CALIFORNIA BUDRILIDA. 19 
these as chylus chambers, I do so with much hesitation, as I am not at all satisfied but 
that instead of being organs of absorption, they may not in reality be organs of dis- 
charge, or in other words, glands. TI found these chambers always empty, appearing 
entirely transparent in sections of the intestine, and they neyer stain, apparently 
showing a want of contents, though this may be a temporary condition, owing to 
the state of the worms when killed, at which time these organs may have happened 
to have been temporarily empty. As regards location, they are found principally in 
somites vii to xii, and seldom extend further back than that somite. It is to be re- 
membered that in somite xiii the tubular intestine changes its form and becomes 
considerably sacculated. In somites vii to xii this tubular part is very poor in blood 
vessels, or rather in large blood sinuses, while in xiii these sinuses begin to appear in 
large number and of large size. Thus, with no blood sinus in the epithelial folds, there 
are many pear-shaped chambers, while on the contrary, the cessation of pear-shaped 
chambers is accompanied by numerous and large blood sinuses (fig. 93). The pear- 
shaped chambers are imbedded between the epithelial cells, and probably all of them 
reach the inner cavity of the alimentary canal, though, from the sections made, this is 
not quite evident. Some of them, however, do, as will be seen from the figures 90 and 
91. They are unequally distributed; in some places they fairly crowd out the epithelial 
cells, as in fig. 91, which is drawn from a longitudinal section, showing an unusually 
large number. Fig. 92 represents a surface view where they are less numerous, 
and fig. 90 represents a camera drawing from a transverse section of the gut. Each 
chamber consists of six, seven, or, in some instances, of only two or three cells, arranged 
as the clefts in an orange, around a central pore or short tube, which, however, does not 
extend all through the papilla, but ends blindly. At the lower end these individual 
chambers connect with numerous smaller and more irregular cells, which join 
each other close to the transverse muscular layer. The small central pore stands 
frequently in connection with the alimentary cavity. In the smaller and inner 
chambers this pore is less pronounced or entirely wanting. At the base of the 
chambers are seen a number. of small glandular masses, with grainy and opaque 
contents (fig. 90 g/.). As regards the distribution of the chambers among the epithelial 
folds of the same somite, it may be noted that they are principally numerous in the 
dorsal and ventral regions, disappearing in the lateral regions (fig. 133, ep. and c. 7.). 
This is the case in all the somites where these chambers appear in the tubular intestine. 
Chylus canals have been described by Michaelsen as present in the intestine of En- 
chytrzeus, but the difference between their structure and those of Argilophilus is 
quite great. In Enchytrieus these eanals are principally intercellular, and connect 
with bloodyessels or sinuses, while the pear-shaped organs in Argilophilus are extra 
cellular, and oceur in parts of the intestine especially poor in blood vessels. The im- 
possibility to procure fresh worms will necessitate a closer study of these organs, to 
be deferred to a more opportune time. 
as oe 
Lyphlosole. The typhlosole and typhlosolar region is small, and not especially 
pronounced in front of and in the clitellar somites. Anterior to somite xix the 
