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SJND FLEAS FROM RHODE ISLAND— JUDD. 



VOL XVIII. 



males of this species; but the}- differ from the females of -B. Ion(jiconiis 

 ill points which I think are not easily explained as due to diflerences 

 of sex. 



Fig. 9. 

 BYBLIS AGASSIZI, Male. 



By studying the sexual differences exhibited by the type species of 

 the genus, J>. (jaimanlU., we shall be better prepared to state whether 



Fig. 10. 



BYBLIS AGASSIZI, Male. 



(o) First .-ind (ft) s«i.r.,l lu.Hxillit of left side, ventro-l.iler.il aspect ; (c) (triuder iu prulile ; (i() right niaiidible, median face of eutting 



edsre ; (< ) palpus, median faie ; (.;•) maxilliped, ventral view. 



or not a given difference is i)robably to be included under the category 

 of sexual peculiarities. 



