16 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiii. 



Head large, swollen, the occiput deeply concave; scutellum very broad, 

 subquadrate, more or less elevated, and margined at the sides, 

 unituberculate, or with a small spine above; areolet rather 

 small, pentagonal, the median and submedian cells of an equal 

 length; gastrocoeli very large transverse. 



(31) CEd i cephalus Cresson. 



(Type, (Edicephahis longicornis Cresson.) 



Head transverse, or subquadrate; scutellum cushion-shaped, convex, and 



margined ; areolet trapezoidal ; metathorax exareolated. ( Male ) . 



(27) Hoplojoppa Kriechbaumer. 

 (Type, Hojilojoppa parvispina Kriechbaumer.) 



Tribe II. ICHNEUMONINI. 



1868. Ichneumonoida: , Family 29, Forster, Verb. d. naturh. Ver. pr. Rheinl., 



XXV, pp. 144 and 149. 

 1894. Ichneuvionhu, Tribe II, Ashmead, Proc. Ent. Soc, Wash., Ill, p. 278. 

 1900. Ichneumonini, Tribe II, Ashmead, Smith's Insects of New Jersey, p. 564. 



As previousl}^ .stated, this tribe is scarcely separable from some 

 forms belonging- to the Joppln')., and it recj[uires considerable care and 

 the closest scrutin}" for the detection of the metathoracic differences, 

 used in my table of tribes, before one can be sure of the position of 

 certain forms. It is clearly connected with the Joppini by the genus 

 Amhlytdes and allied genera through P rot ichneumon., Codlchneumon., 

 and Autonialus. 



The tribe is, however, easily separated from the others: The simple, 

 non-pectinate claws separate it from the Listrodromin!,, the bidentate 

 mandibles from the Heresiarehini., while the large, elongate or linear 

 spiracles distinguish it from the Alomyini and the P/iwogenini. 



The genera may be distinguished by the use of the following table: 



TABLE OF GENERA. 



Basal third of petiole flattened, wider than thick dorso-ventrally 8 



Basal third of petiole not flattened, or so little that it is not wider than thick dorso- 

 ventrally. 

 Alxlonien in female with its tip blunt, the last ventral segment covering the base 



of the borer {Amhhjpygi ) 5 



Abdomen in female with its tip pointed, not blunt, the last ventral segment not 



covering the base of the borer [Oxypygi) 2 



2. Scutellum not short, convexly elevated and declivous posteriorly, not margined 

 laterally; metathorax with the upper hind angles usually den- 

 tate, the areola wider than long. 



(32) Hoplismenus Gravenhorst. 

 (Type, Hoplismenus ^jcniietosus Gravenhorst. ) 

 Scutellum short, subconvex, rounded posteriorly and margined laterally, meta- 

 thorax unarmed, the areola narrow, curved and much broader 



than long (33) CaUimus Tosquinet. 



(Type, CaUimus adornatus Tosquinet.) 

 Scutellum usually flat, never much elevated nor highly declivous posteriorly. 

 Clypeus medially on the anterior margin not emarginate or sinuate, either 

 truncate or slightly rounded 3 



