208 NEW YORK STATE MUSEUM 



apjjcarin^f at Amherst Mass., accordinir to Professor Cooley, about the 

 middle of May and all cmcrtrintf within a very short time. Professor John- 

 son's observations show that the insect is two br(;(jded and that the females 

 confme themselves to the Iiark of the tree, and may be found from the 

 trunk to the very tips of the twigs. The males occur both on the bark and 

 on the underside of the leaves. The female is stated to lay about 70 eggs 

 as a rule, Init the number varies from a very few to about 85. 



Distribution. This is a native American species and appears to have a 

 wide range, il having bt^en recorded from a numJKir of eastern and western 

 states. 



Description. The eggs are about ' 12 inch in length, ellipsoidal and pur- 

 plish in color. The young are about ' 5 inch in length, oval in outline, 

 broadest posteriorly, reddish, and with distinct anal filaments, about as long 

 as the width of the middle of the body. The female scale is usually 

 broatlest near the middle, about ' ,s inch in length, conve.x, moderately thick 

 and white, though often coated i)y black ])articles from the bark. The 

 exuviae are long, brown, frequently almost completely hidden by the adher- 

 ent coatings. 



Natural enemies. Professor Johnson has reared two parasites from this 

 insect, P e r i s s o p t e r u s pulchellus How. and Physcus vari- 

 cornis How. He has also observed the j'oung and adults of the twice 

 stabbed latlvbug, C h i 1 o c o r u s b i v u 1 n e r u s Muls., feeding on it. 



Bibliography 

 i(S99 Cooley, R. A. Mass. Agric l'"xp. Sta. Sjiec. liul. p. 41-43 



Tuliptree scale 

 Iutlcca)iiit)ii t iilipi ferae Cook 



Large, nearly hemispheric brownisli scales occurring in clustered masses on the 

 underside of the limbs of tuliptrces. 



The tuliptree is comiiKinK- unalfccicd b_\- insects, but in this large 

 species of PLulecanium it finds an enemy that occasionally causes con- 

 siderable injury. Several twigs from a tuliptree, showing a very bad con- 



