122 Indian Museum Notes. [Vol. V. 



which it is attached. My grubs sometimes spun in the angle at the base of a 

 glass bottle, sometimes at the neck. The web is quite smooth and looks like very 

 thin Japanese paper ; the object to which it is attached is not lined. The chysalis 

 is horn-coloured, and the moth emerges about seven days after pupation. The 

 fore wing of the moth on the upper side is somewhat chocolate-brown with white 

 markings and gold and white tips, and the hind wing is very narrow, deeply 

 fringed, and smoke-grey." 



The moth twice enlarged is shown on Plate XV, fig. 4 (the 

 antennae wanting), the pupa (4a) inside its transparent cocoon after 

 the moth has emerged figured natural size. 



4. Diapromorpha melanopus t Lacord, Family Chrysomelidse. 

 Order Coleoptera. 



The " Orange Beetle ' 3 has been reported to do damage to lichi 

 trees at Kalimpong, Sikkim, by Mr. A. C. Hartless. For further 

 notes on the subject see page 125. 



On Mangifera Indica, Linn. Natural Order Anacardiacem. 



The Mango. 



1. Idiocerus clypealis, Lethierry. Family Jassidae. Sub-order 

 Homoptera. Order Hemiptera. 



In "Indian Museum Notes," vol. i, pp. 4, 5 (1889), certain 

 insects of the family Jassidse of the homopterous section of the Rhyn- 

 chota are recorded as doing very great damage to the mango crop 

 in Saharanpur in the North- Western Provinces. The insects were 

 described as three new species by Mons. Lethierry of Lille, and 

 named by him Idiocerus niveosparsus, I. alkinsonii and f, clypea- 

 lis. Descriptions of them will be found in "Indian Museum 

 Notes," vol. I, pp, 187, 188 (1891), the nymph and imago of the first 

 being figured on plate xii, figures 6, a and b of the same volume. 

 Certain remedies were tried by Mr. Gollan, such as mixtures of soap, 

 tobacco, sulphur, kerosine diluted with milk, etc., but without notice- 

 able effect. Mr. Gollan reports that in some years these insects 

 appear in myriads, followed by a very poor crop of fruit. Probably 

 the remedies used were not skilfully applied, or were applied at the 

 wrong time. 



In the middle of April, 1901, I visited the Experimental Station, 

 Cawnpore, in the gardens attached to which and in the large Public 

 Gardens adjoining are numerous mango trees. The trees at this 

 period had almost finished flowering, there being a very good show 

 of flowers this season, but very few of the trees had set any fruit, 

 and the mangoe crop may be said to be a failure. This is caused by 

 the depredations of a small homopterous insect which in the imago 



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