10 Notes on Habits and Metamorphosis of Lepidiota frenchi, Black. 
length in Stage I. larva; compare Figs. 5 and 15), and terminating in a 
blunt point tipped with a few papiliform sete. 
Stage I1—Body cream colour, or pale bluish-white; and much the 
same in general structure as Stage IIT. 
Greatest length and width when fully extended and just prior to 
moulting 31 & 7 mm.; length of natural curved position, 16 mm.; width 
of head 4:10 mm. On 30th April, 1917, 83 specimens (Stage IT.) 
collected at Meringa averaged in length and width, fully extended, 
27-60 & 7 mm. 
During winter months (May-August) these larvee cease feeding, and 
lie dormant in resting cells of ovate form about an inch long with com- 
pacted walls, and situated in firm soil 8 inches or more below the surface. 
Stage I.—The young grub when just hatched and in natural eurved 
5 ” to) < + 
position is 6 mm. long (14 inch) ; its greatest length and width when fully 
extended being 9 mm. * 1-90 mm, 
Body dull whitish, with peritremes and latero-cervical shield pale 
yellow, the latter of hghter tint. 
Head 2-20 mm. wide, darker yellow than peritremes; mandibles 
acute, reddish, with teeth and internal edges blackish. 
Antenne, light yellow; 3rd joint, longest; 2nd, 4th, and 5th, about 
equal length (Fig. 5). 
The interval from first to second instars occupies on an average 61 
days, the duration of this stadium having been determined from the 
moulting of about 50 larve reared from eggs laid at the laboratory 
COE): 
A little data respecting the larval instars of frenchi has appeared in 
Bulletin No. 2 of this Office by Girault and Dodd, who noticed that Stage 
I. was procurable from the end of January to June, and Stages II. and 
IIL. throughout the year. 
As regards the duration of life of the grub, from hatching of the egg 
to its assumption of the pupal form, we may, I think, conclude this period 
to be in all probability not less than a year and a-half, which would allow 
six months for the pupal, egg, and imago stages. 
THE PUPA. 
In general form resembles that of albohirta, described by Girault in 
Contribution No, 21 of this Bureau, but differs in being much smaller, of 
a uniform dull ochreous-yellow instead of yellowish-brown, and in the 
absence of transverse slit-like depressions on the venter of abdomen. 
The two spines on cremaster are far less noticeable and divergent 
than in albohirta, and the ridges of abdominal segment, dorsally, less 
acute. 
Length of pupa, 28 mm.; greatest width, 12 mm. 
