of the Ornithorhynchus Hystrix. 357 
been kept in weak spirit ; and, although many other parts had 
become putrid, those connected with the organs of generation 
had been preserved., and were in a flaccid state, more favourable 
for anatomical examination. 
I was not only enabled to examine these glands and their ducts, 
but also, by fixing a pipe into the urethra where it enters the 
penis, to inject water along that canal, so as to make it fill a small 
cavity in the centre of each glans, and from that pass through 
all the papillae, which became erect as soon as the glans was 
turgid, and scattered the water by so many small streams, about 
the size of a horse-hair, in every direction. 
Upon re-examining the female organs of the paradoxus, after 
they had been steeped in water, I was enabled to trace the ducts 
of the glands, which correspond with those of the male, to one 
common orifice on the posterior surface of the vagina, of an 
inch within the orifice of that canal. 
A clitoris was also detected, with two crura, arising from the 
outer side of the common vestibulum to the rectum and vagina. 
The clitoris was very slender, half an inch long ; its glans a 
little bifid, and inclosed in a thin prepuce ; the end of the glans 
only projected into the vestibulum. 
The female organs of the Hystrix have not been examined ; 
but there can be no doubt of their bearing the same resemblance 
to those of the male as in the paradoxus. 
Another species of Ornithorhynchus, of the same size as the 
Hystrix, was shot at Adventure Bay, Van Diemen's Land, by 
Lieutenant Guthrie, in the year 1790, a drawing of which was 
made by Captain Bligh, and sent to Sir Joseph Banks, who 
has allowed me to annex a copy of it to this Paper. The quills 
MDCCCII, , 3 A 
