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MEMOIRS OF THE l!fATIONAL ACADEMY OF SCIENCES. 



ventral greenish yi'llow line. Tlioracic leg's black, greeui.sh at the base: abdominal legs black on 

 the outside, but greenish yellow at base within and on the plauta\ The body is dusted (|uite 

 densely with long and abundant pale whitish gray hairs, those of the thoracic and eighth and 

 ninth abdominal segments much longer than the others; the short dorsal hairs on the second and 

 third thoracic and fourth to eighth abdominal segments forming tofts meeting over the middle 

 of the back, while the lateral hairs are grouped in tufts which are directed downward. 



Piqja. — The following description is tliat of the pui)a of the Olympia, Wasli., larva, 9 : 

 Head a little less jirominent than in pupa of I), aiiguxil, not distinctly notched, and the ridges 

 much less distinct. Body elongated, not very plump, suddenly pointed at the end. and bearing 

 a large, broad cremaster ending in four spines, the two inner ones the longer, and with a small 

 lateral spine at base. Surface of the body and abdomen coarsely punctured. Length, l-'O mm. 



Datana aiigusii liiote aud Kobiusou. 

 (PL II, lig. 1, rf ; fig. 2, 9.) 

 Datana uiKjusii Grote and Rob., Proc. Ent. Soc. Pbil., vi, ji. 9, 1866, ]il. 2, fig. 1. 

 Grote, New Cbeck List N. Amer. Moths, ji. 18. 1882. 

 Smith, List Lep. Bor. Amer., p. 30, 1891. 

 Kirby, Syn. Cat. Lep. Het. Br. Mus., i, p. 613, 1892. 



Neum. aud Dyar, Traus. .^mer. Ent. Soo., xsi, p. 197, 1894; Jouru. X. Y. Ent., 8oc. ii, p. 116, 

 Sept., 1894. 



Larva. 

 (PL X, fig. 2.) 

 Grote attd Ilohinsoii, Proc. Ent. Soc. Phil., vi. p. 10, 1866. (Last larval stage.) 

 Beiiti'iimiiUer, Can. Ent., x.x, p. 135, 1888. (Last larval stage.) 



2Ioth. — Exterior margin of fore wings excavated between the veins in both sexes. General 

 color above and below smoky brown (mars brown, Itidgway's Xomeuclature of Colors, PI. HI, fig. 

 13), but paler, shading into burnt umber (Ridg., Ill, 8) along costal edge of fore wings. The dark 



([uadvate patch which covers the head and the anterior part of 

 the thorax is burnt umber, shading darker posteriori}'. Fore 

 wings sparsely irrorate, with brown-black scales, crossed by 

 five transverse lines which, with the apical streak, discal dots, 

 and fringe, are concolorous. The lines have the same arrange- 

 ment as iu all the species of the genus aud are not quite con- 

 stant in their course. The first one crosses the wing at the 

 basal third and is greatly arcuate; second at about the middle, 

 passing outside of the rouuded obscure inner discal dot iiud 

 either inside or through the outer elongate, sublinear discal 

 dot situated on discal cross vein; third line intermediate 

 between second and fifth; fourth contiguous to fifth, which is at the outer third of wing; the 

 fourth line is narrower than the other, and often obscure. All these lines, except first and fifth, 

 are obscure on the costal edge. Apical streak short from just 

 below apex or outer margin, and runs inward and downward, 

 ending at about vein i. Anterior to the streak, aud between 

 the median vein and costa, the wing is of a brighter tint, con- 

 structing the costal shade seen in all the species. Hind wings 

 and abdomen evenly concolorous, mars bi'own, the abdomen 

 darker at tip. Below uniformly paler than hind wings above; 

 the body parts a shade darker. Primaries shading darker 

 toward the apices; the fringe brown black, as above. 

 Expanse of "wings, 46-53 mm. 



This species is marked exactly likeZ). ministra aud I), califor- 

 nica, but differs in the dark smoky-brown color throughout. From 

 J), intcgerrima, with which it is often confounded, it diflers in the scalloped outer margin of the fore 

 wings, the dark hind, wings, nearly concolorous with the primaries, and in the comparative scarcity 

 of irroration on the primaries and the absence of pale shades bordering the transverse lines 

 (Dyar). 



Pig. 5t). — Pupa of Datana anynsii. 

 dorsal view. 



Head. 



Pupa of Datana ajujusii. Eud 



