C74 DR. M. WATSON ON THE MALE ORGANS OF [June 18, 



The specimen measured 4| inches in length, exclusive of the tail. 



Penis. — The penis is large for the size of the animal, and, so 

 far as one can judge from the examination of specimens preserved 

 in alcohol, appears, in the natural condition, to be strongly curved, 

 the convexity of the curve being directed forward, whilst the extre- 

 mity of the penis is directed downward and backward toward the 

 anus. The organ is slender, and tapers gradually from base to apex, 

 measuring § of an inch in length and -^ of an inch in diameter. 

 The base is surrounded by a small prepuce consisting of little more 

 than a narrow ring of integument, and is entirely destitute of a freuum 

 prEeputii. The presence of two powerful retractores penis, however, 

 justifies us in concluding that in the Chlamydophorus, as in Da- 

 sypus sexcinctus, the penis is, in the flaccid condition, retracted 

 within this apparently rudimentary prepuce. The intermediate por- 

 tion of the penis presents an appearance of irregularly disposed cir- 

 cular constrictions, apparently due to the annulated character of the 

 integument, and corresponding exactly to that described below in the 

 six-banded Armadillo. The glans penis is not distinguishable as a 

 separate portion from the rest of the organ ; and the absence of it, 

 together with that of the bulb, would appear to indicate that a corpus 

 spongiosum is altogether wanting, as it apparently is in the Armadillo, 

 the penis in that animal being formed exclusively by the two cor- 

 pora cavernosa. I could not distinguish any patch of transverse 

 ridges on the ventral aspect of the organ, such as is seen in that of 

 Dasypus sexcinctus ; but the small size of the parts, combined with 

 their immersion in alcohol, may have obliterated these (under any cir- 

 cumstances) very minute elevations. 



Internal Organs. 



Kidney. — The kidneys are large in comparison with the size of 

 the animal, and are situated in the lumbar region. Each is almost 

 globular in form, measuring £ of an inch in length and f in breadth, 

 and is surmounted by a suprarenal capsule of large size and pyramidal 

 form. The ureter measures ^ of an inch in length, and enters 

 the bladder close to the orifice of the urethra, being crossed on its 

 inner side from before backward by the corresponding vas deferens. 



Bladder. — The bladder, glohular in form, small, and provided 

 with walls of considerable thickness, lies altogether in front of the 

 transverse ligament which uuites the two pubic bones together, and 

 which corresponds in position to the pubic portion of the brim of 

 the pelvis in the majority of mammals. The viscus is partly invested 

 by peritoneum, which forms a well-marked inferior ligament attach- 

 ing it to the middle line of the anterior abdominal wall. In the spe- 

 cimen examined the bladder was contracted, and measured \ of an 

 inch in length and the same in greatest breadth. The urethral ori- 

 fice is on a level with the base of the viscus. 



Urethra.— The urethra is divisible into two portions — an intra- 

 pelvic or muscular, and an extrapelvic or spongy portion. The 

 intrapelvic portion, from the neck of the bladder to the point of en- 

 trance of the Cowperian ducts, measures f^ °* an mQ ^ m length. Its 



