118 AMERICAN HYMENOPTERA. 



ous. However, since Cameron's colored plate of laticinchts 

 shows the third and fourth abdominal segments ferruginous 

 this variation may be fixed, and I therefore preserve this 

 species. The difference in color may possibly be due to 

 the specimen having been placed in a wet cyanide jar. 

 Distribution. — Juntas, Bolivia. 



Thyreodon luorio (Fabr.). 

 Plate III, fig. 21. 



Ichneumon morio Fabricius, Spec. Ins., I, p. 436, n. 100 1781. 



Mant. Ins., I, p. 269, n. 118 1787. 



" Gmelin, Linne. Syst. Nat., ed. 13, I, p. 2709, n. 



182 1790. 



" Olivier, Ency. Meth. Ins., VII, p. 196, n. 161 1792. 



" Fabricius, Ent. Syst., II, p. 180, n. 194 1793. 



Ophion morio Fabricius, Suppl. Ent. Syst., p. 237, n. 8 1798. 



Syst. Piez., p. 132, n. 9 1804. 



" Olivier, Ency. Meth. Ins., VIII, p. 511, n. 14 1811. 



" a tricolor Olivier, Idem, p. 511, n. 15 1811. 



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



VIII, p. 272 1822. 



" " Thunberg, Mem. Acad. Sci. St. Petersbourg, 



IX, p. 341 1824. 



Thyreodon morio BruIIe, Hist. Nat. Ins. Hym., IV, p. 152, n. 2, 



9 1846. 



" Norton, Proc. Ent. Soc. Phila., I, p. 359, n. 7. .1863. 



Ophion nwrio Walsh, Amer. Ent., I, p. 7 1868. 



Thyreodon morio Cresson, Trans. Amer. Ent. Soc, IV, p. 170 1872. 



Ophion morio Taschenberg, Zeitschr. f. d. Ges. Nat., 46, p. 425, 



n.2 1875. 



Thyreodon morio Provancher, Nat. Can., XI, p. 119 1879. 



Faun. Ent. Can., Hym., p. 352 1883. 



" Dimmock, Psyche, IV, p. 282 1884. 



" Cresson, Syn. Hym. of N. A., p. 200 1887. 



" " Ashmead, Hym. of Colo., Bull. Colo. Biol. Assn., 



p. 43 1890. 



" Packard, Fifth Rept. U. S. Ent. Comm., p. 489.. 1890 

 " " Harringion, Ann. Rept. Ent. Soc. Ont., p. 67 ..1890. 



" Riley, Ins. Life, III, p. 155, host 1891. 



" Dimmock, Proc. Ent. Soc. Wash., D. C, IV, 



pp. 149-153, host 1898. 



" " Dimmock, Idem, p. 156 {Encyrtus thyreodontis 



Ashm., a parasite) 1898. 



" Bridwell, Trans. Kans. Acad. Sci., XVI, p. 204. .1898. 



