658 Wisconsin Academy of Sciences, Arts and Letters. 
Neuroma postica Walker. 
Neuronia postica Walker, Brit. Mus. Cat. Heur., 1852, 9„ 
Hagen, Syn. Heur. H. Am., 1861, 251; Proc. Bost. Soc.. 
Hat. Hist., 1873, 294; Verh. zool.-bot. Ges. Wien, 1873, 
398. Banks, Proc. Ent. Soc. Wash., VI, 1904, 211; Cat. 
Heur. Ins. IT. S., 1907, 35. Ulmer, Gen. Insectorum,. 
Fasc. 60, 1907, 24. 
Imago. —Length of body 14-16 mm. Expanse, male, 40' 
mm.; female, 47 mm. Antennae fuscous with tawny annula- 
tions at base, luteous at tip. Palpi yellowish brown, darker 
distally. Face pale yellow, with darker hair; the median 
ocellus large, white, conspicuous. Head above brown; a pair 
of small warts behind the median ocellus, another posterior to* 
the paired ocelli, and a long transverse pair posteriorly, 
clothed with white pubescence and longer brown hair. A 
pair of large warts on the prothorax, similarly clothed. 
On the mesothorax, the wing callosities, a longitudinal ridge on 
either side of an impressed median line, and a posterior median 
area, are clothed like the head and prothorax. Abdomen yel¬ 
lowish-brown above, with a median blackish line; a lateral 
blackish line on either side; paler beneath. Legs fulvous, with 
fulvous spines and spurs. Anterior wings fulvous with fuscous 
reticulations, more numerous near the tip; the apex distinctly 
margined with fuscous, interrupted in each apical cell, except 
the last, by a fulvous spot. A fuscous squarish spot of larger 
size at the arculus. Posterior wings fulvous with an angulated, 
sub-apical, fuscous band, and, in the males, slight indistinct 
fuscous spots on the apical margin. 
In the male the ninth dorsal segment is produced into what 
McLachlan considers the penis cover, with a sheath on either 
side, springing from the base. The cover is excised at the apex, 
with two spine-like fulvous hairs on either side of the excision: 
it is hollowed medially beneath and slightly upturned at the 
tip. The last segment beneath ends in a thickened piece with 
a large concavity in the end, the ventral and dorsal rims of the 
cup being strongly toothed. From this on either side springs 
