more than ten bristles above the stigma and at least twelve below it, the 

 ventral area bearing more than 30. The apical dorsal angle of the 

 widened portion of the eighth tergite produced as a sharp beak. Head 

 of receptaculum seminis slender, about three times as long as it is 

 broad, and twice as long as the tail. 



A more or less rare species found in the nests of the house martin 

 (Chelidon urhica). Not recorded from Ii-eland. 



