of the Mammary Organs of the Kangaroo. 83 
Es | Tan. III. 
l Fig. 1. Interior of the pouch of the virgin Kangaroo, in which 
.. the lower teat on the right side has been produced by 
artificially everting-- a. The membranous canal of 
the mammary gland, and projecting b. Its papillary 
termination. c. The follicular aperture formed by 
the opening of the canal, and through which the canal 
with its papilla is pushed and everted.—Page 65. 
Fig. 2. Young Kangaroo supposed to be only a few days old, 
figured to show the contrast between the extremely 
minute aperture of the mouth at this early period, and 
the extremity of the marsupial teat as shown in Fig. 3. 
—Page 65. 
Fig. 4. Represents the young animal in a more advanced state ; 
the teat to which it was attached is shown in Fig. 5, 
which, it will be seen, bears a very close resemblance 
to that which is produced by the artificial eversion of 
j | the canal in the mamma, as shown in Fig. 1. a. b. 
Tas. IV. 
-Fhe panniculus carnosus of the Kangaroo, covering the 
fore part of the abdomen, as described in page 68. 
The muscular fibres will be seen encircling the mouth 
of the pouch, to which they form a Sphincter. and some 
of the descending fibres are shown passing over the 
pubis to be inserted into the cloaca, a. 
TAB. V. 
This plate exhibits a view of the interior of the pouch of 
| an adult Kangaroo at the period of suckling, together 
* | with the compressing muscle of the mamma. a. Com- 
pressing muscle. 6. Marsupial teat. c. Upper and 
smaller teats.—Page 69 and 72. | 
M 2 e TAB. 
