GLYCIPHAGUS DOHESTICTjS AND G. SPrMIPES. 
293 
of these cases. I placed some of them in a cell as before and 
dissected others ; these, in many instances, contained not the inert 
legless mass found in the cases of G. domesticus , but a distinctly 
formed living Hypopus, which had not assumed the usual brown 
chitinous colour, and could not be called active, but still was fully 
formed, and provided with short and stumpy, but thoroughly-deve- 
loped legs, which it could move about, although only in a feeble 
manner ; it was not capable of walking (ordinary Hypopi are very 
active), and it was evidently not in a condition fitted for existence as 
a free-living creature ; but yet it was undoubtedly alive and fully 
formed ; its total length was about ‘19 millim., its greatest width 
about - 15 millim. Each tarsus of the first three pairs had an 
exceedingly long, very slightly curved, blunt claw ; the tarsi of 
the fourth pair were devoid of claws and hairs. A figure of this 
Hypopus , carefully drawn from a specimen dissected out of a case 
in January 1888, is given in PI. XVI. fig. 9. The majority of the 
j Hypopi dissected out of the cases were not capable of any move- 
ment ; it was only a few which were able to move their legs. 1 now 
searched the chaff and material, and the dust &c. swept from the 
w r alls and beams of the chaff-house, very carefully in hopes of finding 
active Hypopi which had emerged and were capable of walking 
about, but neitheron this nor on any other occasion have I been able 
to discover anything of the kind ; but I did find one or two inactive 
Hypopi not capable of any movement, which seemed as if, from 
some accident, the cases had been broken away from them. On 2nd 
January, 1886, 1 took one of these, and one of the Hypopi dissected 
out of a case and which could move its legs, and put them in a cell 
by themselves. I watched them at frequent intervals, but they 
did not die or shrivel up. On the 15th January 1 missed one of 
the Hypopi ; but close to where it ought to have been I saw a 
nymph of GlycipTiagus spinipes, which had evidently just emerged 
and had some thin membrane attached to it ; on detaching this 
membrane, and examining it with a higher power, I found that it 
was the cast skin of the Hypopus. I put both the nymph and the 
cast skin in glycerine for permanent preservation. A few days 
later I dissected four more of the cases and took out four Hypopi 
and placed them on a small piece of dried leaf in a separate cell ; 
the next day I found that two had collapsed, probably having 
been injured during the dissection of their cases. The following 
day I observed that one of the remaining two had moved, and on 
touching it with a fine hair I saw that it was alive and able to 
