no. i. BOMBYCINE MOTHS OF NORTH AMERICA— PACKARD. 75 



The median spine on the eighth abdominal segment is stouter than the others, wider, ending 

 hi four spikes, two on each side. All the tubercles are dark honey-yellow and similarly armed, 

 having besides the large terminal spikes; along the shaft numerous stout setiferous spinules. 



Suranal plate large, broad, the surface minutely granulated, with a few setiferous ones; 

 the edge thickened and posteriorly armed with numerous fine sharp setiferous spinules, while 

 the two large spinulated tubercles are as described for the last stage. Over the base of each 

 abdominal leg (1-4) is a small single spine. Anal legs subtriangular, surface sparsely pitted 

 and with setiferous granulations. 



The body is black above, mottled on the side with yellowish, the suranal plate and anal 

 legs honey-yellow; under side of the body pale. 



Length, 25 mm. 



The larva in this stage, most probably the one before the last, and more generalized than in 

 the last stage, is interesting as showing the equality in size and appearance of all the dorsal 

 spines, both thoracic and abdominal. The spines also are longer in proportion than in the 

 final stage of E. argiphontes. The more generalized nature of the young larva is paralleled by 

 what one knows of the larval history of the Saturniidae. Unfortunately we do not yet know 

 the larval history or earlier larval stages of any of the Protosphingina except the Citheroniinae ; 

 but the indications are that the armature of the first stage of Eudaemonia is quite utdike that 

 of this last-named subfamily, but that they are hatched with sjdnose tubercles on all the seg- 

 ments, as in the Hemileucidae and Saturniidae. 



[The larvae feed gregariously on Dialium guineense Willd. (Leguminosae).] 



Pupa. — <? . It does not differ, except in being a little smaller, from that of the other 

 species; the setae, however, are more numerous and finer, especially at the end of the abdomen; 

 the four tufts of fine bristles on the under side of the abdomen are shorter and smaller; length, 

 22 mm. 



The pupae [examined] of both species are of the same sex. 



EUDAEMONIA ARGIPHONTES W. F. Kirby. 



Plate XXXI, fig. 10; LXXIII, fig. 1, 2. 



[Eudaemonia argiphontes Kirby, Trans. Ent. Soc. Lond., 1877, p. 20.] 



Imago. — S . Antenna same length as in E. brachyura, with longer pectinations than in 

 E. brachyura, only distal pair present; 9 antenna with pectinations a little longer than those 

 in 9 brachyura. 



Palpi much shorter and stouter than in brachyura, third joint in 3 not so long as second 

 joint is wide, about one-half as wide. Third joint in 9 much longer than width of second, 

 nearly as long as in 9 brachyura. (Such a discrepancy in palpi of sexes never seen before.) 

 Body fawn-brown, uniform; fore wings lilac at base and along costa and costal end of 

 outer line; basal line dark, distinct, oblique, lilac externally; extradiscal line straight, not 

 sinuous, not recurved on costa (as in brachyura); four to seven clear spots in a row, including 

 the extradiscal one, and two small clear dots farther inward toward center of wing. (In 

 three males the two inner spots on fore wing wanting, well developed in 9 . ) 



Hind wing as in brachyura, but more scalloped, six clear spots in two rows; one dark brown 

 extradiscal line and traces of basal line; tails dark on edge, along middle deep scarlet. Beneath 

 tails and wings uniform fawn brown; 9 body and wings a little larger, antennas as in brachyura, 

 scarcely shorter, tads much shorter; five clear spots on hind wing; general color a little more 

 fawn, less dusky, both wings perhaps a little more scalloped, clear spots on fore wings larger 

 than in •$ . 



Expanse of fore wing, $ 62 mm.; 9 63 mm. 

 Length of fore whig, s 32 mm.; 9 33$ mm. 

 Breadth of fore wing, c? 18 mm.; 9 20 mm. 



Hind wings [<?], length 123, including tad, breadth 13 mm.; tad alone 103; breadth 

 of tad in middle 1$ mm.; 9 hind wing 86, tail 67, breadth 1£ mm. 



