1906.] 59 



(Plate I). f ^f'^, 

 EXPLANATION OF FIGURES. 



I, Reuterella helvimacula, Enderl. <? from Bognor specimen. Legs and 

 right wings and antenna not drawn x 20. 

 II. Do. Riglit posterior wing, showing absence of discal cross vein x 20. 

 III. Do. Part of right anterior wing showing imperfect vein of posterior 



areole x 20. 

 IV. Do. Fringe of posterior wing x 60. 

 V. Do. Thickening of costal vein and portion of radius with pterostigmal 

 tooth X 60. 



VI. Do. Terminal joints of antenna x 120. 

 VII. Part of left anterior wing of Chobham c? showing connection of radial and 

 median veins x 20. 

 VIII. Hind tarsus of Chobham ^ x 60. 

 IX. Terminal joints of antenna, $ x 120. 



X. Head and thorax of ? x 20 (antennae broken). 

 XL Antenna of Dr. Enderlein's ? x 40. 

 XII. Anal appendages of Dr. Enderlein's ? seen nearly laterally x 80. 

 XIII. Terminal abdominal segments of Dr. Enderlein's ? seen nearly laterally 

 x40. 



Dalkeith, Bognor, Sussex : 



January IQth, 1906. 



A NEW BRITISH FLEA: CERATOPRYLLUS INSULARIS, spec. nov. 

 BY THE HON. N. CHARLES ROTHSCHILD, M.A., E.L.S. 



(Plate II). 

 Similar to C. gallins;, Schrank. Black-brown. The metathoracic epimerum 

 bears five bristles (1, 3, 1). On the first abdominal sternite there are on each side 

 about six short hairs proximally of the post-median bristle. The first segment of 

 the fore-tarsus is shorter than the second, being almost square and bearing several 

 long bristles on the hinder-side. The first mid-tarsal segment differs from that of 

 all allied species in bearing on the hinder-side four pairs of long bristles and some 

 short ones. There are fewer hairs on the ventral surface of the first and second 

 hind-tarsal segments than in C. galUnx, the first segment bearing, in the new 

 species, three or four such hairs, and the second segment one or two. 



The eighth tergite (Fig. B.) has along the edge about 20 hairs, 

 the last three or four and one or two central ones being longer than 

 the others. On the lateral surface there are two long bristles near 

 the apical edge, one beneath the stigma, and one or two proximally 

 near the ventral edge (not drawn in figure). The eighth sternite 

 (Fig. A., viii. st.) bears ventrally before the apex a cluster of about 



