No. 2.] Notes on insect pests from the Entomological Section 71 



"April I2th, 1880, specimens of orange leaves infested by this 

 scale were received from Mr. G, W. Holmes, Orlando, Fla. At this 

 date males were found both in the pupa and adult state. The females 

 also varied in size, and some of them were ovipositing. Eggs were 

 placed on an orange tree for special study. 



" April 13th, the eggs began to hatch The young larvae are 



quite active, but they settle soon after hatching. Some settled the 

 same day that they hatched. 



"April 14th, it was found that the young lice, although only 

 twenty-four hours old, had formed scales which completely concealed 

 them from sight. These scales resembled in appearance the fruiting 

 organs of certain minute fungi. They were white, circular, convex, 

 with a slightly depressed ring round the central portion ; their tex- 

 ture was quite dense, and they were not firmly attached to either 

 the insects or the leaf, a slight touch being sufficient to remove them 

 without disturbing the larvae. The larvae had not changed in 

 appearance, and were able to move their legs and antennae. 



" April 15th, the lice had not changed perceptibly. The scales 

 had become higher and more rounded. 



"April 1 6th, the lice had contracteJ considerably, being now 

 nearly circular, at least as broad as long ; in other respects there 

 was no apparent change. The scales were found to vary somewhat ; 

 those most advanced having the central portion covered with a loose 

 mass of curled white threads. 



. " April ] 7th, there was apparent no further change in the larva, 

 but the mass of threads covering the central part of the scale was 

 found in some specimens to have greatly increased in size, equalling 

 in height three or four times the width of the scale. This mass is 

 cottony in appearance, and in those specimens where it is largest is 

 more or less in the form of a plate twisted into a close spiral. 



*' April iQth, not much change was apparent in the larva, but the 

 mass of cottony excretion upon soma of the scales had increased 

 enormously ; so that in some cases it extended in a curve from the 

 scale to a point five times the width of the scale above the leaf and 

 down to the leaf. 



*' April 2oth, no important change was observed either in the 

 larvae or scales, 



" April 2 1st, it was observed that the larvae had become more or 

 less transparent, and marked with large irregular yellow spots near 

 the lateral margin of the head and thorax, and with a transverse 



