to and ujiiQte with it, Wliile I :do not deny 
thè asserted fact, I only say that as thè 
number of thè luccioli is infini >tly greater 
than that of thè luccioloni j seeing that 
scmetimes th.ere ar some thousand in a snall 
space while of thè others there ar evidente 
ly only one or two , and scmetimes none, I 
am 1 ed to infer that either innumerabl e luc- 
cioli reinain Vvithout satisfac tion, or that 
one lucciolone servs for innumerable males, 
as i3 helievd to he thè case with hees. 
SeCtf ii9: it woud he cut of place tc giv 
a particul arized descripticn cf these in- 
sects here. I shoud , hov-zever, consider my 
Work incomplete if ì gave no hint of what 
part they hav in direct relation to thè pre« 
sent reserches® The light cf these insects 
does not extend over thè entire hcdy; it is 
evolvd from (thè ventral sides of) thè iast 
two rings of thè ahdomien, and this fact servs 
as thè hasis for thè use cf thè hrief term 
'’Lumàncus segmients’’* These segm.ents ar 
ccverd hy a delicate, very thin, transpar ent 
sack (penici e), which encloses a white, 
viscous, very scft (moist) suhstance, which 
one can cali thè reservcir cf thè light. 
For this reason'the lumincus segm.ents ap- 
pear white on contrast tc thè other seg- 
ments, -which ar hlackish, and they occupy 
a good quarter of thè lucciole, which is 
usuai ly four lines long and one line wide. 
By fixing a lucciole on its back on a fiat 
surf ace and examining it mdcroscopically, 
thè entire lumincus quarter shows this sack, 
which presents a great many definii points 
of h righi er Tight, which leads one tc he- 
liev that these ar very fine openings facili- 
t a t ing ih e i s suano e o f thè light f r cm h el ow . 
And thè conjecture heoome verified hy thè 
fact that hy genti y detaching thè same from 
thè luminous seginents and 1 coking thru it ai 
a hright light, one sees very minute perfora- 
tions'like those in thè Shell of an egg held 
