ON ANNELIDA. 
89 
which communicate by a lateral orifice partly with a large 
bladder, which M. Otto thinks to be the stomach, and partly 
with a single intestine, which continues it ; the first oesopha- 
gus, more narrow, has been most frequently found empty, but 
sometimes filled with a whitish juice, while the second was 
always filled with the same brown matter as the rest of the in- 
testine ; the latter, placed under the other, has also more 
ample and more solid parietes. At the place where they 
approximate to form a common intestine, both adhere with the 
gastric bladder and with the intestine, but the first more with 
the former, and the second with the latter; so that it appears 
that the bladder should be the continuation of the superior 
oesophagus, and the intestine of the inferior. This bladder is 
large, spheroidal, very thin, diaphanous, most generally 
empty, but sometimes filled with a yellowish juice. M. Otto 
does not think that this is a true stomach, but a sort of bladder 
proper for suction. On each side of the anterior mouth is an 
organ, in the form of a cylindrical ccecum, an inch in length, 
flexuous, and full of a viscous juice. M. Otto makes this to be 
a large salivary gland. The continued intestine is very nar- 
row and cylindrical ; it makes many convolutions round the 
bladder, traverses the membranaceous partition, assumes the 
dimensions and cellular form of a bulky intestine, and pro- 
ceeds directly to the anus, surrounded in its course, as well as 
the narrow intestine, by a hepatic mass, thick, and of a yel- 
low colour. 
The apparatus of generation consists of many small sacs 
of eggs, situated in the anterior part of the visceral cavity, 
and attached together, and with the peritoneum, by filaments 
extremely fine. In the month of January, some individuals 
had neither these little sacs nor ovules, while others had them 
very much developed. M. Otto was not able to find the ori- 
fice through which they could pass. 
He was easily able to convince himself of the existence of 
