166 Illinois State Laboi'atory of Natural History. 



PupcB. 

 Seventh abdominal segment freely movable in male^ 

 appendages sub-external, separated from internal 

 cavity by well-developed partitions, and breaking 

 away from it at time of emergence. 

 Developed spiracles present on segments 2-4 of 

 abdomen ; its apex merely pointed. 

 Spiracles of abdominal segments 2-4 about equal 

 in diameter; ventral sheath surpassing sev- 

 enth segment. [Fig. 6.] Paraponyx. 

 Spiracles of second abdominal segment much 

 smaller than the next two pairs. 

 Ventral sheath long, nearly as long as abdo» 



men. 



? Hydrocampa icciusalis, f Cataclysta. 



Ventral sheath short, not surpassing seventh 



abdominal segment. (Hydrocampa, Jide 



Guenee. ) Hydrocampa obliteralis. 



Developed spiracles present on segments 2-7 of 



abdomen, its §,pex flattened, with mass of recurved 



chitinous filaments. Pyrausta nelumhialis. 



Fifth and sixth abdominal segments freely movable^ 



seventh and remaining segments united in both 



sexes; appendages sub-internal, with only a slight 



separation from internal cavity, and not breaking 



away from it at time of emergence. 



Nonagria, Arzam-a. 



No Arzama or Nonagria were collected at Havana 

 during the season, and further treatment of the Noctu- 

 idsB is omitted at present. 



Family PYRALID.E. 



Nymph^ella. 



The wings of the moths are rather long and narrow, 

 obtuse at apex, the primaries without transverse lines, 

 and more or less spotted or tessellated, the hind wings 



