130 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxix. 



in the transference of bubonic plague and lepros^y. The upper edge of 

 the antennal groove has a row of usuall}' many short and thick, 

 but minute, spines or teeth, 



SYNOPSIS OF SPECIES. 



A. Frontal notch present. 



B. Lower edge of gense with a row of several hairs corfidii 



BB. Lower edge of genfe without a row of hairs Intzii 



A A. Frontal notch absent. 



B. Second joint of maxillary pali>i as long as III and IV together Idagesi 



BB. Second article of maxillary palpi equaling IV or shorter. 



C. Third joint of maxillary palpi once and a third the length of II; maxillary 



palpi much shorter than rostrum cowitus 



CC'. Third article of maxillary palpi distinctly shorter than II. 

 D. Spines on outside of hind tibia numerous and arranged in about three longi- 

 tudinal rows; two complete rows of bristles on all the abdominal 



tergites - bohlsi 



DD. Spines on outside of hind tibia in a single row of about eleven members 

 with a few scattering ones beside; second row of bristles on ab- 

 dominal tergites always more or less incomplete. 

 E. Harpe of male lanceolate; the upper claspers with long stout spines. 

 F. Claspers in male with three stout spines and several smaller ones on 

 the outer margin. 

 G. Harpe of male with three bristles near tii); head with two rows of 



bristles before the eye australis 



GG. Harpe of male with a brush of about ten stout bristles below tip; 



head with but one row of bristles before the eye cleophonlis 



FF. Claspers with a submarginal vertical row of about fourteen stout spines 



near outer edge, and others within the margin simonsi 



EE. Harpe of male spatulate, subrectangular; ujiper claspers with only small, 

 weak spines cocyti 



Genus HOPLOPSYLLUS, new genus. 



This is a genus principally of rabbit fleas. Their general structure 

 is quite characteristic. 



SYNOPSIS- OF SPECIES. 



A. Pronotal ctenidium with about nine sj^ines anomalus 



AA. Pronotal ctenidium with fourteen to eighteen spines. 



B. Articles of hind tarsi with some apical bristles longer than their succeeding 

 anticles. 

 C. Vestiture of spines and bristles rather heavy; a spine on hind distal angle of 

 second article of hind tarsi as long as articles III and IV and three- 

 fourths of V together; claspers short and stout; harpe shaggy with 



bail's (iffi.nis 



CC. Vestiture comparatively light; a spine on hind distal angle of second article 

 of hind tarsi as long as articles III and IV, and scarcely one-fourth of 



V together; claspers long and slender; harpes with few hairs lynx 



BB. Articles of hind tarsi with all the bristles shorter than their succeeding 

 articles glackdis 



