108 HYMENOPTEKA. 



have the apical abdominal segments lengthened out into a short tail, which clasps the 

 ovipositor; they have the petiole very short, and the joints of the club of the antennae 

 are, in most specimens, completely amalgamated. The other (E. petioliventris) has a 

 long petiole, and the abdomen semioval and very strongly compressed, much more so 

 than in any other species I have seen. 



E. aurifrons was found by Mr. Champion near the holes of beetles in a tree. 



1. Eurytoma aurifrons. (Tab. V. figg. 11, $ ; 11a, mandible ; 11 b, abdomen 

 laterally; lie, antenna; 11 d, labium; 11 tf, ovipositor.) 



Kigra ; an tennis pedibusque rufis ; alis hyalinis ; antennis 8-articulatis. 

 Long. 5-7 millim. 



Hab. Guatemala, Pantaleon (Champion). 



The head and thorax are coarsely and closely punctured all over (except on the 

 posterior part of the mesopleurae, which is much less coarsely punctured), and covered 

 with a golden pile, long on the face, pleurae, and metanotum, short on the rest. The 

 scape of the antenna? is a little longer than the two following joints together, the third 

 is a little shorter than the two following, which are subequal, the sixth a little shorter 

 than they, the seventh is shorter, the last double the length of the seventh, conical; 

 the joints become gradually thicker towards the apex. Legs covered with a silvery 

 pubescence ; posterior coxae finely punctured, and covered with short white hair. The 

 metanotum is slightly hollowed and very minutely punctured. 



2. Eurytoma argentata. 



Nigra ; scapo, coxis anterioribus, trochanteribus femoribusque rufis ; tibiis tarsisque albidis ; antennis 9-arti- 



culatis ; alis hyalinis. 

 Long. 5-6 millim. 



Hab. Guatemala, Pantaleon (Champion). 



Differs from E. aurifrons in being smaller; in the antennas being nine-jointed, a 

 little longer, and in not being so much thickened towards the apex, in being more 

 pilose, and the last joint a little longer than the seventh, which is a little longer than 

 the eighth. The pleurae are less pilose, as is also the metathorax ; the four anterior 

 coxae are red, and the tibiae and tarsi white. The male has, as usual, the antennae 

 longer and thinner, and covered with long depressed hairs. The abdomen has a long 

 petiole, and the second segment has a large suture at the base. In both sexes the hair 

 on the thorax is silvery. The middle of the mesopleurae is hollow, very minutely punc- 

 tured, and without hair. 



3. Eurytoma petioliventris. (Tab. V. fig. 12, $ .) 



Nigra ; capite et thorace profunde punctatis, abdomine compresso ; tibiarum apice tarsisque albidis ; alis hyalinis. 

 Long. 3-4 millim. 



