304 THE LEPIBOPTERA OF CEYLON. 



jioints brown ; some brown points along the costa : bindwing rosy towards tbe outer 

 border ; crossed by indistinct wavy reddish lines ; some semihyaline submarginal 

 spots towards the apex. 



Expanse t^i inch. 



NIACCABA BISECTALIS (Plate 179, Fig. 12). 

 Catacli/sta bisectalis, Walker, Catal. Lep. Het. B. M. xvii. p. 449 (1859). 



White. Forewing crossed by an inwardly-oblique blackish medial band, a 

 slender recurved antemedial brown-speckled line, and a less defined postmedial 

 denticulated line ; a black dot in middle of the cell, and a reniform mark at the end ; 

 a subbasal cluster of purplish-red scales, and a darker cluster at the posterior angle ; 

 a few similar red scales also scattered over the medial and discal area ; a marginal 

 row of black dots : hiudwing with an interrupted blackish-speckled bordered reddish 

 medial baud, which encloses a white dentate mark at end of the cell, followed by a 

 broad purplish-red marginal band, the latter having a cluster of black scales at the 

 apex and anal angle. Cilia alternated with purplish-red. Body slightly black 

 speckled. 



Expanse xa inch. 



NIACCABA DELETA (Plate 179, Fig. 13). 



Wliite. Forewing with faint traces of a pale brownish curved antemedial line, 

 an angular postmedial fascia and marginal band ; a minute black dot at base of the 

 wing, and a small spot at end of the cell : hiudwing with faint traces of a brownish 

 medial and a discal line, followed by a broad black- speckled marginal band ; two 

 black spots at end of the cell. Cilia pale brownish; forelegs brownish. 



Expanse -rcr inch. 



Genus NYMPHULA. n^^ f \.t^,,i.jJl 



Nymplmla, Schrank, Fauna Boica, ii. 2, p. 162 (1802); Hiibuer, Verz. bek. Sclimett. p. 362 



(1825-7); Treitsclike, Schmett. Eur. vi. p. 315 (1829). 

 Botijs » (part), Latreille, Hist. N.at. Gen. Crust, et Ins. iii. p. 414 (1802) ;.2d xiv. p. 230 (1805). 

 Hydrocampa, Latieille, Faun. Nat. Eeg. Anim. p. 478 (1825) ; Duponchel, Lep. Fr. viii. p. 172 



(1831) ; Stephens, 111. Haust. iv. p. 38 (1834) ; Guenee, Delt. et Pyr. p. 273 ; Walker, Catal. 



Lep. Het. B. M. xvii. p. 456; Lederer, Pyr. Wien. Ent. Mon. vii. p. 451 (1863). 

 Nausinoe (part), Hiibner, Verz. bek. Schmett. p. 363 (1825-7). 



Male. Forewing elongated, narrow; apex rounded, exterior margin oblique, 



_^_ . . • , ■ o 



* Latreille, in his " Hist. Nat.," vol. iii. p. 414 (1802), enumerates erigatus, colonum, purpuraria, 

 and potamogata as the species pertaining to his genus Botys. In the xiv. vol. of the same work, 

 p. 230 (1805), he restricts the genus to inwpuraria and ^otomof^ato, and in his " Consid. Gen.," p. 369 (1810), 

 lie cites the two latter species only. Saraouelle, in his " Ent. Useful Comp.," p. 255 (1819), specifies ••« ^lAn 

 jjurpuraria as the typical species. This species {purpuraria), consequently, becomes thus fixed as the , rf/ i^a"' »^ 

 type of Latreille's Botys. The genus therefore is removed to the Geometrid«. ^''A\(^ .'■ 



