98 Psyche [June 
Trydymus eneicornis sp. nov. 
Female: Half the size of robiniecola Ashmead and differing 
farther in having the antennze wholly metallic green and also the 
legs except knees, tips of tibiz and tarsi; otherwise the same but 
the spiracle of the propodeum is smaller and about its own diameter 
from the cephalic margin. The clypeus at apex is distinctly 
convexly projected. Valves of ovipositor distinctly shortly ex- 
truded. First ring-joint extremely short. Pedicel longer than the 
subquadrate funicle 1. Otherwise as in the named species. 
Described from one female taken from a plum tree in New York 
State, May 25, 1888. 
Type: Catalogue No. 20425, U. S. National Museum, the 
female on a tag and a slide. 
Trydymus gargantua sp. nov. 
Female: Length, 2.30 mm. Like enetcornis but very much 
larger, a third or more larger than americensis or robiniecola and 
differing farther as follows: the scape is yellow at extreme base, 
the pedicel at-apex and beneath, the funicle and club all so except 
above; the legs are golden yellow except the coxee and the proximal 
two thirds (less on cephalic femur) of the femur which are metallic; 
the ovipositor is not at all extruded and the propodeal spiracle is 
large, oval and at cephalic margin. Pedicel subequal to funicle 1. 
The same otherwise. 
The male is similar but the funicle is 6-jointed, the club 2- 
jointed, funicle 1 shorter. 
Described from a pair from Ithaca, N. Y. (Cornell University). 
Types: Catalogue No. 20426, U. 5. National Museum, the pair 
on tags, male and female antenna and caudal legs on a slide. 
The clypeal projection is somewhat more prominent in this 
species. 
Trydymus poloni sp. nov. 
Female: Like gargantua but the ovipositor is a little extruded, 
the legs are golden yellow except most of the middle and all of the 
caudal coxze, the antennz so except the scape above at distal two 
thirds, the pedicel above and the funicle joints too, more or less; 
the projection of the clypeus is not convex but subtruncate; the 
fovee along the cephalic margin of the propodeum are minute and 
