58 Journal New York Entomological Society. [Voi. v. 
Form interjecta. A row of green dots connects the basal and subapical green 
marks (plate III, fig. 3, right wing). 
Form viridiclava. The green forms a continuous band, bordering the cell, 
notched on the outer side (plate III, fig. 4). 
Form elliotii. The green band encroaches on the cell, or even surrounds the 
discal dot (plate III, fig 5). 
Synopsis of Varieties of the Larva. 
Form A. —Flesh colored, horns and ridges bright red shading to pinkish; black 
lines all present, waved, confluent, forming irregular areas about the glandular dots ; 
no quadrate spots; often no detachable spines (plate III, fig. 9). 
Forvi B, —Sordid purplish, the black lines shaded; horns and ridge broadly 
bright ferruginous, broken on the interspaces, 6-7, 9-10 and 11-12 by quadrate dark 
brown spots. 
For?n C. —Dorsum sordid purplish, sides green; marks as in lorm B (plate IIf, 
fig. 6). 
Form D. —Green, the black lines faint; horns and ridge yellow, broken by 
quadrate spots as in form B (plate III, fig. 8). 
Form E. —Green, the ridge and horns red ; quadrate brown spots on joints 3-4, 
4-5, 6-7, 9-10 and 11-12 (plate III, fig. 7). 
Special Structural Characters. 
These characters have been already given for the Florida form (see 
Journal N. Y. Ent. Soc., iv, 125). In the New York forms there are 
usually no caltrope patches on the subdorsal horns of joint 13. The 
patch on the lateral horn of joint 12 is present when there is only one 
pair of detachable spines (on joint 13), but absent when the second 
pair is present, and even absent in stage vii, before the spines have ap¬ 
peared, so that it may be determined in this stage whether there will be- 
one or two spine patches. The second pair of spine patches appears 
above this horn (lateral of joint 12) and replaces the caltropes function¬ 
ally ; but probably the spines are not homologous with caltropes as we 
formerly supposed (Journal, iv, 3, foot note) since both may be present 
on the same horn and the caltropes abruptly disappear before the spines, 
not being converted into them. 
Our larvae do not hide by day so persistently as the Florida form, 
though the habit is present in some degree. 
Affinities, Habits, etc. 
The range of variation in the moths as they occur in New York is 
illustrated on the plate (figs. 1 to 5). The variation of the amount of 
green on the fore-wings is from delphinii , the minimum, to elliotii , the 
maximum. The ground color also varies from dark ferruginous brown 
