468 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvii. 



PULEX TERRESTRIS Macquart. 



1831. Macquaet, Ann. d. Scienc. Nat., XXII, p. 465. 

 1844. Gervais, Hist. Nat. d. Ins. Apteres, III, p. 375. 



1874. RiTSEMA, Regensb. Correspondenzblatt, XXVIII, p. 76. 

 1880. RiTSEMA, Zeitschr. f. ges. Naturwiss., LIII, p. 182. 



Listed b}^ Taschenberg as a possible s}' nonym of Ilystrichopsylla 

 taljxB. 



PULEX VAGABUNDA Boheman. 



1865. BoHEMAN, Ofvers. of K. Vet. Akad. Forh., p. 576, fig. 

 1874. RiTSEMA, Regensb. Correspondenzblatt, XXVIII, p. 80. 

 1880. RiTSEMA, Zeitschr. f. ges. Naturwiss., LIII, p. 185. 



Taschenberg" considers this as questionably /awm^i^s. 



PULEX VESPERTILIONIS Duges. 



1832. DuGEs, Ann. d. Scienc. Nat., XXVII, p. 161, fig. 



Considered by Taschenberg as questionably octactenus Kolenati. 



PULEX VESPERTILIONIS Bouche. 



1835. Bouche, Nov. Act. Acad. Leop. Carol., XVII, Pt. 1, \k 508. 



Apparentl}^ not the same as last, and Taschenberg lists it as a possi- 

 sible s3"nonym of Tiexactenus Kolenati. 



APPENDIX. 



Just as the foregoing paper is going to the printers I have, through 

 the kindness of. Mr. Rothschild, been ena])led to examine his last two 

 papers published during this year. 



In the one entitled New British Fleas he describes Ceratoj)h.yllu8 

 garei from the water hen ( GaUlnula chloropus) and Ceixitophylhis wal- 

 Jceri from Putorius erininea^ P. nivalis^ Sorex araneiis, Evotomys her- 

 cy7iimis^ and Microtus amphihius. 



The other paper, Some New Nearctic Fleas, is of more direct inter- 

 est to us, in that three new American fleas are described. 



Pulex ursi^ from TJrsus JiorrihiUs, in Alberta, Canada, is ver}- inter- 

 esting, in that it appears to be more closely related to JjohlsU. and liitzii 

 than to an}" other North American species. 



TypldopsyUa grandU, from Tarnlas striatus, in Ontario, is apparently 

 a Ctenophthalmus, and closel}" related to C. gigas^ from which it dif- 

 fers, among other things, in having two unequal genal spines. 



HystrichopsyUa dippiel, from l*atorius longicaudus, in Alberta, 

 Canada, is apparently near the species alread}'^ noted by me as being 

 new. It differs from JL americana in having but six genal spines and 

 thirtj'-six teeth in the pronotal ctenidium. 



1 regret not having been able to examine Mr. Enderlein's late paper, 

 though I have made repeated endeavors to do so. 



Stanford University, California, March 1, 1900. 



