SCUTELLEROIDEA—DOUGLAS LAKE REGION 49 
July 8, is suffused with pinkish, but the alternations on the 
connexivum are very well marked. 
Family Cydnide 
_ Although numerous and seemingly favorable habitats of the 
members of this family occur in the Douglas Lake region, the 
surprising paucity, both in individuals and in species is worthy 
of mention. The cultivated and uneultivated areas in low, 
marshy places in the open and along the woodlands would ap- 
pear to offer excellent breeding and feeding places for thyreo- 
eorids; and one would expect to find ecydnids on the sandy hills 
and lake shores. We were much disappointed on discovering 
the real situation, for the family is represented in our collection 
by but twenty specimens representing five species. These are 
the result of our efforts during the entire two seasons. 
Subfamily Thyreocorine 
Thyreocoris ater (A. and S.) 
Nine specimens, four adults and five nymphs, are represented 
in my collection. In 1919 the first specimen of the season was 
a nymph in the second instar taken in a low, grassy creek 
bottom about two miles north of North Fishtail Bay on July 
16. <A low lying field of red top grass (Agrostis alba) just 
north of Ingleside proved to be our best collecting ground for 
the species, all our other specimens of this season having been 
taken here. On July 22 two adults and two nymphs were swept 
from the still uncut grass. One nymph is in the second instar, 
the other is in the fourth. Two days later another adult and 
a nymph were taken in the same place. An adult was dis- 
covered in beach drift near the Biological Station on June 30 
by M. R. Hatch. In the Station records I find a specimen re- 
corded from beach drift by R. F. Hussey. 
This is the largest and shiniest species of thyreocorid in the 
region. The general form is broadly, regularly ovate and the 
punctures on the scutellum are not deep. 
Thyreocoris nitiduloides (Wolff) 
One of the members of my class in Entomology submitted a 
specimen of this species for examination and later a satisfac- 
tory exchange was effected whereby it became my property. 
