no. i. BOMBYCINE MOTHS OF NORTH AMERICA— PACKARD. 61 



abdominal segments, except the slight median tubercle on the eighth abdominal segment, but 

 on the second abdominal segment in place of the dorsal tubercles is a large conspicuous oblique 

 silvery pearly spot 3 \ mm. in length and between \ and $ as wide as long, the only mark the larva 

 in this stage hears. 



The median tubercle on the eighth abdominal segment is a low dark reddish spot, not a 

 tubercle, and with no signs of its double origin, and situated on a low flattened rounded eminence. 

 It is there seen to be more extremely modified than that of L. phaedusa, which in the last stage 

 still retains indications of its double origin. 



No traces of supraspiracular tubercles over the whole body. No fine or coarse setae or 

 hairs; no white fungoid warts anywhere on the segments above or beneath. 



Suranal plate distinctly triangular, larger than in the previous stage, the end subacute, 

 but not submucronate ; the surface rough and the edge thickened, with somewhat crowded 

 granulations — i. e., fine conical warts or tuberculets — which are not, however, setiferous; com- 

 pared with L. phaedusa the tubercles on the suranal plate are much smaller. 



Under side of the edge ivory white. Anal legs entirely green, the middle abdominal legs 

 dark green, thoracic legs very short, rather small and yellowish green. Spiracles brownish. 

 Lateral or plural line full, swollen, the edge whitish and connected with the white line on the 

 prothoracic segment. 



This larva, hi its final stage, in the armature shows some resemblance to Gynanisa, but has 

 undergone great reduction in the tubercles, seta?, and the silvery white marks. It is more 

 extremely modified or specialized than the larva of L. phaedusa, in which the setae are still 

 present, though stout and minute. It has retained a single pair of the conspicuous silvery 

 white spots, which appears to be wanting in the single preserved (alcoholic) larva of L. phaedusa, 

 while all trace of the double origin of the median tubercle on the eighth abdominal segment is 

 lost. 



The larva is evidently, like those of Telea, Tropaea, and Anthcraea, which are sluggish, 

 green, and have very convex segments, protected from observation, so much so that the arma- 

 ture is of no advantage and is consequently discarded through disuse. 



Although the genus Lobohunaea was proposed for but a single species, what we now know 

 of the early stages of the present species amply justifies the separation of this group of forms 

 from Bunaea; the larva being so entirely different and so greatly modified compared with 

 those of Bunaea caffraria and alcinoe. 



Described from an individual in each stage kindly loaned by Lieut. Col. J. M. Fawcett. 



Food plants. — Celtis Icraussiana Bernh., and Albizzia fastigiata Oliver, flat crown (Fawcett). 



SALASSA Moore. 



Saturnia Westwood, Cabinet Oriental Entomology, p. 25, pi. 12, fig. 3. 

 Antheraea Walker, Cat. Lep. Het. Br. Mus., V, p. 1252, 1855. 

 Salassa Moore, Proc. Zool. Soc. London, 1859, p. 246. 

 Salassa Kirby, Syn. Cat. Lep. Het., I [p. 762]. 



Imago. — Head prominent between the eyes, which are moderately large; the front narrow, 

 and the dense scales on it project out far beyond the eyes, the squamation being more erect 

 and stiffer than in Bunaea. Male antennae long, bipectinated to the extreme tip (those of 

 Bunaea being filiform), not so wide and plumose as in Gynanisa and Bunaea; joints long and 

 slender; basal pectinations not so long as in Gynanisa and Bunaea or so finely and densely 

 ciliated; bearing two long stiff fine setae at the end; distal pectinations very short, about 

 one-third as long as the basal ones, and the outer ones very slightly if any longer than the 

 inner ones, and also armed with two or three long stiff slender setae. No signs of maxillae. 

 Palpi large, and stout, extending beyond the front; third joint distinct, quite free from the 

 second, rounded, button-like, as long as thick; the palpi are much longer, and the third joint 

 is larger, more distinct, than in Gynanisa or Bunaea caffraria. 



Fore wings not so falcate as in Bunaea, much more acute at apex than in Gynanisa, 

 costa straight, becoming curved toward the apex, which is sharp; outer edge oblique, but not 

 excavated, the edge being straight, not sinuous. 



