LAWSON, ON LIMAX MAXIMUS. Bly 
above the cesophagus, where it is covered by the integument 
only, to the right lateral respiratory region ; arrived here, it 
makes a sudden turn, and passes beneath the gullet to the 
left; next it curves slightly upwards and then downwards—still 
being upon the left—and descends again, coursing beneath the 
cesophagus and toward the right side; it now ascends, and, 
going to the left above the gullet and below the liver, it is 
lost sight of ; continuing its course upon the left, it approaches 
the stomach, its convexity reclining against this organ. At 
this point, by a perfect sigmoid flexure, it encloses a portion 
of the liver (being still, however, beneath the upper part of 
this latter), winds to the right across the cesophagus, and, pass- 
ing under one of its own folds, and, finally, beneath the heart 
and pericardial gland and above the gullet, it terminates in 
the anus at the superior angle of the pulmonic orifice, being 
here retained in situ by the united muscles of the retractor 
capitis, which are looped around the gut. The anus is closed 
by a circular band of elastic tissue, which encircles this tube 
at its junction with the integument. 
The liver is by far the largest and most complete gland in 
the economy of this animal, and when separated from the 
other organs with which it is connected, appears as two 
separate structures, exhibiting what we should not have been 
led to expect, similarity of size and form; these are of a 
dark-brown colour, and have their under surfaces crowded 
with exquisite white, arterial ramifications. The liver shows 
the general tendency to assume a twining arrangement, for 
we find it adapting itself to the various folds of the intestine, 
and so embracing the latter, that, a separation of the two 
involves some delicate dissection. Each lateral division is 
conjoined to the stomachal end of the cesophagus by its wide 
and easily distinguished hepatic duct; that of the left side 
pouring its secretion into the gullet about + inch anterior 
to that of the right. Each is of an irregular oblong shape, 
bearing some likeness in outline to a lanceolate, acute leaf, 
with notched edges, and consists of numerous large and 
small lobes, bound loosely together by a web-like connective 
tissue, and attached to branches of the principal duct; it 
measures about 2 inches in length, and at its widest part 
is more than + inch in breadth, but in some specimens 
which I examined the liver did not exceed 1 inch in length, 
and was proportionally narrow. Every lobe may be divided 
into a number of component lobules, and each of the latter 
comprises seven or ten still smaller structures of an uneven 
polyhedral type, within whose walls may be observed nume- 
rous endoplasts, some of them large, with yellow or lght- 
VOL, IlI.—NEW SER. B 
