432 



NEW YORK STATE MUSEUM 



was awarded a silver medal in group 112. This collection was 

 designed to show the life history and habits in particular of the 

 more injurious species affecting valuable forest trees, and one 

 tray was given to characteristic insects of the Adirondacks. Spe- 

 cial effort was made to depict, so far as possible the life history^ 

 habits and methods of work of those forms of economic importance 

 and to show whenever practicable the natural enemies of value 

 in keeping these species in control. A brief catalogue of the 

 exhibit is given below. 



CATALOGUE 



Insect galls 



This collection, occupying two nearly perpendicular trays and 

 representing the work of 53 species, was devoted to the peculiar 

 vegetable deformities produced by insects, since these forms are 

 always of great popular interest. 



Galls of sawflies 

 Tenthredinidae 



1 Willow apple gall 



Pontania pomum 

 Walsh 

 4-winged gall flies 



Cynipidae 



2 Spiny bullet gall 



Rhodites bicoTor Harr. 



3 Mealy rose gall 



Rhodites ignota O.S. 



4 Rose root gall 



Rhodites radicum 

 O.S. 



5 Spiny rose gall 



Rhodites spinosa 



Ashm. 



6 Seedy blackberry gall 



Diastrophus cuscut- 

 aeformis O. S. 



7 Furrowed blackberry gall 



Diastrophus nebulosus 

 O. S. 



8 Oak apple 



Amphibolips conflu- 

 ent u s Harr. 



9 Larger empty oak apple 



Amphibolips inanis 

 O.S. 



10 Scrub oak gall 



Amphibolips ilici- 

 f o 1 i a e Bass. 



11 Oak plum gall 



Amphibolips prunus 

 Walsh 



1 2 Horned oak gall 



Andricus ?corni- 

 g e r u s O. S. 



13 Gall of wool sower 



Andricus s e m i n a t o r 

 Harr. 



14 White oak club gall 



Andricus clavula 

 Bass 



15 Small oak apple 



Andricus singularis 

 Bass. 



16 Oak petiole gall 



Andricus petiolicola 

 Bass. 



17 Oak-woolly gall 



Andricus lana Fitch . 



18 Woolly oak gall 



Andricus operator 

 O. S. 



19 Gouty oak gall 



Andricus puncta- 

 t u s Bass. 



20 Spiny oak gall 



Cynips prinoides 

 Beutm. 



