12 
lyctena ir., hi. 
exud f? tin T C, ™P of green fluid. This the ants drink greedily 
are of the ° t ^ p6r * apS stanc,in ° over ;t - The demonstrations of the ants 
drinl- in the T • fTff 0 natm ' e ’ oarossin g’ entreating, and as the little creatures 
dunk inthe fluid, lifting their heads as if. to prolong the swallowing there a 
mani es satisfaction and delectation that is amusing to see. They lick away the 
h^t trace, and stroke the back of the segment, and wait to see if theirToTxrin! 
', a "' "!'»• 1 not > the y run about, some seeking other larva, on same 
? rris no ^r? °tf ! jat pre ? n% au 
‘‘ * Ihe interva l s between the appearance of the -lobule varv 
, ‘ * the eontlltlon of thc ' arva - It' exhausted by yielding to the frequent solicf 
tations, some minutes may elapse, and the tubes meanwhile will remain con 
’ff fn'Si'f rim' 0 -’'? 1111 ' 6 "T^ “ d ^ ^ intimatio " of'the 
p o an ant in the vicinity is enough to cause the tubes to play ranidlv 
bra.,r e H f * u f0ll °' V an ° ther ’ sometimes without a retracting of the' !nem- 
‘ . fi bef0l e ! e " ear approach of the ants - 1 ha ve counted six emissions in 
_ a en y-five seconds The tubes are usually expanded when the ants are away 
om the last segments, and are retracted when they come near. I counted the 
length of these periods of complete and quiet expansion, ten, twenty fifty and 
to e,ghti-two seconds the penod always ending with the approach of the a'lJ 
experimented largely, introducing ants to larvm in glas tubes, and placing 
aZZ r oZ7 Wr T b St r ° f the A where ’the ant had 
discovered it there 1 & a ™ br0U S ht to the stem > «» soon as the ants 
iscoveied it, there was an immense excitement and a rush for the last hml 
segments. The larva forthwith relieved itself by the excretion of the fluid and 
the tubes stood out with tops expanded between the periods. If I placed afresh 
la, va on a stem on which were no ants, there was no excitement in the larva no 
appearance of the tubes and no movement on 11. If ants were now transferred 
.0 this stem at once the larva changed its behavior. 
The tubes in the present species are white, cylindrical, of nearly even size 
rounded a the top, and studded therewith minute processes from which come 
the tentacles. (Fig. ««.) These are long, slender, tapering, armed with f,ne Z 
mentous spurs disposed in whorls, and they stand out streighC mai f a white 
hemispheneal dome over the cylinder, and none of them dq° bdow the° plane of 
se rnri ‘ : m t°, T“ en the tUbe “ " P ’ -A seen to i£Ta 
, . C ''’, ancl as the dome expands they take position. On the contrary 
S& to '“ d “” - “» 
The position of these organs is apparent in the younger larval staves but till 
**“' “» 1 “»>« i«v. h„ „ i p „ jMl sums 
