( 56 ) 



Museum nntler tlio name of monoclenus. Tliat it is tlie original for the drawing 

 there can be no doubt, since the genitalia jnotrnde in the s[)ecimeu in the way 

 indicated in the fignre. The species is the same as the one which we described 

 in 19IJ9 as Ctenopsyllus sobrinus (Ent. Mo. Mag. (2) xx. p. 186). 



The question now arises if inonoetenus or bidentatus should be employed as 

 the name of the species. As Kolenati himself treats monoctenus as a synonym of 

 bidentatus, we have to consider the two names as applying to one and the same 

 species, there being no evidence to disprove the correctness of Kolenati's own 

 contention, and we must consequently accept the older one of the two names — 

 i.e. monoctenus — as the name of this species, although the original characterisation 

 is excessively meagre. 



Kolenati, in Parasit. Chiropt. p. 32, also refers to Pulex respertilionis of 

 Duges and of BouchS, and remarks that it is impossible to say which particular 

 species these authors have described, which remark still holds good to-day. 

 Kolenati, however, erroneously quotes " Diiges in Aii/i'il. des Sc. nat. Tom. vi. 

 ls3U. Zool. i)ag. 130," where uo tiea is mentioned. 



List of specimens of bat-fleas from the Kolenati collection contained in the 

 collections of the British Museum and the Bluseams at Paris, Berlin, and 

 Vienna : 



1. Ischnopst/Uus octactenus Rolen. (1850). 



Paris Museum : 1 c?, 10 ? ¥. As octactenus. 



British Museum : 1 ¥ , old Register, Nos. 56, 1G3. As octactenus. 



Berlin Museum: 1 J, 2 ? ?. As octactenus. 



2. Isclinopsyllus intermedius Roths. (1898). 



Paris Museum : 2 c? cJ, 2 ? ? . As octactenus and hexactenus. 

 Berlin Museum : 1 ? e.K coll. H. Loew, carded. Perhajis not from tlie 

 Kolenati collection. No name on the pin. 



3. Ischnopsi/Uus elonga.tus Curtis (1832). 



Paris Mnsenm : 1 J, 2 ? ?. As octactenus. 



4. Ischnopsi/llus obscura Wagn. (1897). 



Paris Mnseum : 1 (?. As octactenus. 



5. Tschnopsijllus hexactenus Kolen. (1850). 



Paris Musenm : 4 <?(?, 4 ? ?. As tetractenus and hexactenus. 

 British Museum : 1 ¥, old Register, Nos. 50, 103. As hexactenus. 

 Berlin Mnseum: cJc?, 4 ? ?. Some in Kolenati's vials; otiiers only 



marked "Coll. H. Loew." 

 Vienna Museum : three s])ecimens. As hexactenus. 



6. Nycteridopsi/lla pentactenus Kolen. (1850). 



Paris Musenm : 2 ? ¥ . As ptentactenus. 



7. Nycteridopsijlla eusarca Dampf (1908). 



Paris Mnseum : 3 ¥ ¥ . As pentactenus. 



I'.erliu Musenm : 1 (?, 1 ¥ . As pentactenus and tetractenus. 



Vienna Museum : seventeen specimens. 



8. Nycteridopsylla dictenus Kolen. (1856). 



Paris Mnseum : 1 cj, 1 ¥. A» dictenus. 



