ob GEO. H. HORN, M. D. 



Head with a distinct traosverse depression between the eyes; color dull yellow; 



legs entirely yellow; elytra without ornamentation lividus. 



Head without transverse depression; color yellow; elytra with piceous lines; 



legs in part piceous triTittatus. 



T. lividus Lee. (Phyllobrofica), Trans. Am. Ent. Soc. xii, November, 1884, p. 

 28; mexicanus Jacoby, Biol. Cent.-Amer. vi, pt. 1, p. 571 ; id. Suppl, p 335.— Ob- 

 long parallel, yellowish testaceous, often dull, head and thorax with a slight 

 reddish tinge. Head smooth, a deep transverse frontal impression. Antennae 

 piceous, the three or four basal joints rufescent. Thorax one-fourth wider than 

 long, slightly narrowed at base, sides feebly arcuate, the margin at front angles 

 thickened, disc feebly convex, smooth. Elytra sparsely punctate, surface finely 

 alutaceous. Body beneath with piceous metasternum, otherwise yellow. Legs 

 entirely yellow. Length .16 — .25 inch. ; 4 — 6.5 mm. 



Male. — Last ventral with a truncate lobe at middle, limited each side by a 

 notch, disc of segment slightly concave; first joint of anterior tarsus distinctly 

 dilated. 



Female. — Last ventral broadly oval at tip ; tarsi not dilated. 



The sexual characters of the male are more nearly of the type of 

 PhyUobrotiea than to Diabrotica, to which latter the genus seems 

 most closely related. 



Occurs in Arizona south of Tucson. 



T. trivittatiis u. sp.— Form more slender and elongate than lividus, pale 

 yellow, moderately shining, elytra with piceous vittfe. Head smooth, without 

 impressed transverse line. Antennse piceous, with three basal joints yellow. 

 Thorax one-fourth wider than long, narrower at base, sides feebly arcuate, front 

 angles slightly thickened, disc moderately convex, smooth. Elytra oblong, but 

 little wider than the thorax; surface obsoletely finely punctate, color pale yel- 

 low, suture piceous, slightly broader behind, a basal piceous line, a vitta from 

 the umbone nearly to the apex, a short vitta between this and the suture near 

 the base, the side margin from the sutural angle nearly to base piceous ; epipleur» 

 pale. Body beneath entirely yellow. Legs yellow, all the tarsi, the posterior 

 tibiae, and the outer edge of the front and middle tibise, piceous. Length .16 — 

 .24 inch. ; 4 — 6 mm. 



Male. — Last ventral .segment with a, moderately prolonged truncate middle 

 lobe, limited each side by a notch, the disc of segment flat; first joint of ante- 

 rior tarsus distinctly dilated. 



Female. — As in lividus. 



This insect looks not unlike Luperus bivittcUus, with an addition 

 of a short piceous line near the base. The five specimens before me 

 are uniform in coloration. In this species some of the specimens 

 have the anterior coxal cavities so nearly closed that a unique speci- 

 men might give rise to doubt as to its position. 



Occurs in Arizona, Pinal Mountains (Wickham, 55 j. 



