TKTANOCERA. . 123 



Legs luteous, three last joints of the fore tarsi, one of the inter- 

 mediate ones, and two of the hind ones, blackish ; hind femora of 

 the male beset below with black bristles. Wings lutescent, unico- 

 lorous, fore and apical border not clouded, transverse veins mar- 

 gined with brown, the posterior one almost straight. 



Hob. North Red River. 'English River. (R. Kennicott.) 

 Observation. Very like Tet. sylvatica Meig., but still nearer 

 allied to Tet. unicolor Loew, distinct from the former by the frontal 

 furrow, which is very much abbreviated here and by the anterior 

 margin which is not shining; from the latter, which it also exceeds 

 in size, by the striped thorax, and the narrower and less obsolete 

 frontal furrow. 



14. T. rotundicornisLoEW. and 9- (Translated from the Berlin. 

 Entom. Zeitschr. 1861, p. 344, by B. Osten-Sacken.) Ex helvo glandi- 

 color, frontis opacse vittulis lateralibus ordinariis sublaevigatis, distinctis, 

 fossula media sequali usque ad anteriorem frontis marginem producta, 

 antennarum articulo tertio ovato, superius non exciso, seta pilis nigris 

 longis, sed raris plumata, alis lutescentibus, costa? dimidio secundo et 

 apice anguste fuscis, venis trausversis fusco-limbatis, posteriore sub- 

 recta. 



Pale yellowish acorn-colored, the ordinary lateral stripes of the opaque 

 front rather shining, distinct, the intermediate furrow equal, extended to 

 the anterior margin of the front, third joint of the antennae ovate, not 

 excised superiorly, bristle with long black, but rare, hairs, wings lutes- 

 cent, the posterior half of the costa and the apex with a narrow brown- 

 ish cloud, transverse veins clouded with brownish, the posterior one 

 almost straight. Long. corp. 0.26. Long. al. 0.22 0.26. 



Occiput yellow, with a heart-shaped shining-white spot. Front 

 bright yellow, opaque, the ordinary lateral stripes shining, rather 

 broad, the intermediate furrow shining, of equal breadth, entire. 

 Antenna? short, ochraceous, third joint ovate, not excised supe- 

 riorly, the bristle with long, black, but sparse hair. Thorax above 

 with four darker lines, the intermediate ones entire, the lateral 

 ones interrupted, not seldom all four obsolete. Abdomen unicolor- 

 ous with a rather obscure lateral vitta, which is generally obsolete 

 in the male. Legs luteous, last joints of the tarsi black, hind 

 femora of the male beset below with black spines. Wings lutes- 

 cent, the posterior half of the costal border with a paler, the apical 

 border with a more saturated infuscation, transverse veins clouded 

 with fuscous, the posterior one nearly straight and perpendicular. 



