164 THE LEPIDOPTERA OF CEYLON. 



Female : forewing generally more uniformly darker cinereous-brown, and with 

 more or less defined transverse lines : laindwing as in male. Thorax, head, palpi, 

 and leo-s above, cinereous-brown ; abdomen cinereous. 



Expanse 2 to 2\ inches. 



Adult larva elongated, slender, half-looped ; with sixteen legs, the first pair of 

 middle legs aborted ; two dorsal red tubercles on twelfth segment ; colour bluish- 

 grey, numerously speckled with bluish-black ; a lateral and a sublateral yellowish 

 band, with an intervening bluish-grey line; spiracles and forelegs red; a dorsal 

 black stripe bordered by reddish-white spots between fifth and sixth segments ; head 

 black striped. Pupa formed within a leaf. 



"Feeds on castor oil plant, Biciims communis." (Thwaites.) 



ACH.a:A SERVA (Plate 169, Fig. 4, 4o, ^ q, 4i, larva). 



Noctua scrva, Fabricius, Syst. Ent. p. 593 (1775). 



Noctaa vulpina, Fabricius, Ent. Syst. iii. 2, p. 39 (1794). 



Noctua mercatoria, Fabricius, id. p. 62 (1794). 



Achaa mercatoria, Gueiiee, Noct. iii. p. 246 ; Walker, Catal. Lep. Het. B. M. xiv. p. 1396. 



Phal. Noctna melicerte, Cramer, Pap. Exot. iv. pi. 323, fig. D, e. 



Acha:a Ino, Hubner, Verz. bek. Schraett. p. 269 (1818-25). 



Male : forewing brownish-ochreous, washed with violaceous-grey in some 

 aspects; crossed by indistinct brown sinuous outwardly-oblique basal, antemedial, 

 and discal duplex lines, followed by a slight brown submarginal fascia; a black 

 punctiform orbicular spot, and ill-defined reniform mark; cilia ochreous-white : 

 hindwing dusky black, ochreous cinereous-brown at the base; with a transverse 

 medial greyish-white band, and three more or less defined quadrate marginal spots, 

 the anal spot being somewhat ochreous. 



Female : forewing crossed by distinct black-speckled lunular sinuous lines, and 

 an incomplete submarginal fascia ; orbicular spot and reniform mark : hindwing as in 

 male. Thorax, head, palpi, and legs above brownish-ochreous, abdomen ochreous 

 cinereous-brown. 



Expanse 2 to 2^ inches. 



Larva elongated, semi-looped : with sixteen legs, first middle pair aborted ; two 

 dorsal ochreous tubercules on twelfth segment. Colour varied pale and dark 

 violaceous and olivaceous-grey ; numerously covered with dark violet-brown speckles ; 

 spiracles black ; two violet-brown dorsal spots on fifth segment; head violet-brown 

 in front ; legs olive-grey. Pupa deep purple-brown. 



" Feeds on the castor oil plant, Bicinus communis." (Thtvaites.) 



