THE SADDLED PROMINENT. 343 



Both sexes of this species are given as Figures 33, 34, 35, and 36. 

 Ichneumon sublatus also emerged the middle of September 

 from pupae collected at Norridgewock the first of August. 

 How many generations a year there are for sublatus in connec- 

 tion with the saddled prominent was not ascertained. The 

 only seasonal data which can be given is that it passed the 

 winter in the pupa of its victim and emerged early in June, that 

 it was on the wing in great numbers (evidently freshly emerged 

 individuals) the first of August in the infested regions and that 

 the species also emerged in mid-September from pupae of the 

 saddled prominent. Of the various predaceous wasps, appar- 

 ently attracted by the saddled prominent, species of Ammo- 

 philas were particularly abundant. 



The larvae and adults of Calosoma were numerous in the 

 infested woodlands at North Fryeburg, Upper Gloucester, 

 Norridgewock and Mercer during the season. Both the beetles 

 and larvae carried on an active warfare against the caterpillars 

 and were found climbing the tree trunks for their prey though 

 their supply of food was largely taken from the ground or a 

 foot or two up the trunk. One of these beetles was, however, 

 found on the branches of a small tree. Figures 38 and 39 

 illustrate two stages of this species. 



The larvae of Calosoma are also active in feeding upon the 

 buried pupae of the saddled prominent and were particularly 

 fond of the fresh pupae the contents of which they were fre- 

 quently found to be devouring early in August. 



Pterostichus lucublandus was especially abundant last spring 

 under beech trees where the pupae were hibernating. These 

 and other common ground beetles unquestionably take their part 

 in feeding upon these caterpillars. 



Of the predaceous bugs which were numerous, Podisus 

 modestus was most active in feeding upon the caterpillars of 

 the saddled prominent. Figure 37 gives this species in a 

 fairly characteristic position with its beak plunged into the 

 caterpillar (this species it usually attacks a little behind the 

 head) and braced back while it drains the caterpillar fluids. 

 Tree trunks where these bugs were working were decorated 

 with dead caterpillars half sucked and hanging limp like an 

 inverted U, and little heaps of dead caterpillars at the base of 

 the trees testified to the ability of these blood thirsty bugs. 



