( 324 ) 



numbers of sjiines in the cumbs, tlie iminbers being in the male 23, 2, 20, 16, IC, 

 13, 13, and in ihe femali- IT), — , 13, 11, 10, 10, 10. It will be noticed from these 

 figures that, in contradistiiiction to C. caminae, the male has more spines than 

 the female. The metathoraciciil ejiimernin of the female has a few more proximal 

 hairs in rerluctus, while the eighth tergite of reductas has a few less than caminae. 

 The eighth sternite of the male bears fewer hairs at the apex than in caminae, 

 and the nat-rowed apical portion is shorter than in that species. There are 

 ajijiarenth- no differences in the clasping organs of the two species. 



We received one pair from Mr. Le Soui'f, taken in Melbourne, Victoria, ou 

 Vespertilio macropus. 



9. Ceratopsylla fosteri spec. nov. (PI. X. fig. 23 — 26). 

 Head. — The head and thorax are long. The anterior portion of the head is 

 about as long as the posterior, being covered at the sides with numerous spines 

 (fig. 23). Those near the antennal groove are strongly chitinised. The spinose 

 area covers the upper two-thirds of the lateral surface of the head. There is a 

 series of about ten short and stout bristles on the hinder part of the head along 

 the antennal groove. The hinder part of the head (like the three tergites of 

 the thorax) shows several incrassations internal!)', which appear in optical section 

 as dark brown bands. The two flaps of the head are neither acuminate nor 

 curved. The anterior one is broad, Ijeing about twice as long as it is basally 

 wide. 



Thorax. — The pronotnm is shorter than it is apically broad (teeth excepted), 

 and bears a comb of twenty-four teeth (fig. 23). The mesonotum and metanotum 

 are about eijual in length, their bristles being stout like those of the prothorax. 

 The comb of the metanotnm consists of twelve teeth. The cpiraernm of the 

 metathorax is longer thau it is broad, acuminate, and bears three bristles below 

 the stigma, standing in a triangle, the posterior of them being the longest. In 

 addition there is one bristle behind the stigma and one at the apical angle. 



Abdomen. — The bases of the tergites are incrassate internally. The four 

 combs on the abdominal tergites consist of 21, 16, 17 and 16 teeth respectively. 



The abdominal sternites are also incrassate internally near the base. Those 

 of segments 5 and 6 have three bristles on each side. The sternite of the 

 seventh segment of t\\t!. female is irregularly triangular in lateral view, and bears 

 nine or ten hairs on each side. The eighth sternite of the m.ale is elongate, and 

 bears ventrally before the apex a number of sliort hairs (fig. 24, cvVV. «/.). 



Legs. — The first segment of the foretarsus is as long as the second. 



The first segment of the midtarsus is one-fourth longer than the second. 

 The midcoxa is as broad as it is long. The mid- and liindfemnr have some hairs 

 ventrally near the base, but none on their lateral surfaces. The tibiae are short 

 when compared with the tarsi. 



The hindtiliia has on the outer surface one row of rather long hairs and 

 several hairs on the inner surface. At the hinder edge of the hindtibia there 

 are six pairs of bristles. The hindtarsus is two and a half times as long as 

 the hindtibia ; its fourth segment is only slightly over half as long again as it is 

 ajiically broad. 



Modified Segments.— The process P (fig. 25) of the clasping organ of the 

 male is large, triangular, and bears on the lateral surface a number of stout 

 bristles. The finger F (of which the exact outline cannot be very clearly made 



