HYMENOPTEROUS PARASITES. 271 



Gastrotrypes spatulatus sp. nov. 



9 . Length 0.8-1.20 mm., exclusive of the very slender hyaline 

 apical portion of the abdomen which may be entirely withdrawn or 

 extruded to a length of slightly more than that of the body; true ovi- 

 positor very short, never extruded for more than a very short distance 

 beyond the hyaline tube which comprises the sixth and seventh seg- 

 ments, although in many specimens it appears to consist of only a 

 single segment, the sixth. Black; antennal scape honey -yellow, 

 except more or less at apex; legs honey -yellow, hind coxre sometimes 

 darker; hind femora and tibicie infuscated apically, also sometimes the 

 femora and tibite of the other legs. Head, seen from above oval, 

 slightly, but distinctly more than twice as broad as thick. Ocelli large, 

 the lateral ones removed by somewhat less than their own diameter 

 from the eye-margin, surface of head shining, the vertex and sides of 

 the front shagreened, but the front almost entirely smooth medially; 

 head behind and cheeks, smooth; malar space rather long, more than 

 half the width of the eye, smooth and polished, without furrow. 

 Antennae nine-jointed, not taking into account a minute hyaline con- 

 nection between the pedicel and first flagellar joint; scape about half 

 as long as the remaining joints together; pedicel short, one-half longer 

 than wide; first flagellar joint slightly longer than the second, nearly 

 twice as long as thick; third very small, half as long and half as thick 

 as the second; club 4-jointed, rather stout, the joints as long as broad, 

 except the last which is more elongate. Mesonotum shining, sparsely 

 clothed with pale appressed hairs laterally; without parapsidal fur- 

 rows; much narrowed anteriorly, with the pleurre largely visible from 

 above. Scutellum not separated by a basal groove, but with a large 

 pubescent fovea at each side; strongly convex, the posterior portion 

 obliquely sloping, almost truncate; entire surface densely hairy and 

 apparently closely punctate beneath the hairs. First four abdominal 

 segments smooth, forming an oval mass as long as the thorax; first 

 segment short, campanulate, with a deep fovea at each side, densely 

 pubescent, except above; medially with a median groove which 

 receives a corresponding ridge on the propodeum when the abdomen 

 is bent upwards; second segment as long as wide, broadest behind, 

 one half longer than the third and fourth together; third and fourth 

 sharply narrowed, of equal length; fifth segment longitudinally 

 aciculate, slightly longer than the fourth, only one-fifth as wide as the 

 second segment, its sides parallel, except on the narrowed apical half; 

 from its apex projects the hyaline sixth segment which is scarcely 



