2 14 JLecaniince. 



LEGANIUM BICRUCIATUM, sj). nov. 

 (Plate LXXVI.) 



Adult 9 {Jigs. I, 2), ochreous ; median area suffused with bright castaneous ; 

 margin narrowly brown. Form oval or subdeltoid ; anterior extremity usually 

 more or less acuminate. Flattish ; with a prominent median longitudinal and 

 two transverse carinEe ; the longitudinal ridge obsolescent posteriorly to the 

 second transverse ridge. Eyes black ; at some distance from margin. Derm 

 with small irregularly oval cells, not very sharply defined ; forming broken 

 transverse lines on the marginal zone, and collected into irregular circles and 

 rosettes on the median area {fig. 5). A well-defined clear space marking 

 position of the eyes, after treatment with potash. Stigmatic clefts with a dark 

 coloured chitinous rim {Jig. 6). Stigmatic spines three, stout, with rounded 

 extremities ; moderately long, but barely reaching the margin. Marginal hairs 

 {figs. 6, 7, 8) falcate, flattened at extremity ; varying in size in examples from 

 different plants ; those from Memecylon {Jig. 7) smaller and more slender ; 

 those from Eugenia {Jig. 8) stouter and strongly curved. No submarginal 

 tubercles. Scales of anal operculum, (yf^. 4) with base and outer edge ap- 

 pro.ximately equal, together forming a more or less continuous curve ; a minute 

 tubercle bearing a fine hair at e.xtremity. Antenna {fig. 3) six-jointed ; third 

 joint very long, usually with an imperfect division near its extremity ; formula 

 very constant : 3, (i, 6), 2, 4, 3. Anal ring with eight hairs, two of them con- 

 siderably smaller than the others. Length 3-50 to 475 mm. Breadth 2-50 

 to 3'so mm. 



Male puparium {fig. 9) transparent, glassy ; divided into eighteen plates; 

 the median area thickened and raised. Length 2 mm. Breadth i '25 mm. 



Adult 6 unknown. 



Habitat singly, on under-surface of leaves of Memecylon timbellafum. 

 Nothopegia colebrookta7ia, Elaagnus latifolia, Calopliyllum sp., and Eugenia 

 sp. Peradeniya, Pundaluoya, Watawella, Nuwera Eliya. Widely distri- 

 buted, but comparatively rare in any locality. 



The peculiar form of the marginal hairs distinguishes this species from any 

 other known to me. 



Very closely allied to pipe?-is, from which it differs only in number of 

 antennal joints and form of marginal hairs. 



It is possible that intermediate forms, showing gradual subdivision of the 

 long third joint of antenna, with a simplification of the marginal hairs, may occur. 



