CHARLES W. HOOKER. 161 



Opliion diniidiator Fabr, 



Ophion dimidiaior Fabricius, Syst. Piez., p. 136, n. 31 1804, 



Olivier, Encycl. Meth., Ins., VIII, p. 514, n. 38..1811. 

 Ichneumon detnidator Thunberg, Bull. Acad. Sci. St. Petersbourg, 



VIII, p. 262 1822. 



" " Thunberg, Mem. Acad. Sci. St. Peters- 

 bourg, IX, p. 314 1824. 



Ophion dimidiator Dalla Torre, Cat. Hym., Ill, p. 189, Amer. 



Mer 1901. 



" " Szepligeti, Gen. Ins., Hym., 34nie Fasc, p. 31, 



n. 97 1905. 



Flavous ; antennce black ; abdomen fuscous ; base flavous. 



Habitat. — Amer. Merid. 



Structure and size of O. luteus ; head flavous ; vertex black ; antennae 

 black ; thorax flavous, immaculate. Abdomen petiolate, falcate, com- 

 pressed, the first and second segments ferruginous, the rest blackish. 

 Feet flavous. 



This description is too incomplete to make identification 



possible. 



Ophion emarginatus Say. 

 Ophion emarginatus Say, Bost. Journ. Nat. Hist., I, 3, p. 245, 



n. 8; Comp. Wrs., II, p. 699 (1859) 1836. 



Anom,alon emarginatutn Dalla Torre, Cat. Hym., Ill, p. 164 1901. 



" " Szepligeti, Gen. Ins., Hym., 34"'eFasc., 



p. 13, n. 82 1905. 



This species has for some time been recognized as belong- 

 ing to the Genus Anomalon. 



Opliion exteniiator Fabr. 



Ophion extenuator ¥a.hvic\\x&, Syst. Piez., p. 137, n. 35 1804. 



Olivier, Encycl. Meth., Ins., VIII, p. 514, n. 44.. 1811. 

 Ichneumon extenuator Thunberg, Bull. Acad. Sci. St. Peters- 

 bourg, VIII, p. 265 1822. 



" " Thunberg, Mem. Acad. Sci. St. Peters- 

 bourg, IX, p. 321 1824. 



Ophion extenuator Dalla Torre, Cat. Hym., Ill, p. 190, Amer. 



Mer 1901. 



" " Szepligeti, Gen. Ins., Hym., 34nie Fasc, p. 



31, n. 98 1905. 



Black ; abdomen falcate, rufous ; dorsum black, the anterior feet fer- 

 ruginous. 



Habitat. — Amer. Merid. 



TRANS. AM. ENT. SOC, XXXVIII. (21) 



