SYNOPSIS OF THE LAMIIN.i;;. 141 



O. toxaiius Uoni, 1885, Tr. Am. Ent. Soc. xii, 195. 

 Length 15 mm ^ .60 inch. Habitat. — Texas, Kansas. 



Clothed with grayish pubescence, the basal fifth and apical third 

 of the elytra darker, four irregular series of round yellowish spots 

 of denser pubescence ; thorax distinctly narrowed behind the lateral 

 tubercle, no dorsal callosities, but the median line may be abraded. 

 Feebly distinct from ciiKjulatii.^. 



<>• (*iiii;iilatus Say. 1827 (Saperda), Jour. Acad. Nat. Sci. v. 272; Lee, ed. ii 

 330; Iliild., Tr. Am. Phil. Soc. x, 52; Lee, Jour. Acad. Nat. Sci. ser. 2d, ii, 

 165; piitntor Thorns., Physis ii, 81; Hoi'n, Trans. Am. Ent. Soc. xii, 195; 

 rubiginosHS t>Dejeau, Cat. 3d ed. p. 369. 

 Length ]4-17 mm. := .56-. 68 inch. Habitat. — Middle States, New York, New 

 Jersey, Pennsylvania, Louisiana, Texas, Arizona. 



Variable in color and sculpture. The pubescence is usually cine- 

 reous, very inconspicuous on the basal fifth and ai)ical third of the 

 elytra between which points it is more condensed forming a broad 

 band as in te.uma, and with similar irregular rows of yellow spots. 

 In the form known as piitator, the integuments are piceo-fuscous, the 

 thorax with a small spine on each side in front of the base and three 

 small black facets on the disc placed transversely, the elytra at base 

 with numerous small granules or tubercles. That known as cingu- 

 latm is more variable ; the pubescence, though usually cinereous, 

 varies to yellowish ; the integuments from reddish brown to luteous, 

 the thoracic spine is mostly absent, never conspicuous ; the three 

 facets on the disc frequently obsolete, and the basal tubeivles of the 

 elytra only occasionally present, and then mostly in examples with 

 a thoracic spine or tubercle. I .-^aw two examples from Georgia with 

 the integuments reddish luteous, the pubescence yellowish and nearly 

 ecpially distributed on the elytra, and with the rows of yellow spots 

 nearly regular and very conspicuous. More abundant material may 

 show that te.vaiiiii< should be united with the present species. 



This is the celebrated hickory girdler. In western Pennsylvania 

 it occurs late in August and during September. Though apparently 

 preferring, it does not confine itself to hickory, l)ut likewise occa- 

 sionally girdles pear, apple, plum, linden, elm and various other 

 trees.] " Ham." 



TARICANHS Tlioms. 

 TarioHiiii!« f riiqiiii Tlioms., 1868, Physis i, 5. p. 74. 



I^ength 19 mm. ^= .7i> inch. Habitat. — Texas, Mexico. 



Gray pubescent, antenme 1-lack, with joints 4-11 pale at base; 

 elytra adorned with black tubercles and numerous fulvous s])ots ; 



TRANS. AM. ENT. .SOC. XXIII. MAY. 1896. 



