DYSGONIIDyE. 163 



a greyisli-wliite sublateral line bordered above by several piukish-grey spots ; liead 

 yellowish, speckled with black ; legs olivaceous. Pupa pinkish-black. 

 "Feeds on Citrus decumanus." {Tlmailes.) 



Genus ACH^A. 

 Achaa, Hiibner, Verz. bek. Scbmett. p. 269 (1818-2o) ; Gueii. Noct. iii. p. 244 ; Walker, CaUil. Lep. 

 Het. B. M. xiv. p. 1389. 



Wings broad : forewing triangular, apex acute, exterior margin oblique, almost 

 even ; cell extending half the length ; first subcostal emitted at one-third before end 

 of the cell, second at one-half, trifid, third at one-sixth from base of second, and 

 fourth at two-thirds from base of third, fifth from end of the cell and slightly 

 touching third near its base ; discocellular concave, radials from close to upper and 

 lower end ; middle median from angle close to end of the cell, lower at nearly one- 

 half ; submedian recurved : hindwing short, apex convex, exterior margin convexly 

 angular ; cell extending one-third the length ; two subcostals from end of the cell ; 

 discocellular outwardly-oblique, concave, radial from near lower end ; two upper 

 medians from extended end of the cell, lower at one-fifth ; submedian and internal 

 vein straight. Body stout ; palpi moderately slender, ascending, squamose ; second 

 joint reaching level of the eyes, third joint lanceolate, one-third length of the second ; 

 antennas simple ; legs stout, pilose, hind tarsi pilose at the base, middle tibijB with 

 lateral spines, spurs long. 



Type^ A. Melicerte. 



ACH^A MELICERTE (Plate 168, Fig. 2, 2a, $ ? , 2h, larva). 



Phalcena Nocttia Melicerte, Drury, Ins. i. p. 46, pi. 23, fig. I (1770) ; Cramer, Pap. Exot. i. pi. 62, 



fig. C, D ; iv. pi. 323, fig. c. 

 Acltcca Melicerta, Hiibner, Verz. bek. Scbmett. p. 269 ; Gueuee, Noct. iii. p. 247 ; Walker, Catal. Lep. 



Het. B. M. xiv. p. 1396. 

 Noctxia tigrina, Fabricius, Spec. Ins. p. 218 (1781); Eut. Syst. iii. 2, p. 40. 



Male : forewing cinereous-brown, washed with violaceous-grey in some lights ; 

 sparsely speckled with darker brown scales ; crossed by a more or less defined pale 

 cinereous-bordered black basal costal line, an outwardly-oblique antemedial line, and 

 two discal curved wavy lines, the inner one being indistinct, followed by a submargiuai 

 darker brown fascia traversed by a pale sinuous line, the inner portion of the fascia 

 being somewhat suffused with ferruginous-brown, and ending on the costa in a paler 

 subapical patch ; reniform mark defined by an upper and lower black dot ; in some 

 specimens the area between the medial and inner discal line is lilacine white, and the 

 latter colour also sometimes pervades the outer margiu : hindwing dusky black, 

 cinereous towards the base ; with a greyish-white transverse medial band and three 

 quadrate marginal spots. 



Y 2 



