TKCHNICAL DKSCRIl'TInX (»F SI'ACJKS. 
W) 
the second, tlu^ two follow iiiii; ai'c .^iilxMnial and -l>oitcr iliaii ilic lir^i, 
tlie fiftli is slH)i't(M- tliaii llic I'oiiilli, and tlic >i\tli and ^cnciiiIi aic 
siil)(>(Hial and ^^liortci- than tli(> lil'tli. tli(> la>l t a|)(Miii;j; rcLCulai-U iVoin 
{he :\\)c\, which is armed wit h ciii'ncmI s|)in('>, one hin^- and oncvhoit. 
The t(M-iniiial thr(>(> joints I'oi'in >oin(M hini:,- of a chih li|). Dniin^-this 
stairt' the hir\a increases in h'n^Mh to more than ."I mm. and 1 he ah(h)- 
men swc^Hs and l)ecomes moi'c rohust . Theh'n^th of the hai'd chiti- 
iioiis parts i'(Mnain. howt>\(M\ unchanu'cd, a> foUow-^: Anteiioi' femora, 
0.27 mm.; anterior tihia\ O.oO mm.: hind til)ia\ i).:\:\ nmi. 
Tliis slaij:(^ hists mort* than n yaw, the lirsl moh nsiiahy occiii-imiil!; 
durin^ij: tlio scm-oiuI year after liatclunij:. (S(m» (i^-. 17.) 
Second larval sUige. — 'I'he a\-ei-aii(> hMiL!,th of the hii'xa in this staice is 
about 4 mm. Tlie more liorny j^arts now nunisure: .Vnterior femora, 
0.50 mm.; antcM'ior tibia\ 0.55 min.; hiiul lihia^, O.so mm. The 
i!:eneral ai)j)earance is uncliaiiii'ed from the hiter (h'\-eh)|)men1 in the 
])ro('edinii: sta<2:o. llie eye-spots are still pres(Mit, th()ii<j:h r(>duce(l. 
The under surface of the liead is armed with some ratlier h)n^ hairs, 
and a v(M"v reo:ular row of miinite sj>in(»s occurs on the ant<'rior face 
of the hind and the middle femora. 
The ]-)rominent apical til)ial s])ur of 
tlie michlle and llie .hind ])air a])- / r-J '' , f / /^ 
pears with tliis .molt, being previ- 
ously represented, if at all, by a sim- 
])le >pin(\ The third joint of the 
now distinctly elbowed antenmr is I'ig. 48.-Sccond larval stage: a, anterior log, 
as long as the second, and the thre 
outer face; h, same, inner face. (Author's 
illustration.) 
terminal joints are rather more com- 
pressed into a club-like tip than in the fu-st stage. The chief charac- 
teristics of this second stage, how^ever, are in the anterior legs ((ig. 
48). The femora now possess a rudimentary comb of three teeth, the 
U])])er tooth being v(M'y broad and projecting beyond tlie two .suc- 
ceeding sharj) ones, of which the lower is the larger. The central 
tooth of the f<'mora, which was rather minute, or, moic properly, a 
mere spine in tli(> first stage, is now^ very nuich larger and bioadened 
at the ])ase into a prominent triangular ])r()jection. Th.e tai-n^ is 
reduced to a horny rudiment about three times as long as w ide. and 
is clos(4y applied to the inner surface of the tibial 'jaw"' which 
extends twice llie length of th(> tarsus heyond the latter. 
This stage, a> already stated, is assumed during lli;> hist two or 
three month> of the .second year of the ins(>ct's existence and lasts 
nearly two years. 
Third larral stage. — Length, r» to S mm. ; anterioi- feinoi'a. 1 .20 mm. ; 
anterior tibia*, l.'^5 mm.; hind tibia". 1.^5 nun. My.- -spol^ -.{]]] more 
reduced; numerou.s j)aiall{ 1 row.s of ,>horl hairs on the head are notice- 
