12 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiii. 



2. Head, viewed from in front, broader than long; occiput strongly concave, the 



temples broad, full Tribe lY. Heresiarchini. 



3. Metanotum withoitf the basal or first median area, the areola fully two and a half 



times as long as wide and acutely pointed at base; petiolar area not 

 longer than wide; metathoracic spiracles large, broadly oval. 



Tribe Y. Alomyixi. 

 Metanotum with the basal or first median area distinct, the areola never twice as 

 long as wide and not iwinted at base, either truncate or rounded, 

 or, at the most, obtusely triangular at base; petiolar area much 

 longer than wide; metathoracic spiracles rounded or circular, never 

 large Tribe YI. Ph^eogexini. 



Tribe I. JOPPINI. 



1868. TrogouLr, Family 27, Forster, Yerh. d. naturh. Yer. pr. Rheinl., XXY, 



pp. 144 and 188. 

 1894. Trogini, Tribe I, Ashmead, Proc. Ent. Soc. "Wash., Ill, p. 278. 

 1898. Joppina', Subfamily, Kriechbaumer, Ent. Nachr., XXI Y, p. 2. 

 1900. Jopjyini, Tribe I, Ashmead, Smith's Insects of New Jersey, p. 563. 



The typical forms falling in this tribe are easily separated by anten- 

 nal, scutellar, and abdominal characteristics from those falling in the 

 tribe Iclinemnonini ; but there are seA'eral genera which can scarcely 

 be distinguished from genuine ichneumonini, and these must be exam- 

 ined carefully for the metathoracic characters made use of in my table 

 of triljes. 



Forster l)ased the group upon the genus Tragus Gravenhorst and 

 gave for the family diagnosis a single character — the shape of the 

 scutellum. Kriechbaumer has done no l>etter, although he calls the 

 group a subfamily — the Joppince^ taking the name from the lirst- 

 described genus, Jojyj^a Fabricius. He has, howeyer. given an ex- 

 cellent table, and brought together a number of genera closely related. 

 Kriechbaumer does not include in his table Joppa Fabricius. but 

 for the species usually considered as such he has proposed the name 

 Ificrojojijxi. He had. of course, the right to segregate the old genus 

 Joppa, but no right to reject it entirely and I have here restored the 

 name Joppa for his Microjoppxi. His genus Trtcyploix. too, seems 

 to be identical with Tragus Grayenhorst. 



The following table will aid in separating the genera l)elonging to 

 this tribe: 



TABLE OF genera. 



Antenn;^ in female at or beyond the middle widened, compressed; in male beneatli 

 serrate; abdomen with more or less distinct angular emargina- 

 tions, the segments, at least in part, striate or aciculate 2 



Only one or the other characteristics present 6 



2. Wings with at least the tips l)rown, often also with brown macuUii or bands 



toward the base or before the middle, seldom wholly or in great 



l)art brown 3 



Wings hyalin(% the widening of the antenuie often insignificant, scarcely 

 J lerceptible 4 



3. Lal)ruiu hidden under the clypeus; head large, with the cheeks more or less 



swollen; species rather small, mostly yellow, or reddish yel- 



