242 MAINE) AGRICULTURAL EXPERIMENT STATION. I9II, 



We cannot say how far south they are, but the centre of the 

 infestation seems to be in the vicinity of Parlin Pond. The 

 worms have been working on all sizes of spruce and fir trees 

 and we think they have worked more on the fir than on the 

 spruce. The worms have eaten this season's growth and the 

 small trees from which the entire season's growth has been 

 stripped are apparently dead." » 



Some pupae received from Greenville Junction were para- 

 sitized by Piinpla inquisitor and a Braconid parasite was also 

 present in the State this season. Lots 1366 and 1381. 



■ HYMENOPTERA. 



TENTHREDINIDAE. 



Craesus latitarsus. 



Larvae of this species were common upon the birch (Betula 

 populifolia) in the vicinity of Orono in August and September. 

 Adults appear in September. Lot 1420. 



Nematus Brichsonii. 



This species is apparently again on the increase, many larch 

 trees (Larix laricina) were observed near Houlton July 20, to 

 be badly attacked. Lot 1372. 



ICHNEUMONIDAE. 



Linineria guignardi and Hemitelcs sp. 



The first named species is not uncommonly found as a para- 

 site of the red-humped caterpillar (Oedemasia concinna). This 

 season, (August to October) cocoons were received from sev- 

 eral localities. From some parasitized caterpillars sent from 

 Easton, Maine, were obtained specimens of Limneria and also 

 two hyperparasites belonging to the genus Hemiteles, resem- 

 bling H. sessilis and H. nemativorus but differing from each. 

 An examination of the cast skins revealed the hyperparasitic 

 character of Hemiteles. Lot 1423. 



Amhlyteles montanus. 



This species was bred from some specimens of Autographa 

 brassicae Orono, Sept. 7, 191 1. Lot 1401. 



