168 NEW YORK STATE MUSEUM 
has long been confused with JV. J/eucostigma. As an aid to the ready 
identification of these interesting larvae, the following table by Dr Dyar, 
is reproduced: 
Synopsis of the larvae of Notolophus 
Head yellow, colors in/general pales a= tee ... definita 
Head red 
A‘ distinct yellow subdorsal band) <j) rere leucostigma 
Gray marks predominate, the yellow band not notice- 
E10) | ee eer aoe ae Ber one RAR ccs yn 8 3 var. znornata 
Head black 
Warts crimson, brush-like tufts dark along the crest, 
the yellow lines along the sides broken into spots 
One black tnit imsyounedanvaeere eee eee vetusta 
‘DBwo black tuitsin youne tanvanyem ee eee var. cana 
Warts orange, brush tufts unicolorous, yellow or 
white, side lines usually continuous 
A lateral black hair-pencil from.joint 6........... antigua 
No: lateral black pencil.e-f4 22) t-te ee eee var. badia 
Natural enemies. If the experience of later years is any criterion, 
certain native birds may well be regarded as most effective natural 

Fig. a: pIMPLA INQUISITOR: a, full-grown summer larva; 4, hibernating larva ; c, mouth-parts of 
larva ; d, adult female; e, abdomen of adult male from side—all enlarged; c, greatly enlarged. 
(after Howard: U.S. Dep’t agriculture, Division entomology. Tech. ser. no. 5, 1897). 
checks upon this species. The following are those named by Dr Lintner 
as feeding upon the caterpillars of this pest: The robin, AZerula migra- 
voria Linn., the Baltimore oriole, /cferus galbula Linn., the black-billed 
© Psyche. 1896. 73342. 
