AMERICAN HYMENOPTERA, 229 



the basal joint within, sometimes also on second and third joints, yel- 

 low ; head mostly yellow, a large spot, trilobed below, on vertex from 

 antennae to summit, a smaller irregular orbital spot above and outside 

 of each eye and the back of head, black ; tegulae, collar, V-spot, scutel 

 and behind, ridges of metathorax, basal plates and a dot above poste- 

 rior coxae pale yellow ; abdomen reddish-yellow, with a large divided 

 spot on the first, second and third segments above and the three apical 

 segments, black ; legs same color, base of coxae, apical half of posterior 

 femora and tips of tibiae black ; wings faintly smoky, nervures brownish. 



The male has the cheeks entirely yellow, pleura yellow, breast waxen, 

 tergum rufous yellow, except some black spots at base ; basal plates 

 mostly black, legs of one color, except a dot on posterior coxai and a 

 line down the four posterior femora above. 



Var. av The spot on outer orbit entirely wanting. Pennsylvania. 



Var. h. A yellow spot and dot beneath, on the pleura, below the an- 

 terior tegulae. Connecticut. 



New England, New York, New Jersey, Pennsylvania, North West 

 Territory. 



6. T. lobatus. 



Allanius lobatus, Norton, Bost. Jour. vii. 1860, 253, 32. 9 . 

 Tenthredo lobatus, Norton, Bost. Proc. ix, 121. 

 Black ; most part of head, tegulse, two edges of anterior angle and V-sp<)(, 

 pale yellow. Length 0.48 — .50. Br. wings 0.90 inch. 



9 . — Color black, abdomen long and flattened, antennas long, a white 

 spot on inside of basal joint; head yellow, black behind, with a spot 

 on vertex, trilobed below, extending from antennae to summit, touching 

 the eyes above and extending a narrow line half down their 9rbits ; 

 tegulae, two edges of anterior angle, V-spot, four slender lines on ridges 

 of metathorax, sides of basal plates and a small dot below, pale yel- 

 low; legs pale yellow, coxas black, except at tip; a slender black line 

 on anterior femora and tibiae above and on intermediate femora and ti- 

 biae; posterior femora, tips of tibiae and tarsi above black; winjrs 

 faintly smoky. 



Var. a. — 9 . A black spot near base of mandibles, two dots behind 

 ocelli, spot below tegulae, four lines at V-spot, apex of scutel and two 

 dots before, pale yellow ; a black line down anterior tibiae. 

 Farmington, Connecticut. Not common. 



7. T. angulifera. 



AUantus angulifer, Norton, Bost. Jour, vii, 1860, 252, 31. 'J, 

 Tenthredo angulifer, Norton, Bost. Proc. ix. 121. 

 Black ; most part of head, tegulse, collar, two or four lines on thorax, angu- 

 late spot on pleura and venter pale yellow. Length 0.47. Br. wings 0.90 in. 



TRANS. AMER. ENT. SOC. (30) NOVEMBER, 18C8. 



