NO. 2284. NEW AORTH AMERICAN ICHNEUMON-FLIES— CVSHMAN. 529 



and tarsus fuscous; wings hyaline; abdomen piceous, the tergites 

 narrowly margined with whitish; the second with conspicuous pale 

 gastrocoeli distant from the base. 



Type-locality. — Lawrence, Kansas. 



Type.— Cat. No. 21640, U.S.N.M. One female taken July 10, 1896, 

 by Hugo Kahl. 



Genus SPILOCRYPTUS Thomson. 

 SPILOCRYPTUS EXANNULATUS, new species. 



Female. — Length, 5.5 mm. ; antennae, 4.5 mm. ; ovipositx)r, 1.5 mm. 



Differs from polychrosidis Cushman^ principally as follows: 



Head granularly subopaque, more strongly so on face; vertex con- 

 vex behind the ocelli, occipital carina not subangulate medially; 

 antennae longer and more slender, first joint of flagellum at least 

 tive times as long as thick; propodeal spiracle small, broadly oval; 

 areolet large, the intercubiti nearly parallel. Abdomen with second 

 and third tergites basally shagreened, with sparse, weak punctures, 

 otherwise polished; first tergite stouter, nearly three times as wide 

 at apex as at base ; ovipositor about half as long as abdomen. 



Head with scape and pedicel, thorax, and abdomen beyond third 

 tergite black, seventh tergite with a very small white spot ; first three 

 tergites bright rufo-tastaceous; flagellum and palpi fuscous, the 

 former not annulated with white; mandibiles and tegulae piceous; 

 legs, except apices of hind femora and tibiae and apical joints of all 

 tarsi, which are more or less blackish, bright rufo-testaceous; wing 

 slightly brownish. 



Male. — Length, 6 mm. ; antennae, 6 mm. Aside from its usual more 

 slender form and longer antennae differs from female principally in 

 having the testaceous of abdomen and legs less brilliant, the antennae 

 nearly black, the hind tarsi blackish nearly to the base, and in lack- 

 ing the white abdominal spot. 



Host. — Polychrods viteana Clemons. 



Type-locality. — North East, Pennsylvania. 



Type.— Cat. No. 21628, U.S.N.M. 



Nine females and 14 males reared by the writer from pupae of the 

 grape-berry moth under Quaintance No. 14440. In size these vary 

 from the size of the types down to 4 mm., the smallest specimen being 

 a female (paratype h). This specimen is also colored more like the 

 male, Paratypes e-h (females) lack the white abdominal spot. 



Below are described a new genus and a number of new species 

 discovered in the United States National Museum. In order to prop- 

 erly define these it seemed advisable to discuss rather fully the genera 

 to which they are assigned, and, since there has been considerable 



1 Proc. U. S. Nat. Mus., vol. 53, 1917, p. 461. 

 G2055— 20— Proc.N.M.vol.55 35 



