ON SOME INSECT DEFORMITIES. 
In arranging the Lepidoptera of the collection, I found, among the 
insects brought home from Brazil by Professor L. Agassiz, a speci- 
men of Morpho Eurt/lochus with the head of the caterpillar. The 
excellent condition of the large specimen induced me to compare all 
published observations of a similar deformity. These are few, and scat- 
tered in transactions not easily accessible. Therefore I concluded to 
reprint the full text for the two oldest known, and to give copies of the 
figures, together with those of M. Eurylochus. In the hope of having 
information about other similar cases, I published a provisional paper in 
the Stettin Ent. Zeit. (1872), p. 388, and I am indebted to Professor Zeller 
of Stettin, Professor Westwood of Oxford, Mr. M'Lachlan of London, 
and Dr. J. L. Leconte of Philadelphia, for additional information. 
The rare and less known paper of Mr. C. Majoli, on a precocious 
development of Bombyx Mori, and the notice of two deformities of 
Coleoptera, seemed to me not out of place in this paper. 
PERFECT INSECTS WITH THE LARVAL HEAD. 
Phalsena heteroclita. 
The well-known Danish naturalist, Professor 0. F. Mueller, has de- 
scribed (1764) in his Fauna Fridrichsdalina, p. 47, No. 413, a new 
species of Noctua, found by himself at Fridrichsdal, a locality a few 
miles distant from Kopenhagen. 
Phal. JST. heteroclita subcristata, capite erucae, antennis nullis : alis 
albis, lineis transversim undatis punctatisque marginalibus nigris. In 
Epilobio. 
This description is verbatim, repeated by himself in his Prodromus 
Faunas Danicse (1776), p. 124, No. 1428. 
In the Mem. de Mathem. et de Phys. presenters a l'Acad. R. des 
Sciences a Paris (1774), Vol. VI, pp. 508-511, pi. 1, Professor 0. F. 
Mueller has given a detailed account of this most remarkable speci- 
