( 164 ) 



middle and concave between this angle and the apex (PI. VI. fig. 1, f). There is a 

 long heavy bristle at the angle, with a short one above it. Another small bristle 

 stands at the apical margin near the distal corner. The proximal i)ortion of the 

 ninth sternite bears a row of bristles at the ventral edge. The distal portion is 

 curiously curved, bearing a row of bristles at the ventral edge, which row extends 

 from the sinns of the sternite two-fifths of the way to the apex. 



Length : cj, 2-S mm. 



We have five specimens of this s])ecies, collected by Mr. G. F. Dippie :-- 



1 tS, Ked Deer, Alberta, Canada, August 4th, I'.Hil. Ecotom>/s gapijeri. 



4 cJcJ, „ „ „ April 28th „ „ saturatus. 



8. Ceratophyllus abantis spec. nov. (PI. VI. fig. 10). 



This is a paler insect than cumolpi and quirhii. 



Head. — The head agrees in the main with that of cicmolpi. The rostrum is 

 shorter, not reaching to the apex of the forecoxa. 



Thorax. — The mesothoracical sternum bears about six small hairs from the 

 upper end downwards. On the mesonotum there are four or five subapical hair-like 

 spines. The metanotum bears one or two apical spines on each side. 



Abdomen. — The numbers of apical spines on the first four tergites are as 

 follows : one, two, two, one. The dorsal bristles of the second row of the seventh 

 tergite stand close together, as in qidrini. The sternites are as in cuinol/ii, but 

 have rather fewer hairs in front of the long bristles. 



Legs. — The forefemur bears on the outer side six small hairs. The midfemur 

 has no lateral hairs on the outer side, and only one on the inner side. The hind- 

 femur bears one on the outer side and four on the inner side, apart from the ventral 

 snbapioal bristle. The mid- and hindtibiae bear on the outer side two rows of hairs, 

 the hindtibia bearing on the inner surface a row of five or six. The longer bristle 

 of the third dorsal pair of bristles of the hindtibia is longer than the subapical pair. 

 The first niidtarsal segment is proportionately longer than in eumolpi and quiriiu, 

 being hairy on the ventral surface, while the lateral bristles are not prolonged as 

 in those species. The measurements of the mid- and himltarsi are as follows : — 



I 



BCodified Segments. — S. The eighth tergite bears four bristles along the 

 dorsal edge from the stigma backwards, and on the side eight more, besides 

 two long ones which stand near the ventral margin, one above the other. The 

 eighth sternite (PI. VI. fig. lu) is dilated in the middle, being laucet-shaj)ed. It 

 bears two bristles at the tip and a row of hairs from the apex to the middle, besides 

 a number of very minute hairs. Tlie manubrium of the clasper is rounded iit the 

 apex. The process of the clasper (PI. VI. fig. 10, r) is club-shaped. The finger 

 is very large, being broadest at the apex, bearing near the distal edge three heavy 

 spines, of which the ventral one is long and acute, while the two others are less 

 than half the length and blunt. The third stands at the rounded apical distal 



