ARACHNIDA. 545 



(2) Dusting with Flowers of Sulphur is the best remedy. By 

 suspending two bags on the end of a pole a cooly can dust two 

 rows of bushes at once. About 1 cwt. per acre is required. 



(3) Spraying with Flour Paste and Sulphur is indicated as mi 

 experiment in control. 



Observation. — Cotes (I.M.N., 01,48) states that Tetranychus biocu- 

 latus, W.-M., is the same species as the " Red Spider " of the Coffee- 

 tree, described as Acarus coffea by Nietner in his " Observations on 

 the Enemies of the Coffee-tree in Ceylon," published in 1861 - If 

 this statement is correct, the Red Spider should apparently be 

 known as Tetranychus coffea, Xietn- 



PHYTOPTUS CARINATUS, Green- 

 (PURPLE MITE.) 

 Typhlodromus carinatus, Green, Ins- Pests of Tea. 

 Phytoptus carinatus, Green, Perad. ("ire I, No. 17, pp. 199-200 ; 

 Anstead, Planters' Chron., VI. 189; Watt and Mann, Pests of Tea, 

 PP. 365-368, f. 42. 



FlG. 440. — Phytoptus carinatus, seen from side and from above. I 



within the circle shows the natural si/c. ('After < ,1 



Distribution. — Nilgiris. 



Lifehistory. — The Purple Mite feeds on both surfaces of the leaf, 

 giving it a more or less uniform purplish-bronzy tint, the leaves 

 withering and dropping in bail cases. The outer margins of the 

 leaves are often more attacked than the central portions- The mite 

 itself is microscopic and invisible to the naked eye. although close 

 inspection will often show very minute white specks which are the 

 1 skins of the mites. The young mites are greenish, semi- 

 transparent, pear-shaped. The adult mites are coloured dull 

 purple and have five ridges of white waxy material along the back ; 

 there art' apparently only two pairs of legs and these are small and 

 placed close together near the head ; at the tail-end there is a 

 sucker which acts as a prehensile organ and is used in locomotion. 

 [Green-] 



