( 177 ) 



when tkt; gt'ims was established in this work, and it was not corrected, as the 

 author intended, in the Guide." 



From these quotations it will be clear (1) that Ceratopsijllus was merely a 

 well-meant correction of the term Ceratoplnjllus; (2) that Ccratopsi/llus, thervi'oret 

 is an absolute s}'nonym of CeratophijUiis, the type being stated by Curtis to be 

 C. hinmdiitis ; * and (3) that the correct name for the bat fleas is Westwood's terra 

 Iscknopsijllus. 



Dr. Baker gives GeratopsijUtis priority over [schnopsyllus, dating the former 

 erroneously 1832. He quotes in Proc. U.S. iVat. Mks. xxvii. p. 432 (l'JU4) as 

 follows : — 



1832. Cei'utopsi/llus Curtis, Britisk Eiitomolof/i/ x. 



1833. Ceratopsyllus AVestwood {Ischiopsi/llus), Eiit. Mo. Mag.., I. p. 359. 



Both quotations are wrong. There is no reference to a bat flea in British 

 Entomolwjij x., which appeared in 1833, not 1832. Westwood in the Entomological 

 Magazine (not Ent. Mo. Mag., the first volume of which was pul>lished in 1804-5) 

 does not mention the term Ceratopsgllus, which, as said above, dates only from 

 1838. 



Weyenbergh described one species of Iscknopsglliis : 



5. Ischnopsyllus isidori. 



Ceralophyllus isiduri Weyenbergh, Period. Zool. iii. p. 271 (1881). 



The species is closely allied to I. irolff'solud Rothsch., Nov. Zool. x. p. 321. n. 5. 

 t. '..I. fig. 13, t. lU. fig. 14. 15. 16 (10U4). The frous of the head is rather longer 

 and move pointed ; the posterior row of bristles of the metanotum of the c? is 

 normal, being similar in the sexes ; the metanotum and first abdominal tergite are 

 devoid of the two short spines standing in woljfsohni on each side at the apex of 

 these segments, etc. 



Found on Vespertilio isidori Gerv. 



* Haker, Proc. U.S. yat. Mit.'<. xxix. p. 129 (11)U5), erroneously makes gaUitiar the type of 

 C't'rtittiji/iijllu.'i. 



12 



