116 
MEMOIKS OF THE XATIOXAL ACADEMY OF SGIEXCES. 
Datana palmii Beiiteniiiuller. 
(PI. II, fig. 9, ; 10, 5,) 
Vatana paJmii Beut., Psyche, vi, p. 299, Jau., 1890. 
Smith, Ijist Lep. Bor. Amor., p. 30, 1891. 
Kirhy, Syu. Cat. Lep. Het., i, p. 613, 1872. 
var, Traus. Anier. Eiit. Soc., xxi, p. 198, 1894; Jonrn. K. Y. Ent. Soc., iv, p. 116, 1894. 
Larva. 
(PI. XIV, figs. 2,2«, 3, 3rt. 
Ent. Aiiier, vi, p. 181, 1890. 
Thoracic patch burut umber (R., Ilf, 8), shading into tawny olive on head and collar 
{ll., Ill, 17). Thorax and primaries of a pale whitish lilac color, between E., II, 13, and E., Ill, 
21, but paler than either, and shading into a brownish tone along the costa; wings rather thickly 
irrorated with mars brown (E., Ill, 13) scales, with line and fringe of the same color. Lines 1, 2, 
and 5, are distinct, the others faint. Discal dot obsolete, represented by faint shades. Secondaries 
glossy pinkish buff (E., Y, 14) more or less tinged with brown. Abdomen darker, especially toward 
the base. Below even paler than the secondaries above, shading into a brownish tint on primaries, 
the fringe on these wings being as dark as above. Exterior margin of prinmries only slightly 
scalloped. 
Expanse of wings, 40-50 mm. 
This form is probably not specifically distinct from D. floridana. The color of the pale scales 
is brighter and they are more numerous, whicli gives the wing a ligliter ai>pearance and brings 
■out the lines more promiuentlj^ In the larvm, that of J), palmii has the head and other red parts 
lighter than iu I), floridana^ being nearly a cherry-stone color in the former and mahogany -rod” 
ill the latter. The stripe may be a little narrower in 7>. pahtm^ though this is doubtful. (Dyar.) 
Egtj , — Laid in a patch of 75-80 on underside of the leaf. The egg differs from that of T). 
drexelii in being smaller, thin-shelled, somewhat like fine porcelain. Its diameter is nearly as 
great as its height. The tip is not depressed, being full, convex, forming a regular cap, which 
is clearly separated by a slight coustrictiou from the rest of the egg; most of this cap is eaten 
uway by the larva in liatchiug. Micropyle large, distinct, and dark, from the shell at this place 
being thin and transparent. Uuder half-inch objective, A eyepiece, the surface of the shell, 
including the cap, is seen to be ornamented with line polygonal areas. ■ 
Larva^ first stage . — Hoad black and sbiniug; width, 0.5 mm. Body browu, with four lateral and three ventral 
dull yellowish stripes wider than the intervening spaces. Cervical shield, anal plate, and feet black. The hairs 
arise from minute blackish warts. During this stage the larvae eat only the x>areuchyma of the leaf, and sit with the 
extremities of their bodies elevated like the other s])ccie.s of the genus. 
Second stage . — Head higher than wide, flat iu front, black (in a few examples, brownish), smooth, and shining; 
width, 0.9 mm. ; furnished with a few pale hairs. Body reddish brown, the stripes yellowish. Cervicalshield, anal 
plate, and feet shining black. During this and subsequent stages the larvae eat the whole leaf, remaining together 
upon one twig until it is defoliated. 
Third stage . — Head black to blackish red in different examples; eyes and mouth black; width, 1.6 mm. Body 
dark reddish browu, the stripes dull yellow, arranged as iu the next stage, the suhventral ones interrupted at the 
bases of the legs and correspondingly on the legless segments. Cervical shield, anal plate, thoracic and anal feet, 
and the abdominal feet outwardly black. A few short pale hairs. 
Fourth stage . — Head higher than wide, rounded, quite flat in front; depressed a little at the sutures at the 
top of the triangular plate and furnished with a few hairs; color black or blackish red to light mahogany -red, or 
even orange tinted iu diflfereut examples of the same brood; the eyes and jaws black, labium and anteume yellowish ; 
the latter black ringed. Body black, becoming brownish; four lateral stripes, a suhventral and ventral one pale 
yellow, the lateral ones becoming almost white iu some examples. All nearl 3 ' as wide as the intervening spaces. 
They run nearly to the anterior edge of joint 2, except the first anti second lateral, which stop at the cervical shield 
and end before reaching the anal plate, except the third lateral and the ventral. The suhventral lino is interrupted 
by the light reddish bases of the legs and by reddish spots on the legless segments, except on joint 13. Cervical 
shield, anal plates, thoracic feet, and the abdominal outwardly shiuing black; the anal plates punctured and 
narrowlj’ bordered with ochcr-.yellow. In some examples with red heads this border is broader, and the cervical 
shield is partly oclierous orange. Hair whitish, thin, and short, growing from iniimte black tubercles. 
Fifth stage . — Head as high as wide, rounded, a little flattened at the extreme front; depressed at the sutures 
.at the top of the triangular i>late, and very minutely punctured; a few blackish hairs; color light reddish orange 
