1914] Barber—Semipupal Stage in Lopheros 191 
In September, 1908, Mr. Schwarz and the writer found several 
scattered larvee of Lopheros fraternus Rand. under a log on the 
Virginia shore of the Potomac River near Plummer’s Island, Md. 
Some of these were left in place, the rest being taken to the office 
for breeding where the abnormally warm condition upset their 
transformation. Several of them developed wing-pads and all died 
before spring. But an early spring visit to the log disclosed normal 
pupe, with their larval skins, where the few larve had been left 
Fig. 1. Lopherus fraternus Rand. 
1, larvee x 5; 2, semipupa or prothetelic state x 4; 3, group of larve, natural size. 
the previous fall and from these adults issued. It was thought at 
the time that a long period of slow internal change at low tempera- 
ture was required in preparation for pupation which would be 
induced by the rise in temperature in the spring, but that the early 
rise in temperature when the first lot of larvae were taken to the 
warm office, had stimulated an attempt at the second operation 
before the first was completed, causing the abnormal and fatal 
