116 MEMOIRS OK TUE NATIONAL ACADEMY OF SCIENCES. 



Datana palmii Iteiitenniiiller. 

 (PI. II, fig. 9, S; 10, 9.) 



Datana palmii Beut., I'.sycbe, vi, p. 299, .lau., 1890. 



Smith, List Lep. lior. Aiiier., p. HO, 1S91. 

 Kiiliy, .\vii. Cat. Lep. Hot., i, p. G1.3, 1872. 

 v.-ir, Trails. Ainer. Eut. Soc, xxi, p. 198, 1894: .louru. N. Y. Ent. Soc, iv. p. 116, 1894. 



Larva. 



(Pl.XIV, fjf;s.2.2((, S, 3n. 

 Dya); Eut. Amer, vi. p. 181, 1890. 



2[oth. — Tlioraek; patch burnt umber (R., Ill, 8), sliadinj; into tawny olive on liead and collar 

 (R., Ill, 17). Thorax and primaries of a pale whitish liiae color, between It., II. 1.'!, and R.. Ill, 

 21, but paler than either, and shading into a brownish tone along the eo.sta; wings rather thickly 

 irrorated with mars brown (R., Ill, 13) .scales, witii line and fringe of the .same color. Lines 1, L', 

 and 5, are distinct, the others faint. Di.seal dot obsolete, rei)re.sented by faint .shades. .Sfpondaries 

 glossy ))inkish buff (R., V, 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 primaries only slightly 

 scalloped. 



Expanse of wings, 40-50 mm. 



This form is probably not specifically distinct from J). Jioridnna. The color of the pale scales 

 is brighter and they are more numerous, which gives the wing a lighter appearance and brings 

 out the lines more prominently. In the larvse, that of ]>. palmii has the head and other red parts 

 Jighter than in 1). Jinridana, being nearly a cherry-stone color in the former and ''mahogany-red'' 

 in the latter. The stripe may be a little narrower in I), jxdmii, though this is doubtful. (Dyar.) 



jj]gil, — Laid in a patch of 7."i-S0 on underside of the leaf. The egg differs from that of 7>. 

 ■drexeUi in being smaller, thin-shelled, somewhat like tine porcelain. Its diameter is nciirly as 

 .great as its height. The tip is not depressed, being full, convex, forming a regular cap, Avhich 

 .is clearly .separated by a slight constriction from the rest of the egg; most of this cap is eaten 

 .awa,y by the larva in hatching. Micropyle large, distinct, and dark, from the shell at this place 

 being thin and transparent. Under half-inch objective, A eyepiece, the surface of the shell, 

 including the cai), is seen to be ornamented with fine polygonal areas. 



Larva, first slagi-.—Uend black anil sliiniug; widtb, 0.5 mm. Boilv brown, with four lateral ami three, ventral 

 (lull yellowish stripes wider than the intervening spaces. Cervical shield, aual plate, and feet black. The hairs 

 arise from minute blacki.sh warts. During this stage the larva- eat only the parenchyma of the leal', and sit with the 

 extremities of their bodies elevated like the other siiecies of the genus. 



Second s(a.7c.— Head higher than wide, tlat in front, black (in a few exam]>ies. brownish), .smooth, and shinnig; 

 •width, 0.9 mm. ; furnished with a few jial.' hairs. Body reddish lirown, the stripes yellowish. Cervical shield, anal 

 plate, and feet shining black. During this and subseiiiieiit stages the larva- eat tlic whole leaf, remaining together 

 upon one twig nntil it is defoliated. 



Third utai/e.—lleMl black to blackish red in different examples; eyes and mouth black; width, 1.6 mm. Body 

 dark reddish brown, the stripes dull yellow, arranged as in the next stage, the snbventral ones interrupted at the 

 biises 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.— Haul higher than wide, roundeil, (juite tiat in front; depressed a little at the sutures at the 

 top of the triangular plate and niriushed with a few hairs; color black or blackish red to light nialiogany-re<l, or 

 even orange tinted m dilierent examiiles of the same brood ; the eyes aud.jaws black, labium and anteuiKi- yellowish ; 

 the latter black ringed. Body Idack, becoming browni.sh; four lateral striiies, a snbventral and ventral one pale 

 yellow, the lateral ones becoming almost white in some examjjles. All nearly as wide as the intervening spaces. 

 Tiiey run nearly to the anterior edge of .joint 2. except the first and second lateral, which stop at the cervical shield 

 and end before reaching the anal plate, except the third lateral and the ventral. The snbventral lino is interrujited 

 by the light reddish bases of the logs and by reiUlish spots on the legless segments, except on joint KH. Cervical 

 shield, anal plates, thor.acic feet, and the abdominal outwardly shining black; the anal plates imnctured and 

 narrowly bordered with ocher-yellow. In some examples with red heads this border is broader, and the cervical 

 shield is partly ocherous orange. Hair whitish, thin, and short, growing from minute black tubercles. 



Fifth stage.— He:u\ as high as wide, rounded, a little llattened at the extreme front; depressed at the sutures 

 at the top of the triangular plate, and very minutely puiiCtured: a few blackish hairs; color light reddish orange 



