NO. 1417. REVISION OF AMERICAN SIPHONAPTERA— BAKER. 137 



Genus H YSTRICHOPSYLLA Taschenberg. 



1898. IListrirhopsi/lla Bezzi, Rev. Ital. So(\ Nat. y Boll. Nat., XIII, p. 187. 



SYNOPSIS OF AMERICAN SPECIES. 



A. Pronotal ctenidinin of about fifty ppines; j^enal rtenidiiiiii of fourteen spines. 



anirrirana 

 AA. Pronotal ctenidiuin of thirty-six S])ines; <fenal ctenidiuni of six spines dipplei 



Family CERATOPSYLLID.E, new family. 



1904. Ti/phlops)//! i ii;i irdTtTiR\BO»CHi, Archiv. de Parasit. , VIII, \>. 242, 275. 

 This ot'oup is as elig'it)le to family rank as any other in th(> order. 



Genus CER ATOPSYLLUS Kolenati. 



1908. Ceratopsyllus Kohaut, Magj'ar. Itolhai, p. 59. 



1904. CeratopsyUna TiRAnoficni, Archiv. de Parasit., VIII, p. 276. 



SYNOPSIS OF AMERICAN SPECIES. 



A. Cephalic processes long, curved, and acuminate; metatarsal article I as long as 

 til)ia and with fifteen pairs of spines on the margin; pronotal ctenid- 



iuin of twenty spines (JtsllnetKs 



AA. Cephalic jirocesses short, blunt, and nearly straight. 



B. Metanotum with bristles and hairs only; none of these developed into ctenidial 

 spines; mesonotum much longer than the metanotum; pronotal 

 ctenidium of twenty-two sj lines; metatarsal article I with the lateral 



spines 7-;i palpo.vifi 



BB. Metanotum with the sul)apical row of bristles developed into a ctenidium. 

 C. A ctenidium on segment I of abdomen only; segments II-IV with a single 



row of bristles each; pronotal ctenidium of 27-29 spines troljf'solnii 



CC. Ctenidia on segments I to IV of abdomen. 



D. Pronotal ctenidium of twenty-four spines fosteri 



DD. Pronotal ctenidium of thirty -six spines insigniif 



CCC'. Ctenidia on segments I-VII of abdomen; metatarsal article I with spines 

 7-8, and this segiment as long as segments II, III, and IV together; 

 mesonotum nearly twice the length of metanotum on the dorsal 

 line croshyl, new species 



ADDITIONS AND CORRECTIONS TO THE LIST OF SIPHONAPTERA 

 OF THE WORLD GIVEN IN THE REVISION OF AMERICAN SIPHON- 

 APTERA. 



Family RHYNCHOPRIONID.F: Baker. 



Genus RHYNCHOPRION Oken. 



RHYNCHOPRION C^ECATA (Enderlein) Baker. 



1901. Enderleix, Zool. Jahrb., p. 549 {Sarcopsy/lK cwcata). 



1901. ExDERi.EiN, Dentsches Tief-see Exped., 1S98-99, III, p. 268 (Sitrmpsylla 



rircata). 

 1904. TiRABoscHi, Archiv. de Parasit., VIII, p. 306 {Sarcopsylla areata). 



Host. — 3fus rati lus. 

 Habitat. — Brazil. 



