— 170 — 



I itjral strip?. Legs and whole of tlie iiiiderside yellowish, mottled with red. Spiracles 

 yellow, edged with red. 



Length 34 mm. 

 From a small linxHl raised on Oak by jNIiss E. Meirton of New Wind- 

 .sor, N. 'Y. I regret lliat it was not in my power to observe the stages 

 bej'ond those described, but I believe INIiss INIorton was so fortunate as to 

 raise the larva to perfection. 



Datana perspicua, (j. & R. Eg^ and larval stages. 



Ei>g. — Xi\A\ white, laid in small, compact irregular masses, united side by side. 

 They are ovate, and when the larva emerges it does so by a large circular opening, 

 eaten away by the larva, and occupying 1 o' the shell. 



}''i?;wo' /rtri'rt. — After exclusion from the egg. Head and anal segment black 

 shining. 2nd segment also jet-black, rather raised centrally, shining in the centre of 

 the dorsum only. Ground color dull yellowish, with two stripes dull red, the dorsal 

 stripe double the width of the others. The lateral stripes are 3 iu number on each 

 side, tho;e in tlie centre being ih^ widest. The extreme lateral stripe immediately 

 above the .'piracies is slightly wavcil in its outline. Thoracic feet black, abdominal 

 legs reddish i)rown. 



Length. 4 days after exclusion, 9 mm. 



After 1st motil-t. — The colors are now a little brighter. The black of the 2nd 

 segment is reduced by the widening of the lateral stripes as is also that of the anal 

 segment. The 12th segment has a small brovv'n shining tuliercle in the centre. 



Length, (9 day.s), 18 mm. 



After 2nd }>toiilt.-\le:i.A lai-Kdick 2nd segment brown-black in centre. The 

 stripes are dull yellow, the spaces between being reddish brown, that on the dorsum 

 much the wide.-^t. Spiracles jet-black. Underside brownish orange, base of all the 

 legs v;ith a reddish tinge. Legs, feet, anal segment, all jet-black, shining. 



Length 26 mm. 



.•^/?tr j/-</ww^//. —Head jet-black. 2nd segment chestnut brown, shading into 

 blackish brown in the central region. The stripes are now all broad, and very bright 

 sulphur yellow, giving the insect a brilliant appearance. Ventral stripe also very 

 broad. Base of feet and legs bright orange, their tips jet-black. 



Between this and the mature larva the stages were not observed. 



Mature larva. Head bright wine-red, shining, rather coarsely punctured. Upper 

 mandibles pitchy black, lower M'ine-red. The 2nd segment is also red in the centre, 

 the yellow lines faintly shown on the red ground color. The body is a deep chestnut 

 red, varying in some individuals to a darker shade, almost black, or at least pitchy. 

 The longitudinal lines are il in number, and are almost all of equal width. They are 

 arranged 3 on each side subdorsally, 2 laterally and i ventrally. The spaces between 

 them are widest on the dorsum and on the lateral region enclosing the spn-acles, 

 which are black. The color of these longitudinal lines is vivid lemon yellow, darker 

 and brighter than in any other species, and the larva has a very gay and attractive ap- 

 pearance. In some examples the subdorsal yellow stripes are almost confluent. The 

 stripes are thinly covered with red irrorations, from the base of which spring sordid 

 white hairs. The feet and legs are reddish at their base, the extremities being pitchy 

 black. 



Length 60 nun. 



P'ood plant, Stag-horn Sumach. (Rhus typhina L. ) 



