( 487 ) 



being nninterrnpted on the baek, while the fourth comb is slightly interrnpted by 

 small dorsal mesial interspace ; the numbers of teeth are 43, 44, 47, and 41. The 

 tergites 1 to 7 all bear four rows of bristles, the anterior row being quite 

 irregular and partly doubled on tergites 2 to 7. There are three long apical 

 bristles on the seventh tergife, the middle one reaching nearly to the apex of the 

 last segment, the ventral one being only a little shorter, while the dorsal one is less 

 than half the length of the middle bristle. The apex of this segment is produced 

 between the two sets of apical bristles. The first sternite is very hairy ou the 

 sides and along the ventral margin. The following four sternites bear a row of 

 four or five long bristles and a jiatch of shorter ones in front of them, these long 

 and short bristles being more numerous on the seventh sternite. This sternite is 

 broadly and shallowly emarginate. 



Legs. — There are three bristles posteriorly at the apex of the mid- and hind- 

 coxae. The hindfemur bears ou the outer side a subveutral row of about nine bristles 

 and on the apical third of the outer surface about twenty bristles. The foretibia 

 has no stout bristles laterally at the apex between the stout dorsal and ventral 

 apical bristles as is the case in IJi/strichopsylla talpae. The hindtibia has eleven 

 or twelve dorsal incisions bearing stout bristles. The outer surfaces and ventral 

 edges of the tibiae are hairy, while the inner surfaces are bare of hairs. The longest 

 apical dorsal bristle of the midtibia reaches a little beyond the apex of the tirst 

 tarsal segment, while that bristle of the hindtibia does not reach the base of the 

 Rubapical pair of bristles of the first tarsal segment. The fifth tarsal segment is 

 proportionally shorter than in //. talpae, and the dorso-lateral bristles of this 

 segment are much longer. The measurements of the mid- and hindtarsi are as 

 follows : — 



Modified Segments. — The eighth tergite (PI. XIV. fig. 10) is triangular, with 

 the apex rounded otl'. It bears very numerous bristles, as shown in the figure. 

 The bristles are somewhat variable in number and jiosition. The eighth sternite is 

 aiij)arent]y altogether absent. The jdate belonging to the ninth segment, being 

 situated between the eighth tergite and the sensory organ, is very distinct (PI. XIV. 

 fig. 10, ix. t.). The stylet is subcylindrical, becoming slightly narrower from the 

 base to the apex. 



Length : 5-2 mm. 



We have two ? specimens of this species from Lanuceston, Tasmania, one 

 from Mus velutinus and the other from Mus spec. ?, both collected by Mr. A. Simson. 



Uropsylla gen. nov. 



?. The ventral margin of the head is dilated behind the palpus into a rounded 

 lobe projecting downwards (PI. XIV. fig. 11). This lobe bears two bristles which 

 form a continuation of a row of three of which two are situated beneath the eye and 

 one behind it. The eye is very large and stands at the antennal groove. The genal 

 process is, immediately behind the eye, dilated into a truncate flaji which partly 

 covers the club of the antenna. The tirst segment of the antenna is very large, 



