124 ENTOMOLOGICAL NEWS [May, '20 



young, and three of the adults were dead, adhering to lower 

 surface of leaf. These have been confined, with the hope of 

 rearing internal parasites. The greenhouse thrips has been 

 reported attacking citrus foliage in Florida, California (on 

 plants from Massachusetts), Demerara, and Sicily, but has 

 not been previously reported as a cotton pest to our know- 

 ledge. 



Another insect very common on cotton bolls, and infesting 

 probably thirty per cent, of t^em, is the destructive mealybug, 

 Pseudococcus virgatus (Ckll.), which during the summer very 

 heavily infested lima beans on vine and leaves, and to some 

 extent pepper foliage. It was at that time heavily parasitized 

 by a small Cecidomyid, probably Karschomyia cocci Felt, the 

 adults of which display the strange habit of hanging in rows 

 festooned on strands of spider web, where they perform a 

 rocking motion by means of the wings. On cotton the mealy- 

 bug occurs in all stages, the egg masses and young being 

 especially plentiful, protected beneath the base of calyx. 

 One or two bolls were turned quite white beneath the calyx 

 by their cottony secretions. A very few specimens of Ps. 

 citri (Risso) were found on the bolls, and one specimen of Ps. 

 longispiniis (Targ.). A number of adults of an undetermined 

 scale, very close to Coccus mangiferae (Green), were found 

 infesting the inside of the calyx on cotton bolls. 



The lace-bug, CorytJnica gossypii Fab., has done injury to 

 an occasional cotton leaf, but is very much more injurious to 

 the foliage of adjoining castor-bean and lima bean plants. 

 On the last two this insect is a pest of first importance, but 

 on cotton it is of little consequence. More important than 

 the Tingid has been the cotton aphis, Aphis gossypii Glov., 

 though the attack is light and scattering, due to the activity 

 of its natural enemies. They include the following, named 

 in about the order of their importance: Cycloneda sanguinea 

 L. ; Scymnus roseicolUs Muls.; a white fungus, Agrostalagnuis 

 albus; a Braconid parasite, that turns the body of the aphis 

 light brown; a Chalcidid parasite, that turns the body jet 

 black; a Chrysopid, and a species of Hypcraspis. In very 

 wet weather, the white fungus usually becomes the most 



