24 
carry the larva through the entire life. In late autumn the majority of 
the larvee which may be found appear to be of two distinet sizes, yet 
at this time, also, a certain number of larve of almost every size will 
be found. The prevalence of the two sizes mentioned would seem to 
indicate that the species occupies two years in its larval development, 
yet Dr. Riley, in Bul. 23, Maryland Agricultural Experiment Station, 
was inclined to attribute the difference in size to difference of period of 
egg laying and hatching and to believe that the insect may go through 
all these transformations in a single year. He believed that the eggs 
are laid during any of the summer months, and often during Septem- 
ber. It is true that at Washington the beetles are seen flying from 
June to the middle of September, and sometimes even later. 
The full-grown larva, which has been carefully described by Dr. 
Riley on page 78 of the bulletin above mentioned, may be distinguished 
trom the larva of Lachnosterna by the possession of stiff ambulatory 
bristles on its back and by the darker, more horny, and more closely 
punctured head. The whole body, in point of fact, is harder—it is not 
so soft and delicate as that of the Lachuosterna larva. Aside from 
these structural peculiarities, the larva, when placed upon a smooth 
surface, crawls upon its back with great ease and rapidity. The Lach- 
nosterna larva, when so placed, struggles awkwardly about and rests 
upon its side. The Allorhina larva, however, immediately turns upon 
its back, straightens its body out, and by the alternate contraction and 
expansion of the body segments wriggles rapidly away in a straight 
line. Frequently, on the Capitol grounds, the larvee are driven to the 
surface by a heavy fall of rain, struggle out of the lawn upon the 
smooth concrete walks, and are noticed scooting about on their backs 
in such numbers that the sweepers frequently collect them almost by 
the bushel in a morning. This habit was first recorded by the writer 
in the article in the Canadian Entomologist above cited. 
In the spring, the full-grown larva forms for itself a tough, hard cell 
of earth, in which it changes to pupa, remaining in the pupal stage 
about a month, the adults issuing in May and June, although in 1881 
a single beetle was reared in the fall—October 19. The following year 
a single specimen issued as early as Mareh 12. The cell of the pupa in 
this latter case (the one figured) was oval in shape and was composed 
of the sand in which the larve were put for breeding purposes. It 
was thin shelled and quite strongly cemented with some mucilaginous 
larval secretion. The full-grown larva, the adult beetle, the pupa cell, 
and the pupa itself are well shown in the accompanying figure. 
REMEDIES. 
Where the beetles are abundant and are damaging ripe fruit it is a 
comparatively easy matter to attract them in numbers to a little heap 
of spoiled fruit upon which has been sprinkled Paris green. In this way 
many may be killed. An experiment of this kind was first tried at the 
