HYMENOPTEROUS PARASTIES, 275 



Synopeas (?) cornicola Ashm. ('93, p. 288). 



With Dolichotrypes and Gastrotrypes, Mr. Fiske took several 

 specimens which apparently belong to this species, so far as Ash- 

 mead's original description is concerned. His types of S. cornicola 

 were reared from an Itonidid gall on Cornus yaniculata, however, 

 which suggests that the present form is probably distinct. These 

 specimens are very much like the species from British Guiana (S. 

 meridionalis) but considerably larger and otherwise specifically dis- 

 tinct. 



Polygnotus simplex sp. nov. 



9 . Length 0.8-0.9 mm. Black; antennal scape honey-yellow, 

 darkened toward apex; legs honey-yellow, the coxae piceous and the 

 femora, especially the hind ones inf uscated ; hind tibiae and sometimes 

 the other tibiae also, darkened at tips. Head very much flattened, 

 seen from above nearly three times as broad as long;' lateral ocelli 

 nearly as close to the median one as to the eye-margin; head behind 

 the ocelli transversely aciculate; front smooth and polished; malar 

 space long, fully half the width of the eye, faintly shagreened as is also 

 the head behind the eyes. Antennae 10-jointed; scape stout, not much 

 thickened apically, half the length of the remaining joints together; 

 pedicel elongate, nearly twice as long as thick; first flagellar joint 

 small, pale colored; half as long and half as thick as the pedicel; 

 second and third larger, nearly equal, each a little longer than thick; 

 remaining five forming a rather slender club of which the basal joint 

 is smaller and the last longer than the intermediate more or less quad- 

 rate ones. Mesonotum convex, smooth, without furrows, thinly 

 clothed with appressed pale hairs. Scutellum very highly convex, 

 separated at base by a narrow groove, with a large oval impression at 

 each side; its surface finely and shallowly punctate-reticulate. Abdo- 

 men elongate ovate, widest near the apex of the second segment. 

 First segment quadrate, as long as the scutellum, coarsely longi- 

 tudinally fluted; second considerably longer than wide, twice as long 

 as the following segments together, with several short grooves medially 

 at base and a large cuneate basal impression near each side at base; 

 third and fourth equal, each very short; fifth small, triangular, but 

 longer than the fourth; terminal segments not exserted, ovipositor 

 very short. Pro- and mesopleurae smooth and shining; metapleurae 

 clothed with rather sparse backwardly directed pale hairs. Lateral 



