( 652 ) 



38. Ctenopsyllus hyrtaci spec. nnv. (PI. XVI. fi;;. 0','. 9:")). 



This species is closely allied to C. /ii/f/i/ii, l)ut differs in the following cliaracters : 



Thorax. — The cf has thirt3--four s])ines iu the comb of the prothorax. 



Legs. — The mid- and hindtibiae have, in addition to the regular lateral row of 

 eight bristles, two or three more bristles situated on the ventral side of that row. 



Uodified Segments.— The apex of the clasper (PI. XVI. tig. 9',') is strongly 

 ronnded, bearing a row of hairs. There are no bristles in the proximal three- 

 qnarters of the dorsal edge, while there are several short hairs on the enter surface. 

 The patch of minute hairs situated on the outer surface is indicated in the figure 

 by dots. The finger (f) resembles somewhat that of C. f/roo/isi, but is widest 

 near the ajiex. The ninth sternite is, however, very different, being gently curved 

 and bearing a much smaller number of hairs, as shown in the figure. The tenth 

 tergite has one moderately long bristle at the apex, and the sternite two much 

 longer ones. 



The eighth tergite of the ? (PI. XVI. fig. 95) bears four bristles ventrally near 

 the base, and the seventh sternite is shallowly qmarginate. 



Length, 2'4 mm. 



We have four specimens of this species, as follows : — 



1 c?, Cariboo, British Colnmbia, March 31st, 1001, from Putorius cncnjumenos, 

 collected by Allan Brooks. 



2 c? cf , British Colnmbia, from Sorex obscurus, collected by W. Wenmann. 

 ■^ +> )i » >> II 11 i> I) 11 



39. Ceratopsylla palposus spec. nov. 



Head. — The anterior flap of the head is not quite three times as long as broad 

 at the base. The second flap is widest beyond the middle, being apically more 

 strongly rounded in front than behind. The hairs of the frontal row are small, 

 the posterior ones being the longest. From the middle of the antennal groove 

 forwards there is a row of three or fonr bristles, and beneath this a row of very 

 minute hairs, besides the long bristle situated at the antennal groove below the 

 middle. On the hinder part of the head there are the following hairs : three or 

 four very minute ones along the antennal groove ; three or four somewhat larger 

 ones ventrally at the apical margin ; above these a very long subapical bristle, 

 followed npwards by an apical row of rather short bristles ; between the long 

 bristle and the base of the antennal groove there are three bristles, one in the 

 middle and two more forward. On the back of the posterior part of the head 

 there are a number of minute punctures bearing excessively short hairs, hardly 

 visible as such. 



Thorax.^The pronotum bears two rows of bristles and a comb of twenty-two 

 teeth. The mesonotum, which is much longer than the metauotum, bears four more 

 or less irregular rows of bristles, besides a basal row of short spine-like ones. There 

 are laterally before the apex two slender spines. The mesothoracical ej)isternum 

 and epimerum bear together eleven to thirteen bristles, of which three stand above 

 the stigma. The metathorax has three rows of bristles, the first and third row 

 being incomplete, and bears on each side three short apical spines. On the 

 epimerum of the metathorax there are seven bristles (2.2.3), of which the first and 



