264 INSECTA SAUNDERSIANA. 
bb. Second feeler-joint short; third furcate ..1...ss sess Schizotachina, n. 
convecta, exul. 
aa. Fifth feeler-joint short. 
b, Sixth feeler-joint short, stout. 
insolita. 
bb. Sixth feeler-joint long, slender. 
ce. Prebrachial vein forming a slightly acute angle at its flexure. 
grandis. 
ec. Prebrachial vein forming a hardly acute angle at its flexure. 
d, Sixth feeler-joint bare. 
australis. 
dd, Sixth feeler-joint pubescent. 
squamata. 
ecc, Prebrachial vein forming a right angle at its flexure. 
d. Sixth feeler-joint bare. 
e. Third feeler-joint much longer than the second. 
truficornis. 
ee. Third feeler-joint much more than twice the length of the second. 
f. Facialia without bristles. 
concisa. 
ff. Facialia bristly along half the length. 
remota. 
eee. Third feeler-joint full four times the length of the second. 
basalis. 
dd. Sixth feeler-joint pubescent. 
lucifera. 
ccec. Prebrachial vein forming an almost right angle at its flexure. 
d, Third feeler-joint less than twice the length of the second. 
ornata. 
dd. Third feeler-joint not less than twice the length of the second. 
albifrons, latifrons, nigrorufa, atrata, socia, fuliginosa. 
ddd. Third feeler-joint full four times the length of the second. 
proxima, tincta. 3 
dddd. Third feeler-joint six times the length of the third. 
imbuta. 
ececcce. Prebrachial vein forming a hardly obtuse angle at its flexure. 
d. Third feeler-joint less than thrice the length of the second ; sixth bare. 
densa, hebes. , 
