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ILLINOIS BIOLOGICAL MONOGRAPHS 



[110 



lanassa lignicolor, in all except the last stage, is very similar to 

 Schizura unicornis. The striped head, with three mesal white marks 

 in a vertical row, will distinguish it, the head of S. unicornis being 

 unicolorous red. 



Ptilodon americana is called Odontosia camelina by Packard. The 

 larva is very distinct from Odontosia elegans. 



Hyperaeschra shauld apparently be divided into two genera, for 

 the larvae of H. georgica and H. stragula are very different. 



Didugua Druce was erected for the species argentilinea Druce, 

 found in Texas. The coloration is distinctive. 



The following species of Notodontidae were examined: 

 Melalopha — all listed species 



Datana ministra 

 D. californica 

 D. angusii 

 D. drexelii 

 D. major 

 D. palmii 

 D. floridana 

 D. perspicua 

 D. rohusta 

 D. integerrima 

 D. contracta 



Cerura scitiscripta 

 C. occidentalis 



Uarpyia cinerea 

 H. horealis 

 H. scolopendrina 



lanassa lignicolor 



Hyparpax aurora 



H. perophoroides 



Schizura ipomoeae 

 8. concinna 

 S. semirufescens 

 8. unicornis 

 8. apicalis 

 8. hadia 

 8. leptinoides 

 8. errucata Dyar 



Pheosia dimidiata 

 Ptilodon americana 

 Nerice hidentata 

 Hyperaeschra stragula 



H. georgica 

 Symmerista alhifrons 

 Odontosia elegans 

 Ellida caniplaga 

 Dasylophia anguina 

 Didugua argentilinea Druce 

 Fentonia marthesia 

 Heterocampa ohliqua 



H. picta 



H. umbrata 



H. manteo 



H. hiundata 



H. guttivitta 



H. hilineata 

 Litodonta hydromeli 

 Lophodonta ferruginea 



L. angulosa 

 Gluphisia septentrionalis 

 Misogada unicolor 

 ffadata gibhosa 



Family Dioptidae 



Phryganidia californica, the only species of this family found in 

 North America, is described and figured by Kellogg and Jackson in 



