PERFECT INSECTS WITH THE LARVAL HEAD. 
13 
The female showed perfectly well the head of the caterpillar, and 
beneath it the skin of the chrysalis, containing the head of the imago. 
"Itaque ibi senecta) caput [head of the caterpillar], nymphae ver- 
tex et necydali [imaginis] conjnncta conspiciebantur ; qua3 conjunctio 
retinebat senectam [skin of the caterpillar] in ventre, ne potuerit 
potius avelli et destringi. Ideo et coha^rebat, cum alvi acumine, non 
aliter ac si quis sacco fuit inclusus ; et circa caput astrictns ; facto vero 
in tergo foramine dorsum extraxisset quidem, sed adhuc haereret capite 
et podice, ita jacens incurvus et exanimis. Sic habebat senecta (the 
caterpillar]. Ex hac prominebat et aurelia [chrysalis], quocl attinet 
partem superiorem. Ex aurelia vicissim necydalus [imago] fere totus 
eluctatus erat, fracto putamine in dorso, solitaque regione ; sed capita 
cohrcrebant indivulsa, sicut et alvi extrema. In ventro exorto magna 
copia ovorum conspiciebatur colore flavo." 
The statement of the skin of the caterpillar split on the dorsum dis- 
agrees with the statement by Mr. Bruinsma. 
Professor Van der Hoeven (ibid., p. 274) communicates, in a letter to 
Mr. A. Brants, November 26, 1839, that Mr. Einodhven, in his silk-worm 
nursery at Brummen, Holland, had observed several times imagines 
with the head of the caterpillar. Mr. Brants was able to take out of 
one of them the perfectly developed head of the imago. The antenna) 
were coiled up, covering the eyes of the insect. 
Mr. Bond exhibited in the Entomological Society in London, Febru- 
ary 20, 1871, a specimen of B. Mori retaining the larval head. The 
specimen was somewhat crippled and very small, as I am informed by 
Mr. M'Lachlan. 
Gastropacha quercifolia. 
A specimen with the larval head is recorded by Professor Westwood 
in Entomol. Month. Magaz., No. 82, p. 239. 
Zerene adusta. 
I am indebted to Professor Zeller for the details of this. Among a 
number of caterpillars of this species, one transformed in a chrysalis, 
with the head of the caterpillar. The chrysalis died, perhaps because 
it was kept too dry. Otherwise probably a moth would have been 
reared, as the chrysalis was perfectly developed. The head of the cat- 
erpillar was in perfect condition, but placed so far beneath that the 
chrysalis had a hunchbacked appearance. The nice and the ventral 
side met in an acute angle ; a collum was wanting, but the head was 
round, separated more deeply below. As all parts of the head of the 
chrysalis are covered by the head of the caterpillar, there are no an- 
