202 [September, 



characters of depressum are indistinguishable from those of niyriim, (of 

 Nietner), I think that the present form deserves varietal rank. In 

 colour it ranges from castaneous to chocolate-brown, with a dull sur- 

 face — often flecked with white secretion. In form it is oval, slightly 

 narrowed in front, and moderately convex. A slight medio-longitudinal 

 carina can usually be distinguished. Typical nif/nim, on the other 

 hand, is very strongly' convex, of a deep black colour, with a smooth 

 and shining surface. 



Leeanium persicae crudum, n. subsp. 



In an earlier paper in this Magazine (Feb. 1916) I mentioned tlie 

 receipt of an unusually flattened form of L. persicae, affecting the foliage 

 of Aralia. Mr. Scott subsequently sent me fresh living material of this 

 same form, from the same plant. The early adult females exhibit the 

 characteristic black bands described by Newstead for typical persicae. 

 Older females are of a pale jnitty-colour, thinly spi'inkled with white 

 ])owdery secretion. The colour darkens, with age, to castaneous brown ; 

 but the scale remains depressed and never becomes so hard and dense as 

 in the type. The females commence ovipositing quite early, while still 

 in a soft pale condition, and the ova are white instead of pinkish. 

 1 have been miable to find any structural differences between this 

 form and the type ; but it will be convenient to distinguish it, as a 

 suljspecies, by the name crudain, signifying its " vinderdone " or " half- 

 baked " appearance. 



Leeanium Jiesperidiim L., var. 



Dr. Imms has submitted specimens of a Leeanium which is 

 " nourishing on an orange plant reared from seed in the' botanical 

 laboratory here (Manchester)." The insect is of a clear castaneous 

 colour, slightly mottled with darker brown. It occurs on the under- 

 surface of the foliage. A microscopical examination shows characters 

 identical Avith those of L. hesperidwm, to which species I must attach 

 it, although it differs from the ordinary forms in its coloration — more 

 particularly in the absence of the usual dark patch on the venter. 



Leeanium si(jniferum Green. 



On Poll/podium aiireiim ; in one of the plant-houses at the Eoyal 

 Botanic Gardens, Kew ; Dec. 1916. 



This species has hitherto been recorded from Ceylon and India 

 only. It is possible that it may be — as suggested by Sanders — a 



