18G3.] 359 



tinct or entirely wautiug. The colors of the body vary, being sonietimea 

 pitchy brown with the thoracic lines indistinct, while sometimes they are 

 almost white and much more distinct than in any specimens of hilineatus, 

 and the body varied with yellow spots. The costal nerves are very black, 

 with no yellow except within the stigma. This is not so common as hi- 

 lineatus. 



••'*). Inner radial wing nerve incrassate toward the stigma and recurved. 

 e. OpMon macrurum. 



Jchneumon macrurum Linn. Mant. 540. 



Ophion macrurum Drury, Ex. Ent. I, 92, pi. 43, 5. Emmons, N. H. N. Y. Ag. V. 



p. 196, pi. 27, fig. 5. 

 Ophion cecropia Harris, Catalogue. 

 Ophion rugosus Brulle, Hym. IV, 138. 

 N. England, N. Y., Pa., 111., N. Orleans. 



Parasite on Attacus Cecropia and Polyjiliemxis. The largest specimens 

 are about 1.40 inch in length and 2.24 inches in br. wings. They vary 

 much in size and somewhat in form of large submarginal cell, in the upper 

 part of which all have a large very clear space. 



THYREODON Brulle. 



Clypeus enlarged and advanced in the middle in form of a tooth; mandibles wide; 

 second article of maxillary palpi enlarged; metathorax rounded at summit. 



7. Thyreodon morio. 



Ichneumon morio Fab. Ent. Syst. II, 180, 194(1775). Spec. Ins. I, 436 (1781). Mant. 



•Ins. I, 269 (17S7). Ent. Syst. Sup. 237. 8 (1792). Oliv. Encyc. 



Meth. Ins. 7, 196, 161 (1792). 

 Ophion morio Fab. Syst. Piez. 132, 9 (1804). 

 Ophion atricolor Oliv. Encyc. Meth. Ins. 8, 511 (1811). 

 Thyreodon morio Brulle, Hym. IV, 152(1846). 



N. Eng., N. Y., Pa., Ill, Car. (St. Farg.), Am. Merid. (Fab.). 



The apical joints of the antennas are black. 



Fabricius in his last notice of this insect (1804) calls it an Ophion. 

 Olivier in 1811 seems to overlook his former description of it under the 

 name of Icli. morio and redescribes it as Ophion atricolor^ and Brulle in 

 his turn has disregarded Olivier's description and refers back to Fabricius. 



EXOCHILUM Wesmsel. 



8. Exochilum nigrovarium. 



Anomalon nigrovarium Brulle, Hym. IV, 172 9 • 



Two specimens. Conn. N. Am. (St. Farg.) 



9. Exochilum fuscipennis. n. sp. 9 . Length 1.10 in. Br. wings 1.44 in. 

 Black, with rufous marks, wings smoky yellow. Antennse reddish, several of 



