40 
D. KEILIN 
same general form and the same relations with the surrounding 
organs, varying only in the size and the number of the glandular 
The general structure of this organ is sufficiently 
Trxt-Fic. I. 
lobules. 
tp 
SS 
rR 
v.70: 
Br . 
IQ . 
Zh 
Gun 
Longitudinal median section of All. foetida. c¢.g.=cerebral 
ganglion ; ¢.m,v.= conductive or musculo-vascular portion of 
pharyngeal bulb; /. c. = mass of coelomic cells containing droplets 
of fat (cf. Text-fig. 7, p. 57 of this paper); oe. = oesophagus ; 
p.¢. = ciliated pharyngeal epithelium ; ph. = pharnygeal lumen ; 
s. gl. = deep or glandular portion of the pharyngeal bulb, composed 
of basophile, salivary cells ; v, n.= ventral nerve cord. x 26. 
clearly shown by Text-figures 1 and 2, which represent longi- 
tudinal median and submedian sections of the anterior portion 
Pp 1 
of the earthworm. 
! For the morphological variation of this organ the reader is referred to 
the published papers on the anatomy of earthworms. 
