Fig. 1. 
CaN aa bh w 
PLATE II. 
Navicuna Pr&texta, Ehrenberg. 
NavicuLa NEBULOSA, Gregory. 
Navicuta Hennepyit, Smith. 
Navicuxa rorcrpata, Greville. 
NavIcuLa SPECTABILIS, Gregory. 
NavicuLa aprupta, Gregory. 
Navicuta tyra, Ehrenberg. 
Navicura ciavata, Gregory. 
Navicuta Rostrata, Ehrenberg. 
