752 General Notes. [ September, 
Samia columbia Smith (Rep. 1v, p. 107)-—Mr. Herman Strecker 
has given a beautiful figure of the male of this species in his 
“ Lepidoptera Rhopaloceres and Heteroceres,” etc., 1875 (Pl. xu, 
Fig. 3), and Mr. F. B. Caulfield has described and figured the 
larva (Canadian Entomologist, x, p. 41, 1878), showing that it 1s 
structurally identical with that of cecropia, and differs only in the 
intenser green of the body, in the lateral tubercles and bases of 
the others being white instead of pale blue, and in the upper 
thoracic tubercles being of a deeper coral red. It accords more 
with the cecropia larva in the fourth stage. It is placed as a good 
specimen in Grote’s “ List of N. A. Platypterices,” etc. (Am. Phil. 
Soc., 1874), but I am still of opinion that it should not be consid- 
ered a distinct species, but simply a well-marked local color vart- 
ety worthy of name. There is great variation in color, whether 
of the larva, cocoon or imago, in cecropia. ae 
Callosamia angulifera Walker (Rep. tv, p. 122, note).—This !s 
still considered a good species by systematists, Mr. Akhurst 
finds that it is rather constant from larvee which seem to differ in 
no respect from those of promethea, but which feed on the tulip 
tree (Liriodendron tulipifera), and make the cocoon near the 
ground without pedicel. 
Celena renigera Stephens (Rep. 1, p. 86)—Referred by Grote 
to Hadena. Specimens in the Fitch collection marked with names 
evidently from Walker, cufecta, egens, defectua, subcadens ? an 
murcimaculata seem to be all synonyms and mere variations. 
Prodenia autumnalis Riley (Rep. 1, p. 116 and subsequently). 
—As stated in the eighth report (p. 48) this in the more typ! : 
form is recognized as Laphygma frugiperda Sm. and Abb. The 
variety obscura, as Professor Zeller, who has seen it, informs me, 
is so near the European exigua Hiibn., that it is not easily dis- 
tinguished. 
ANTHROPOLOGY -.' 
Tue Sacririciat Stone or THE City oF Mexico, 1s 1T GENU 
INE OR NoT?—In the city of Mexico are offered for sale, casts. o 
plaster of the so-called sacrificial stone now in the courtyard 0 
the museum in the city of Mexico, of which much has been bins 
ten to prove its genuineness. These casts are much Nas et 
size, and do not contain the groove of the original. The make” 
like many of his countrymen living in the city of Mexico, ri 
not believe in the genuineness of this stone’s history ; many sei 
that it was not the sacrificial stone of the Aztecs used in the ae 
of Mexico. -No doubt the basin in the center, and Shaped 
ning from it across the top and down the sides were made al 
sent the journeying of the Aztecs to the city of Mexico, pane 
they not cut the groove first, then the historical represemh®”” 
1 Edited by Prof. Oris T. MASON, 1305 Q Street, N. W., Washington, i . ; . 
