24 
Bassus euurce Aslim. has been reared from Pontania resinicola, and 
Pinypla euurce Ashm. from Pontania pyrif or mis. These last arc undoubt- 
edly parasitic upon the larva' of the gall makers. 
TABLE OF SPECIES. 
Fern a hs. 
Sheath broad at base, sharply acuminate at tip. and emarginate beneath I 
Sheath as above, except that the tip is obtusely rounded II 
Sheath broad and rounded at tip, scarcely tapering Ill 
Sheath narrow, elongate, regularly tapering to somewhat pointed tip IV 
I. Color in general black. 
Head, thorax, abdomen, and femora black : tegul.e and mouth parts pale. 
1. crcssoni n sp. 
Same, except that angles of pronotum are yellow and the femora are pale 
laterally 2. parra Cr 
Same, except that pronotum and legs are whitish and the orbits aro broadly 
yellow except on narrow inner margin 3. nigrita n. sp. 
Same as last, except that orbits are entirely yellow; antenna* yellow 
beneath and sheath but slightly emarginate 4. pallioomU Nort. 
Color in general lateous. 
Claws very minutely cleft at tip. 
I fiit i al lobe of metanotum black ; outer veins of posterior discals not 
interstitial 5. agilis Cr. 
( Vntral lobe pale ; outer veins interstitial 6. mellina ( !r. 
( la k s coarsely notched . - .' 7. nevadeneia ( !r. 
II. Color black 8. exoavata n. sp. 
Color in general resinous. 
Frontal cresl well developed. 
Stigma broad, rounded on lower margin. 
Crest bulbous ; pectus pale 9. resinioola n. sp. 
Crest narrow; pectus black 10. pectoralia n. sp. 
Stigma narrow, acuminate 11. acuminata n. sp. 
Frontal crest obsolete 12. robitsta n. sp. 
III. ('(dor in general black. 
Orbits black; stigma narrow elongate 13. hincaidi n sp. 
< )rbits broadly yellow ; stigma brown 11. pisum Walsh. 
Orbits posteriorly yellow; stigma yellow 15. bruneri n. sp. 
( lolor in genera] resinous. 
Mesonotum black, except scutellum; sheath broad, paddle shaped. 
1(1. pacifica n. sp. 
Mesonotum mostly pale; sheath somewhat blade shaped. 
17. pomum Walsh. 
IV. Clypeus nearly truncate, or very broadly and shallowly emarginate. 
Pronotum and venter of abdomen black. 
Tegulse black «18. aira n. sp. 
Teguhv pale 19. hyalina Nort. 
Pronotum and venter of abdomen pale 20. truncate u. sp. 
Clypeus distinctly and more narrowly emarginate. 
Dorsum of thorax and abdomen black. 
< >rbits black, or rarely slightly reddish brown. 
Venter of abdomen black 21. atriventria n. sp. 
Venter of abdomen pale 22. calif ornica n. sp. 
Orbits broadly yellow. 
Stigma and costa brown 23. gracilis n. sp. 
Stigma and costa hyaline 24. stigmatalis n. sp. 
