SMULYAN: NEW ENGLAND TENTHREDELLA. 405 
Head in greater part, and antennae, ferruginous; dorsal surface of thorax 
ferruginous with black markings, .redinmcula (MacGillivray), p. 457, 
15. Dorsal surface of thorax beyond collar much marked with pale. A rather 
broad yellow line from nearl}^ the posterior margin of the head along 
the inner orbit to about the middle of eye; mesoscutellum broadly 
yellow on each side; a broad obtuse-angled yellow band on the meso- 
episternum; greater apical portion of posterior femora ferruginous 
formosa (Norton), p. 438. 
Dorsal surface of thorax beyond collar with no, or with few pale 
markings 16. 
16. Legs yellow (may be brown, or bro^vnish in part) and black 17. 
Legs largely ferruginous, or pale ferruginous, and black 22. 
17. Front below antennae, anterior half of meso-episternimi in part, and as a 
rule more or less of the basal portion of the venter, yellow, or yellow- 
ish 18. 
Front below antennae, and anterior half of meso-episternum, black; basal 
portion of venter as a rule not yellowish 19. 
18. Front above antennae and vertex with a large black spot distinctly tri- 
lobed anteriorly and less distinctW laterally; meso-episternum except a 
small longitudinally elongate spot on the upper anterior portion along 
and touching the meso-epimeron, yellow, or pale yellow; prescutum, ex- 
cept very rarely, with a yellow V-spot 
secunda (MacGillivray), p. 433. 
No such black spot on front above antennae and vertex ; meso-episternum 
with a yellow, or pale yellow, obtuse-angled band, or only a large spot 
on the anterior portion; prescutum with no V-spot 
eximia (Norton), p. 435. 
19. Coxae entirely, or in greater part, yellow, or pale yellow; meso-episternum 
as a rule with an oblique yellowish band on the posterior half. Legs, 
at least in part, with longitudinal black bands or lines, or interrupted 
bands or lines (often widely) ; lower half, or nearly half, of checks and 
lower orbit, posterior dorsal margin of lobes of collar rather broadly, 
tegulae, and greater part of meta-postscutellum, yellow to cream-white 
signata, var. 1, inclusive (Norton), p. 445. 
Coxae entirely or in greater part black, as a rule no band on the posterior 
half of the meso-episternum; legs with much black, or with more black 
than yellow 20. 
20. Tibiae yellow to straw color except apical portions, and sligiitly at base; 
coxae black ciiiclitibiis abdotninalis Smulj'an, p. 414. 
Tibiae not of that type; coxae may be yellowish in part 21. 
21. Coxae black; posterior dorsal margin of lobes of collar, tegulae, and inter- 
mediate femora, black semirubra (Norton), p. 449. 
Coxae in part yellowish; jiosterior dorsal margin of lobes of collar, tegulae, 
and the intermediate femora usually before, or beneath, yellowish 
»igriata, var. 2, etc. (Norton), p. 446. 
22. Coxae entirely, or in greater part, black; pectus, and meso-(^pist(>rnum 
