552 
Fio. 5. 
Mr. W. S. MacruEAY's Anatomical Observations 
Fragment of envelope. 
Right ovary. 
Left ovary. 
Œsophagus entering into the branchial pouch, 
immediately behind which is the pharynx. 
Liver coating the stomach. 
Intestine. 
Rectum. 
. Anus. 
One of the tentacular filaments of the branchial orifice 
highly magnified. 
Tas. XIX. 
RTE Oo» "nt 
. 1. Cystingia Griffithsii, seen on the right side, and of the na- 
turalsize. "The translucid nature of the envelope permits 
us to see the position of the stomach, heart, and left ovary. 
The pedicle is encrusted at the base with minute grains 
of sand. 
. 2. Cystingia Griffithsii magnified, and seen on the left side. 
The transparency of the external envelope permits us to 
see the external arch of the dorsal sulcus, and the pointed 
internal arch touching the former at a point where there 
is a lateral orifice. Immediately below this we see the left 
ovary through the transparent envelope, and a little on 
one side is that dark-coloured nodule, which on dissec- 
tion appears to be contained in a pouch. 
C. Branchial orifice. 
A. Anal orifice. 
S. Grains of sand that externally encrust the thick 
end of the pedicle. 
. Outline of the Cystingia Griffithsii much magnified, to 
show the various parts in situ on a portion of the right 
side of the envelope being removed. 
A. Anal 
