NO. mi. REVISION OF AMERICAN SIPIIONAPTERA— BAKER. 469 



EXPLAXAXroX OF LETTERING OX PLATES. 



/(=liea<l of iVnialc. 

 /i/(=hea<l (if male. 



I = f(.re leg. 

 II=mi(ltlle leg. 

 III=hinil leg. 

 ?H=genital apparatus of male. 

 /=genital apparatus of female. 

 o=inner distal portion of hind coxa. 

 r:=hind roxa. 

 <=hind tarsus. 

 rf=dorsum of female. 

 rff?= dorsum of male. 

 ^Vith but few exceptions all tlie figures were drawn to the same scale, and these 

 exceptions will be apparent. For exact measurements refer to descriptions. 



