144 MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



E. cacieus, the abdoinen orange red, striped narrowly with yellow as in V. J/v'sso^/i Boisd., and 

 C. regalis. The fore wings are as in E. cacieus, the hind wings as in C. plioronea. It is quite 

 different from the 9 of C. hrissotli, which is near mextcana Grote. But I find that this same 

 9 specimen agrees well with Cramer's figure of C. laocoon S , though it is quite different from his 

 figure of the 9 . There is, indeed, no important difference except that the discal spot in his 

 figure is not double, but forms a single large yellow patch. The underside of my 9 agrees well 

 with Cramer's figure C of the underside, only differing in the three costo-subcostal yellow spots 

 being connected, but otherwise the fore and hind wings beneath are marked in the same way. 



I quite agree with the remark of Boisduval that Cramer's figures B and C of his PI. CXVII 

 represent C. regalis. 



It appears, then, that BoisduvaFs C. ivioii is a s^vnonym of Cramer's laocooit. 



Larva — Last stage.' — PI. LV, figs. 2, 2ff. Length, 78 nnii. Body of the same general shape 

 as in C. regalis, thickest on the second and third thoracic segments. Head of the same width as 

 the prothoracic plate, pale, of the same hue as the suranal plate. On each thoracic segment 

 there are eight stout spines — four on each side — and there are ten long subecjual dorsal spines or 

 ''horns." On the front edge of the prothoracic segment the two dorsal spines are large and 

 high and of the shape and about two-thirds of the size of those on the second and thii-d segments; 

 those of the suj^raspiracular row small, about one-fourth as long as those of the subjjiedian row, 

 but slenderer. One directly in front of each prothoracic spiracle is low, stout, conical, about 

 one-half as large as that in the lower or infraspiracular row. Of the four dorsal horns of the 

 second thoracic segment, each are of the same size, length, and thichiess; those of the supra- 

 spiracular row no s;i aller or shorter than those of the dorsal series. On the third thoracic segment 

 the_v are a little shorter. All the ten spines or horns end in a black polished bulb, the tip end of 

 which is whitish, the bulb bearing several (5-7) conical setiferous tubercles. The spines on the 

 sides of the body ai'e small and short; not so long as or scarcely longer than the dorsal ones are 

 thick. (Fig. 2.) On the thoracic segments those of the lowest row are much thicker, larger, 

 and longer than those of the next (infraspiracular) row above. On abdominal segments 1 to 7 

 the dor.sal, supraspiracular, and infraspiracular tubercles are all of the same shape and size, all 

 moderately long, acute, not tipped with black, and bearing from 7 to 8 sharp s^Dinules; those of 

 the lowest (infraspiracular) row a little longer than the supraspiracular ones. 



The median spine on the eighth abdominal segment is fully twice as long and large as the 

 dorsal ones on segments 1 to 7. blackish at the acute tip, with rather numerous stout spinules. 

 On each side behind the median spine are two small low tubercles, as in C. sepulcralis. A stout 

 conical smooth tubercle on segment 9, which is about one-third as long as the median one on the 

 preceding segment with two similar spines on each side of it, though those of the lower row are 

 a little larger and more spinose. 



Suranal plate (tig. 2«) short and broad, rough on the surface. Iiut unarmed (not so spiny as in 

 C. regalis, that of C. sepulcralis being still more armed); a group of four or five minute conical 

 setiferous reddish pink tubercles on each side, near the base, and a few minute ones along the 

 edge; but it is much smoother than in V. sejndcralis and also than in C regalis. Spiracles 

 black, inclosing a large pale straw-yellow center. Body green, with reddish pink spines. 

 Legs green; the mid-abdominal ones green with a blackish vertical shade, sometimes broken 

 into two spots. In front of each al)dominal spiracle is a narrow, oblique ascending black line. 

 Anal legs with a few minute spinules. 



Eood plant.— The nature of the plant on which the species feeds is not stated by Burmeister. 



Geographical distrihution. — Canta galli, Brazil (L. Agassiz, Museum of Comp. Zoology, 

 Thaj'er Expedition; collected by Doctor Teuschcr); Brazil, not rare, chiefly found in the envi- 

 rons of Bahia; a variety, 9 , from Para (Boisduval); Novo Friburgo (Boisduval, Burmeister.) 



