234 Transactions.— Zoology. 
The long straight trachea, whose rings only partially surround it, 
divides into two short bronchi, each of which ends in a large cavity. The 
lungs are two long thin sacs, with partly transparent walls. The walls have 
on their inner face a few villous-like projections. There is in each lung this 
one large cavity, therefore the bronchi do not divide or subdivide as in the 
higher animals. Each lung is one-and-three-quarter inches in length, each 
lies in close contact with the stomach. No thymus or thyroid. 
Female Generative Organs. 
In the first tuatara the whole of the abdomen and pelvis was filled with 
two parallel rows of eggs. There were five eggs in each row. All were 
about the same size, and appeared in the same stage of development. One 
was deep in the pelvis, and this seemed a trifle larger than the others. Its 
end too was sharper, and it was longer than the others: it was evidently 
being moulded ere being extruded, just as is the head of the human fetus. 
These eggs were five-eighths of an inch in length, with their thin ends 
pointing towards the cloaca, and extended from the heart to the pelvis. 
They present a most curious appearance. All the other organs seemed 
squeezed and pushed aside by them. The space occupied by two eggs 
is equal to that occupied by the other abdominal viscera. The oviducts, 
firm white tubes, with constrictions dividing each egg from the others. 
Each oviduct is attached by a long, thin, black process of peritoneum 
to the spine; but this is long enough to allow the eggs to rest on the 
abdominal ribs, 
In the space between these ligaments lies the spinal lobe of the liver. 
Each egg is covered with a thick dense membrane, composed of closely- 
interwoven bands of fibrous tissue, and lined by a thinner and smoother 
membrane. Each egg consisted of an oily-looking fluid, and lying in this 
a large dense yellow portion. In the eggs kept in spirits this portion was 
coagulated and granular. In the other specimen, where the eggs were far. 
less developed, the dense internal portion alone was visible. The ovaries 
are two thin flattened bodies, attached by peritoneums to the ribs near the 
junction of abdomen and thorax. Each ovary contained great numbers of 
very small eggs, flattened by pressure against each other. 
Bladder, large hollow viscus, extending half-an-inch above the pelvis, 
and opening into the cloaca. Giinther says that the males have no 
“ intromittent copulatory organ." Most Lacertilians have a double or bifid 
penis; the geckos have none. On account of the absence of a penis and 
a membrana tympani, Professor Peters proposes to class them with Agamide. 
Dr. Günther's description of the anal scent-gland in the males applies 
exactly to the females, 
