3,'^ APPENDIX. 



riceous, with ochrcous tibiae and tips of the thighs ; posle- 

 inor pair black, sericeous, tibiae ochreous at base. 



Length one-fourth to nearly three-tenths of an inch. 



Very like the sulcutus, Juiine, but is much larger; it 

 differs from Ichneumon oculator, Fabr. by being imma- 

 culate, and from Cryptus irrorator^ Fabr. by the oval 

 form of its abdomen. 



2. S. basilaris. Black ; base of the antenna and feet pale 

 yellowish. 



Inhabits Pennsylvania. 



Head punctured ; antennae, first and second joints pale 

 yellowish ; mandibles yellowish ; palpi white ; thorax 

 punctured ; scutel, metathorax, and terguni at base lon- 

 gitudinally wrinkled ; wings hyaline, pale yellowish at 

 base ; nervures fuscous ; feet pale yellowish, tips of the 

 tarsi dusky. 



Length nearly one-fifth of an inch. 



This species is in the collection of Mr. William W. 

 Wood. It is much smaller than the preceding species and 

 readily distinguished by the colour of the basal joints of 

 the antennae and of the feet 



BRACON, Jur. 



1. B. tibiator. Black; wings fuscous at tip. 



Inhabits Pennsylvania. 



9 Wings hyaline, nervures robust, fuscous; tip including 

 the extremity of the second submarginal cellule, fuscous ; 

 feet, anterior pair of tibiae and tarsi yellowish-white ; in- 

 termediate tarsi whitish ; posterior pairs of tibiae white at 

 base. 



Length of the body one-fifth of an inch. 



