1910] Reiff — Hemileuca lucina Hy. Edw. 31 
tendency. ‘The most typical specimens of this aberration are females, 
as all the males of this form which I have seen show transitions to the 
type. I propose the name ab. lutea for this yellow form with the 
following diagnosis: 
Ab. lutea m.: alis ant. et post. grisescentibus, fascia lutea nec candida. 
Types, two 3’ (transitions), two 2 9, in the collection of the Bussey 
Institution. 
There is also a noteworthy male specimen, which has extraordi- 
narily strongly developed veins, which are of a blackish green-brown 
color. ‘The veins are irregularly marked with small greenish-brown 
specks along their entire extent. I am inclined to believe that the pupa 
from which this specimen developed was supplied with too great a 
quantity of lymph which enlarged the veins abnormally at the time of 
emergence, and later penetrated in the form of minute drops through 
the vein to the surface of the wing. 
I treated a small percentage of the fresh pupae (10 specimens) with 
cold, exposing them to a temperature of —3° C. for seven consecutive 
days. From these seven moths emerged, three of the pupae dying. 
Of the emerging moths (6 oc", 1 Q ) the wings of two males did not 
expand, but the others developed to the normal size. One male was 
a typical ab. obsoleta, the female was the typical ab. lutea. The color 
pattern of the other three males were normal, except that all had the 
black ground color somewhat lighter than specimens coming from 
unexposed pupae. 
As to the systematic position of H. lucina, I cannot but believe that 
it is a distinct species, and not a subspecies of H. maia. ‘The points 
which would support this position are as follows: 
1. There are differences in the caterpillars and pupae of H. maia 
and HH. lucina. 
2. No transitions between H. maia and H. lucina have been made 
known. 
3. The food plant of H. mata (Oak) and of H. lucina (Meadow- 
sweet) are fundamentally different. 
4. The habits of the young caterpillars are different. Those of 
lucina are gregarious, forming large clumps on the twigs of 
the food plant, while those of maza sit next to one another, in 
rows across the leaves. 
Maia pupates under normal conditions in the ground, while 
lucina pupates between dried leaves. 
OU 
