INSECTA. 
465 
1. c. p. 137, I. saucius, ibid., from Pennsylvania; I. afeVj from Illinois ; I. ater^ 
ibid., from New York and Illinois; I. cincticornis, 1. c. p. 139, from Pennsyl- 
vania ; I. hlokei, ibid., I. montanus, 1. c. p. 141, 1. pedalis, ibid., and I. semi- 
IcBvis, 1. c. p. 142, from the Colorado; I. flavicornis, 1. c. p.‘ 140, from New 
York ; and I. ormenus, 1. c. p. 141, from Pennsylvania. 
§ 2. J3lack species : scutellum white : — 
I. vittifi-ons, 1. c. p. 143, from Delaware ; I. pvUatus, 1. c. p. 146, from Dela- 
ware and Illinois ; 1 audax, 1. c. p. 143, 1, caliginnsm^ 1. c. p. 144, I. tenehrosttSj 
1. c. p. 145, I. cordatus, 1. c. p. 146, and I. ohliteratus, 1. c. p. 147, from the Co- 
lorado Territory ; 1. bronteuSy 1. c. p. 144, from Philadelphia ; I. suhcyaneusj 
1. c. p. 148, frofai New Jersey. 
§ 3. Black species : scutellum pale or with pale markings ; apical segment 
of abdomen more or less white : — 
I. scelestuSf 1. c. p. 148, and T. extrematisy 1. c. p. 149, from Illinois. 
§ 4. Black species: scutellum pale; tip of first segment of abdomen more 
or less white : — 
I. cccruleitSy 1. c. p. 149, Eastern States ; I. azotusy 1. c. p. 150, and I. agnitusy 
1. c. p. 161, Delaware. 
§ 6. As preceding : abdomen fulvous at apex : — 
I. apicalisy 1. c. p. 152, from the Colorado. 
§ 6. Scutellum pale ; abdomen black, red, and white or yellow : — 
I. variegatuSy 1. c. p. 163, 1. inconstanSy ibid., and J. groteiy 1. c. p. 164, from 
the Colorado. 
§ 7. Scutellum pale ; apex and, usually, middle of abdomen banded or 
spotted with yellow or white : — 
I. nohilis, 1. c. p. 166, I. airifronSy 1. c. p. 157, Illinois ; I. JlavizonatuSy 1. c. 
p. 166, New York and Virginia. . 
§ 8. Scutellum pale ; abdomen banded with yellow, apex black : — 
I. comeSy 1. c. p. 168, Illinois and Delaware; I. parvuSy 1. c. p. 169, 
Illinois and New York ; I. pictifronSy 1. c. p.' 160, and I. hizonatuSy ibid., Colo- 
rado Territory. 
§ 9. Scutellum pale ; thorax black ; abdomen red, or red and black : — 
J. amhiguiiSy 1. c. p. 161, and I. funestus, 1. c. p. 166, Pennsylvania ; I. vinu- 
lentus, 1. c. p. 162, I. consimilisy 1. c. p. 163, I.juxtiiSy ibid., I. animosusy 1. c. p 
164, and I. vjdtus, 1. c. p. 166, Colorado Territory. 
§ 10. Scutellum yellow or red ; thorax more or less red ; abdomen red, or 
red and black : — 
I. mninigery 1. c. p. 167, Eastern States ; L discusy 1. c. p. 168, I. longuluSy 
1. c. p. 171, L proinnquus, 1. c. p. 172, I. subfuseusy 1. c. p. 173, I. hrevipennisj 
1. c. 174, I. lavigatusy 1. c. p. 176, and I. dorsalisy 1. c. p. 177, from the Colorado 
Territory; I. subrufns, 1. c. p. 163, and I. rtdiliis, 1. c. p. 169, Virginia; I. 
vicinm, 1. c. p. 169, I. rubicundiiSy 1. c. p. 176, and I. lewisiiy 1. c. p. 177, Illinois ; 
I. annuUpeSy 1. c. p. 170, and I. pusUhtSy 1. c. p. 171, Delaware ;' Z sandixy 1. c. 
p. 174, New York ; Z ? trogiformisy 1. c. p. 176, New Jersey. 
§ 11. Scutellum black ; abdomen red, or red and black : — 
Z rcgnatrix, 1. c. p. 178, Eastern States ; Z scmicoccineusy 1. c. p. 179, Dela- 
ware and Virginia ; I. californicus, 1. c. p. 180, Z incertuSy ibid., and Z riffi- 
zmiatuSy 1. c. p. 183, New Jersey ; Z virginicuSy 1. c. p. 181 ; Z syphaXy ibid., 
1864. [voL. I.] 2 H 
