o6 THE JOURNAL OF THE 



larva is of a dull flesh-color, cylindrical in shape and measures 

 about .87 of an inch in length. The mandibles are broad, 

 triangular and appear capable of doing good service. The 

 head is yellow and free from the body. There are three 

 pairs of thoracic and no abdominal legs, and the abdomen 

 is divided inlo nine segments, the last one being 

 square, with a sharp spine on each side. 



The pupa measures .58 of an inch in length and is also 

 of a dull tlesh color. The head is large and prominent. 

 The legs and elytra are free. There is a tubercle on the 

 edge of each abdominal segment. The male and female 

 pupse are easily distinguishable, there being upon the tho- 

 rax of the female two prominent tubercles, which, in the 

 male, are prolonged into horns. 



The imago is dark brown or black, measuring about .75 

 of an inch in length. The elytra and thorax are very 

 rough, being covered with a large number of prominent 

 tubercles. There are two prominent horns upon the thorax 

 of the males which are wanting, however, in the females. 

 Newly hatched specimens are generally light-brown, but 

 become darker with age. 



The full-grown larviP, pupa3, and imagos were all taken 

 late in July, which seems to lead to the inference that the 

 time passed in the pupa state is short, probably not exceed- 

 ing a week or ten days. As soon as the insects have com- 

 pleted these transformations they work their way out by 

 the same holes throui!:h which they entered. 



