1865.] m 



D. mimstra or D. contractor neither of which .species are possibly to 

 be confounded with Datana perspwua nobis. 



It is to be further remarked thstt Drury's original and extremely in- 

 different figure, represents a small individual with pale hind wings and 

 apparently excavate external margin of fore-wings, the absence of which 

 latter character in the specimens we regard as D. contractu Walk., as 

 well as D. pcrsptcua nobis, we incline to regard as of specific value. 



For instances of probable confusion resulting from unacquaintance 

 with any second species of Datana, see the remarks of Mr. Walsh, p. 

 296, huj. scrip. 1862, etc. 



AGBOTIS, Treitschke. 

 Agrotis quadridentata, n. sp. (Plate 3, fig. 2, % , fig. 3, $.) 



Size small. Dull obscure olivaceous blackish ; c ;sta with a yellow- 

 ish white stripe, broader and more distinct at base, running to apical 

 third of the wing ; nervules bordered with yellowish white especially 

 the second and third median ; median nervure covered with whitish 

 scales throughout its .entire length. Transverse anterior line black, 

 bi-undate, obsolete superiorly; median space wide; orbicular and reni- 

 form spots distinct, yellowish white, of the normal shape; in tne inter- 

 space below the fourth median nervule is an oblique yellowish dash. 

 Transverse posterior line black, interrupted, forming small cuneiform 

 marks between the veins ; subterminal space obscure yellowish ; sub- 

 terminal line consisting of pale points, which develop themselves into 

 a continuous pale line in the 9 , preceded in both sexes by a black 

 shade forming cuneiform spots between the veins. Terminal space 

 concolorous with median; subapically, and again at the middle of the 

 terminal space, the pale color of the subterminal space spreads in 

 parallel stripes bordering the nervules to the terminal margin ; fringes 

 pale. 



Posterior wings whitish, with an undecided terminal dark shade 

 which widens towards the costal angle ; in the female, two ill-defined 

 dark discontinued bands ; fringes white. 



Under surface whitish, without markings except a narrow regularly 

 undulate terminal line on both pair ; in the male the anterior win°-s 

 are more or less pale-blackish, nervules covered with whitish scales. 



Antenna; pectinate in the male, — simple in the female. Tegulre pale, 

 with an interior dark line ; hairs on the disk darker than those on the 

 tegulje. ''Collar" with a median dark line, below which it is testa- 

 ceous in the male, paler in the female; superiorly the -'collar" is 

 brownish, with terminal pale hairs. Abdomen whitish, with a testa- 

 ceous tinge; beneath, the thoracic region, palpi and legs show some 



