210 MISC. PUBLICATION 657, U. S. DEPT. OF AGRICULTURE 
Anatis 15-punctata (Oliv.) is a rather large oval species, 6 to 8 mm. 
in length, with yellowish elytra, having seven black spots each and one 
common scutellar spot. A black disk on the thorax encloses two pale 
spots. It is a common form feeding on a variety of insects, including 
lepidopterous larvae, such as the gypsy moth larvae and cankerworms. 
The twice-stabbed lady beetle (C/clocorus stigma (Say) ) isa black 
shining species, 4 to 5 mm. long, with a rounded red spot on the disk 
of each elytra. The ventral seoments are red. It feeds on scale in- 
sects on pines and hardwoods in the Northern States, and is reported 
by R. C. Brown as important in holding down the European beech 
scale in the Northeast. During the severe winter of 1933-34 the 
scales were killed above the snow line, and the following spring this 
predator nearly wiped out the infestation that remained. 
There are numerous species of the genus Scymnus Kug. that are 
minute, pubescent forms. Those in the ‘collections of the Moor estown, 
N.J., laboratory have been associated with scale infestations on pines. 
Microweisea misella (Lec.) is a minute, black, shining species, about 
1 mm. in length, that 1s very abundant on scale infestations. Coccin- 
ella MEDIO OG Hbst., the nine-spotted ladybird, is a relatively 
large form, from 5 to 7 mm. in length, of a pale yellowish color, with 
four black spots on each wing cover and one on the suture. This 
species 1s common and widely distributed throughout the United 
States. It feeds on scale insects and aphids on conifers and hard- 
woods. (. transversoguttata Fald. feeds on scale insects on pines in 
the more northern States. 
The convergent lady beetle (//ippodamia convergens Guer.) is an 
oblong-oval beetle, from 6 to 8 mm. in length. The head is black with 
a pale transverse center spot. The thorax has a pale margin and 2 
distinct discal bars; the elytra are reddish with a black scutellar spot 
and 12 more or less distinct spots. This species is widely distributed 
in the United States, and it is often found in clusters of thousands of 
individuals. It feeds on scales and aphids. 
Ay per aspis binotata (Say) is a small, black, shining beetle, about 
2.5 mm. in length, strongly punctate, and with a rather lar ge yellowish 
spot on the middle of the elytra and often a fainter apical: spot. This 
beetle is widely distributed in the eastern part of the United States. 
Both the adults and larvae feed on scale insects, particularly on the 
pine tortoise scale (Z’oumeyella numismaticum Pt. & McD.), which is 
occasionally very destructive. It is very effective in controlling out- 
breaks of this pest. Coleomegilla maculata (Deg.) is a fairly large 
species, 5 to 7 mm. in length, of a general reddish color, with a red 
triangular spot on the front of the head, 2 on the thorax, and 10 on 
the ely tra, 2 of which are on the suture. This is a common species 
hibernating gregariously and feeding on aphids and scales on a variety 
of plants. 
Famity CUCUJIDAE 
The Flat Bark Beetles 
The flat bark beetles form a small and relatively unimportant group 
in the forest, although some forms are very destructive in granaries. 
The forest species occur under the bark of dead and dying “trees and 
logs, where they act as scavengers. The adults are usually very de- 
