ICHNEUMON-FLIES OF AMERICA! 1. METOPIENAE 267 



general coloration of Exochus atriceps atriceps and of E. russeus. It 

 does not agree with any of the specimens at hand. Possibly future 

 collectors will find the species again. The original description is 

 reproduced below. 



"cf . — Differs from the above [Exochus atriceps atriceps] only as follows: 1. The 

 head is white, except a black spot just enclosing the ocelli and a large lunate black 

 spot on the occiput, medially confluent with the other one by a short space. Face, 

 except the orbits, tinged with rufous. 2. The 1st. joint of the flagellum is only 

 twice as long as wide, the 2nd. only \i longer than wide, and the following joints 

 square. 3. The thorax is glabrous and polished, and the carinae on the meta- 

 thorax are all distinct as in [Exochus] albifrons. The white markings are rufescent 

 and less distinct, and the only black markings are a short line inside origin of the 

 front wing, an indistinct vitta on the disc of the lateral lobe of the mesonotum, 

 and a large spot at the tip of its middle lobe. 4. The first joint of the abdomen is 

 immaculate, l /> longer than wide, and twice as wide behind as before, its 2 carinae 

 reaching half way to the tip. An obtrigonate, dorsal spot at the tip of joint 5 

 and the whole of 6-8, black. 5. The legs are all dull luteous, with an abbreviated, 

 exterior vitta on each femur, and an unabbreviated one on each tibia. Length cf 

 .18 inch. Front wing cf .15 inch. 



"One cf; 9 unknown to me. Distinct from all Mr. Cresson's species by its 

 rufous abdomen, etc." 



