no. i. BOMBYCINE MOTHS OF NORTH AMERICA— PACKARD. 231 



wide. The four dorsal second and third thoracic tubercles, together with the single median one on 

 the eighth abdominal segment, are all of the same size seen sideways, but the last-named tubercle 

 seen from in front or behind is thicker, owing to its double origin. The two dorsal ones on 

 the ninth abdominal segment are rather high, being long, conical, but no higher than the median 

 single one on the eighth segment. All the legs are yellowish; each of the middle abdominal 

 legs with a black dot in the middle of the outer side. 



Prof. Riley has briefly described and in part figured in his Fourth Missouri Report (p. 121) 

 the five stages of this larva, and my material confirms his description. Mr. Dyar, however, 

 claims that from his observations there are but four stages. For the colors, since we have not 

 yet seen the living larva, we must quote from Rile} 7 , who states that in the fifth stage "the 

 appearance is totally changed; the body is of a most delicate bluish white, with a faint prui- 

 nescence." Further on he says: "As this worm acquires its full growth, the pruinescence 

 mentioned above disappears, and it acquires a more greenish cast, except around the base of 

 the tubercles, where there is a more decided blue annulation. " In Psyche for June, 1891, 

 M. Beutenmuller gives a detailed description of six stages, Jive molts. His fifth and sixth stages 

 appear to be the same as our fifth. 



[Food plants. — Tulip tree (Pergande); sassafras (C. V. Riley). Dr. C. V. Riley's notes 

 include the following: "C. S. Minot says that it feeds on barberry, birch, cherry, maple, sassa- 

 fras, azalea, and even arbor- vitae at a pinch; and that is preyed upon by an Ophion, an Ich- 

 neumon, and a Tachina. "] 



CALLOSAMIA ANGUXIFERA (Walker). 

 Plate XIII, figa. 4-6; XIV, figs. 1-5; XLIX, fig. 2; LXIX, fig. 2. 

 [Samia angulifera Walker, Cat. Lep. Het. Brit. Mus., V (1855), p. 1224.] 



Moth. — Male. Antennae usually with the paler distal pectinations decidedly shorter 

 than the dark or basal ones. 



Body and base of the wings more ochreous than in 9 promethea. Basal line as in C. pro- 

 methea. Extradiscal line more ragged, irregular and more deeply incurved between the costa 

 and vein II 3 , the sinus in second median cell deeper than in G. promethea. Wing beyond as 

 in C. promethea, but rather deeper ochreous in one and dusky brown in two others. Discal 

 spot very large, trigonate, oblique, T-shaped, the outer arm of the T in one male not so well 

 developed as in 9 , not reaching the extradiscal line; it extends from vein II to median. In 

 all the males this spot is not so wide and heavy as in females. Subapical ocellus as in C. prome 

 thea 9 , as is the white apical fine, and also the marginal line. 



Hind wings above much as in C. promethea, but either more ochreous or rich chestnut 

 brown within the extradiscal line; the scallops of this line nearly the same, but the line tends 

 to end nearer the hind angle of the wing, especially beneath. The marginal series of spots 

 ochreous. The outer edge of the broad ochreous shade beyond the extradiscal line in both 

 wings ends in more decided, sharper triangular scallops on the veins than in the female of 0. 

 promethea. Discal spots large, expanding each way on the median vein, and reaching vein 

 Hij the outer point not reaching to the extradiscal fine. Beneath the tints are decidedly more 

 ochreous than in the 9 promethea; the base of the hind wings is not dark chestnut, but in one 

 S is deep ochreous. Extradiscal line whitish, beyond washed with pink. 



Expanse of fore wings, <? 87-105 mm.; length of fore wings, 46-54 mm. 



Two males from Providence, R. I. (Clark collection), are quite dark, one being more so 

 than the other. One approaches, within the extradiscal line of both wings, the dark hue of 

 promethea c? , and the wing beyond the extradiscal is dark brown, with the outer pointed scal- 

 lops very distinct; the spots of the submarginal series are present in all the cells, but in the 

 three hindermost cells the spots are divided into separate round or oval or pyriform spots. 

 The discal spots in the hind wings of one S are nearly obsolete, only the ends being present; 

 in the other $ the spot is present, though not so large as in the 9 of the same species. 



