ASTTCUS. 151 



Lenyth, 5-7 mm. ; breadth, 2^-^^ mm. 



Ceylon : HaldamuUa {E. E. Oreen). 



Tijpe 5 iu the British Museum. 



This species exhibits the twofollowiug well-marked variations: — 



A. immunis var. bilineatus, uov. 



In this form the green scales on tlie suture and intervals 1, 3, 

 4 and 5 are much fewer and often absent, so that the green stripe 

 on interval 2 stands out very conspicuously. The four examples 

 I have seen are females. 



Ceylon {Dr, Tlmaites, Col. Yerhury). 



Tijpe 5 in the British Museum. 



A. immunis var. suturalis, Wall-. 



In this form there is is no green scaling at all. The prothorax 

 is black with a broad whitish lateral stripe. The elytra are black 

 with greyish-white scaling on intervals 1 and 2 and on the lateral 

 parts from stria 6 to the margin, intervals 3-5 having only a few 

 small spots of pale scaling, and the suture being black. 



Ceylon. 



Type 5 in the British Museum. 



Despite certain discrepancies, I have not much hesitation in 

 attributing the description of Arlunes destructor, Nietn. (I do not 

 know where the type u)ay be) to the typical form of this species. 

 Concerning this msect Mr. James Eose, as quoted by Nietner 

 {op. cit. p. 121), says : "The ravages which these insects commit 

 [on coffee plants] are really terrible .... Five or six acres have 

 been completely covered, and they have destroyed nearly all the 

 leaves. This year they have appeared in great number, where 

 they have covered at least 40 acres." Mr. E. E. Green informs 

 me that this species also defoliates young tea plants. 



113. Astyciis canus, sp. nov. 



Colour black, with fairly dense, uniform, shiny, greyish-wliite 

 scales ; a lateral stripe of denser scaling on the prothorax. 



Head with scattered punctures and sparse scaling, the forehead 

 smooth, shallowly impressed, and with a line central furrow ; eyes 

 short, oval and moderately convex, llostrum about as long as 

 broad, slightly narrowing from the base to the middle, then 

 widening again to the gense ; the broad and rather deep impres- 

 sion in the basal two-thirds contains the usual furrow, the single 

 lateral costa rather prominent and followed by a broad longitu- 

 dinal impression above the scrobe. Antennce yellowish red, the 

 funicle with joint 1 longer than 2, 3 a Uttle longer than 4, and 

 7 as long as broad, its apex oblique ( $ ). Proiliorax transverse, the 

 sides moderately rounded, broadest near the base, which is gently 

 rounded ; the upper surface a little uneven, but scarcely rugose, 



