276 MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



Cerura scitiscripta Walker. 



(PI. VI,figs.21-23: I'l. VII, fig.31; XLIX,fiK.3.) 



Centra scitiscripta Walker, Cat. Lep. Brit. Mus., xxxii, p. 408, 186.5. 



Cerura maltiacripta Riley, Trans. St. Louis Acail. kSci., iii, p. 241, 187.5 (tigure in text rt-iirodiuiMl on PI. 



XLIX.tig. 3). 

 Centra Candida Lintn., Ent. Contr., iv, p. 87 (30th Rep. N. Y. State Mus., p. 199), " 1877." .Tuno, 1878. 

 Cerura scitiscripta Grole, New Clieck List N. Amer. Moths, p. 20, 1882. 

 Centra itittlliscripta Grote, New Check List N. Amer. Moths, p. 20, 1882. 

 Cerura sciliscripta Smith, List Lep. lior. Amer., p. 31, 1891. 

 Cerura miiltiscriiita Smith, Li.st Lep. Hor. .\nier., p. 31, 1891. 

 Centra scitiscripta Kirby. Syn. Cat. Lep. Het., i, p. .588, 1892. 

 Cerura multiscripta Kirljy, Syn. Cat. Lep. Het., i, p. 588, 1892. 

 Cerura scitiscripta Oyar. Can. Kut., xxiii, p. 87, April, 1891. 



Neuni. and Dyar, Trans. Amer. Ent. Soc, xxi, p. 189, 1894, Journ. N. Y. Eut. Soc, ii, p. 114, 

 1894. 



Larva. 



(PI. XXXVI. figs. .">,5n, 6, 7, C. multiscripta.) 



Tepper, BulL Brooklyn Ent. Soc, i, p. 4, May, 1S78. 



Dijar, Psyche, v, p. 393, Oct., 1800. (Egg and larva in all stages.) 



miey. Trans. St. Louis Acad. Sci., iii. p. 241, 1875. (Egg described ; larva confounded with that of bnrcalis.) 



While multiscripta is generally regarded as distinct from scitincriptd, I think that if Professor 

 Riley had had examples of scitiscripttt before him he would have hesitated about describing the 

 melauotiu specimens, as I believe them to be, under a different name. 



C. Candida only appears to differ from scitixcripia in tiie thorax being white and in having no 

 dots on the hind wings (two S collected in Florida by Mrs. Slossou). 



Moth.— Vive $ . Head white above; sides, below, and breast black. Thorax: collar white, 

 edged with black beliind, and two rows of spots more or less connected (in var. caiidida, 

 according to Lintner, the thorax is entirely white). 



Fore wings without the usual broad median black band; snow-white, crossed by four 

 scalloped, more or less ]>erfect, lines within, and by four scalloped lines without the ring-like discal 

 mark. The outer mark or submarginal line heavier on the costal and inner edge. Second and 

 third lines forming a more or less perfect series of ringlets and sometimes {multiscripta) filled in 

 with scattered fine black scales, giving the band thus formed a du.sky hue. Fringe white, with 

 more or less intravenular dots. 



Hind wings varying from white to uniformly dusky or smoky, with distinct heavy black dots 

 (one from Florida is without any dots, this being var. candida Lintner). Underside snow-white, 

 with heavy black costal .spots, the outer one f.)rming a submarginal line extending to the median 

 vein, both wings dark smoky with the darker diffuse lines on each wing, and a diftuse discal mark. 



Expanse of wings, ,J 28-35 mm.: length of body, 3 13-19 mm. I add Riley's description of 

 his U. multiscripta. 



" Color white, with brown-black and black markings. Primaries white, slightly silvery, crossed 

 M-ith eight irregularly undulate and angulate narrow black lines, as foUows: 1, basal, obsolete on 

 costal and inner borders and preceded by a black spot close to thorax; 2, reaching to both borders, 

 but broken; 3, 4, and 5, ])r()ximate, and irregularly undulating almost straight across the basal 

 fourth of wing, 3 and 4 thickened and conllueut toward costa and generally forming a circular 

 sjiot between subcostal and cubital veins; G, 7, and S, oblitiuing more toward apex, lunulate and 

 more widely separated between veins 2, 3, and 4, more approximate and retreating toward base 

 between veins 1 and 2 and 4 and 6, and generally so close along vein 2 as to coalesce; broader, 

 more intense, irregular marks occupy the spaces toward apex and anal angle, left by the letreating 

 (if line S. thus leaving a regularly defined terminal space. Veins more or less dusted with black 

 and c()ns])icuously marked in terminal s|)ace. A distinct row of terminal sjjots between the veins. 

 The median space between lines 5 and (i is about as wide as tlie terminal, and has a small discal 



