NO. 1361. REVISION OF AMERICAN SIPIIONAPTERA— BAKER. 377 



Fiimily PrLK^ID.E Stephens. 



1829. Pulicidx Stephens, Syst. Cat. liritiah In.sects. 

 1880. PuUcidiv Taschenbkrc, Die Fli)he, p. 02. 

 1895. Pulicidx Baker, Canad. Ent., XXVII, p. 20. 



As used In' Stephens for the I^ritish species, this is its first applica- 

 tion to that group of whicli the genus Pulex is the type genus. 



TAr,LK OF GKXERA. 



a. IMaxilla' hinji triangular, acute at apex. 

 b. Ab(U)Miiual tergites never with ctenidia. 

 c. Posterior til)ial 8j)ines in pairs and not in a very dose-set row. 



d. Last tarsal joint on all the tarsi with a marginal row of four stout sjiines on 

 each siile beneath; eyes always large and well developed; hin<l coxal ej)i- 

 l)hysis narrowing distally into the <'oxa, forming a poorly defined notch 

 or none; female with ])nt one anteiiygidiai bridle on eacli side. 



e. Head without ctenidia Pulex (p. 378). 



ec. Head and prothorax»with cteniilia Clenocephalus (p. .384. ) 



dd. Last tarsal joint with five pairs of stout spine.s l)eneath, at lea.st on anterior 

 tarsi; sometimes only four on nnddle or hind tarsi and then eyes 

 wanting. 

 e. ]\Iaxillary palpi rarely extending to half or three-fourths of anterior 

 coxcP; prothorax with a ctcnidium; himl coxal epiphysis forming dis- 

 tally with the coxa a shallow notch; female with three antepygidial 

 l)ristles on each side. 

 /. Head without ctenidia; eyes usually well developed. 



Cerutopln/lhis (p. .38.5). 

 ff. Head witli ctenidia; eyes usually very rudimentary. 



Clf)u>j>Itlliahuii.'i (p. 420). 



ee. Maxillary j)alpi exceeding anteri(jr coxa'; eyes totally wanting; head 



and prothorax without ctenidia; hind coxal epiphysis forming di.^tally 



with the coxa a deep notch, subtended outwardly by a jiroduced acute 



lind); female with on(> antepygidial bristle on each side. 



Anoniiopni/llus (p. 425). 



cc. Posterior tibial spines mostly single and in a close-set row; face sloping down 



and back from the forehead, thus the whole head more or less c<mical; 



eyes wanting. 



d. Head of female without a cap-like jtatella in front, but with or without 



nearly perpendicular ctenidia on gena"; the normal female with three 



or four antepygidial bristles on each side (teunpsi/llus (p. 426). 



dd. Head of female with cap-like patella armed with a ctenidium on its 

 posterior border; gena' with subperpendicular ctenidia; man<Hbles 

 extremely slender; femak' with but one antepygidial bristle on each 



side Slrj>lut)wcircu.'< ( p. 4.30. ) 



bh. Abdominal tergites with one or more ctenidia; posterior til)ial spines in 

 numerous, short, close-set transverse rows on jiosterior border, with about 

 four spines in each row; female with four antepygidial l)ristles on each 



side Ili/slrirhop.'ujUn ( ji. 432). 



aa. Maxilla" clavate or sub(|uadraugular; fa<'e strongly sloping forward and recurved 

 just above the mouth, wlu-re there are two tooth-like plates on I'ach side; 

 eyes ab.«ent; pronotum and usually abdomen with ctenidia; confined to 

 bats Ctralnjisi/llu.i (p. 4.32 ). 



