220 MEMOIRS NATIONAL ACADEMY OF SCIENCES. vol. xii, 



with a black ring and top. The dorsal tubercles of all the other segments were of deep orange, 

 changing in most cases to coral red. The other tubercles were pale blue, with more or less 

 black. Exceptions: Some had all the tubercles black except the dorsal ones; others had all 

 blue; others all blue with black rings; in all cases the dorsal tubercles were orange or coral red. 

 The legs were yellow green with black tips. The prolegs either plain yellow green or with black 

 marks. The anal plate was very yellow green. Spiracles white encircled by a very slight dark 

 line. The shades of green varied much, and the amount and position of black marking varied 

 more, and one or two larvae had no black on the body and but slight marking on head and legs. 



Fourth molt in six days. — Head yellow-green, large and round. Body of a peculiar dark 

 gray-green, lighter on the dorsum, very dark on the venter, except the first segment which was 

 light yellow green like the head. Dorsal tubercles all yellow with shining black spines, the others 

 pale blue with black rings. Legs green with black tips, prolegs very yellow green, spiracles white. 



In this stage they gave out a strong odor like camphor, and still refused all leaves but those 

 from the tips of saplings. This was a marked characteristic, for most larvae prefer older leaves 

 after the second molt. In this stage they were very delicate, and many died without apparent 

 cause. They fed for 16 days, then slowly spun their cocoons. The male moths were polyga- 

 mous and mated freely with angulifera and promethea as well as and after mating with their 

 own species. The moths are the most restless and excitable saturniids I know, the females 

 protruding the ovipositor before their wings were half spread after emerging, and they were 

 slow in developing. Some moistened the end of the cocoon before emerging, others seemed to 

 push through it without any "opener. " — Caroline G. Soule.] 



[The following on S. gloveri was published by Dr. Packard in Proc. Amer. Acad., XXVIII, 

 p. 65:] 



Young larva, just hatched. — May 15. Just as it slips out of the egg, the body and head 

 are jet black, but the spines are white, though their tips at the origin of the hairs are black. 

 In a few moments, however, the spines turn jet black; the hairs arising from them being white. 



[The following notes were found among Dr. Packard's MSS. :] 



Eggs from Miles City, Mont.; sent June 6, 1893, [larva] described June 14, length 6-7 mm. 



Head about as wide as body, shining black; body dull brown-black; tubercles all black, with 



pale gray hairs; dorsal, thoracic, and those on last three segments of abdomen a little larger 



and longer than those on abdominal segments 1 to 7, the dorsal ones on eighth abdominal 



segment a little larger than the others. Thoracic legs shining black, abdominal legs dull livid 



brown. Spines black-brown, with pale ring around the base. 



. [Larva] July 26, 1901, from Joutel; stage IV, length 39 mm. Head apple green, not 



spotted; six prothoracic spines turquoise, the two dorsal rows of tubercles, second and third 



thoracic, abdominal 1-7 and median one on eight segment, bright orange red, but yellow on 



basal third; all tubercles of lateral rows, and the dorsal ones on ninth and tenth abdominal 



segments turquoise, including those on suranal plate ; spiracles light pale luteous, with a narrow 



black ring. 



SAMIA COLUMBIA Smith. 



Plate IX, figs. 3-6; X, fig. 1; LI, fig. 2; LVIII, figs. 1, 2. 



[Samia Columbia Smith, Proc. Boston Soc. Nat. Hist., IX (1865), p. 343.] 



Imago. — Six c? , six ? . Several others also examined. Antennae dark purple-madder, 

 those of the male not so broadly pectinated as in cecropia or the two other species. Body very 

 hairy, of a rich dark purple-madder; hinder part of the thorax and base of hind wings Vandyke 

 brown. Prothorax white; abdomen broadly and conspicuously ringed or banded with white 

 in c? and ? , the white bands being wide in ? . The fore wings are slightly less rounded at the 

 apex and more falcate than in S. cecropia and the size smaller. 



Wings of both pairs much darker than S. cecropia, being of a rich dark purple madder- 

 brown; while the lines or bands corresponding to the wlnte or those tending to become white 

 in S. cecropia are broader, more distinctly and conspicuously white, and contrast more with the 

 rest of the wings. 



