1912.] J. STEPHENSON: The Fauna of Yunnan. 275 
round the ring. The following numbers were counted :—ca. %/vii, 
ca. *"/siii, “/xvii, and 50—56 in the middle region of the body. 
INTERNAL ANATOMY.—Sefta °/,, °/,, /, are moderately thick- 
ened, °/, and */,, are absent, °/,, and /,, considerably thickened, 
#/, and 1%/,, slightly so. 
The gizzard occupies segments viii—ix. The tntestine begins 
in xvi; there is a well-marked typhlosole. A pair of large conical 
intestinal diverticula originate in xxvi. 
The last heart is situated in segment xiii; ‘ blood glands’ are 
present, a pair in each segment, along the course of the dorsal 
vessel on the intestine, as in P. posthuma. 
The nephridial system is micronephric; the nephridia are very 
minute, scattered over the internal surface of the body-wall. 
Testes and seminal funnels are enclosed in testicular sacs, of 
moderate size, paired, quite separate from each other, in segments 
x and xi. The two vasa deferentia of each side unite into one at 
the posterior boundary of xi. 
The seminal vesicles, in segments xi and xii, are paired, of com- 
Fic. 1.—Spermatheca of Pheretima divergens var. yunnanensts. 
paratively small size, irregularly lobulated, with in every case a 
fairlv distinct mesially projecting lobe. 
Prostates are absent. The terminal portion of the male duct 
on each side is much thickened and looped. 
The spermathece_ (fig. 1) are in four pairs, corresponding to 
furrows °/,—*/,. The ampulle are of an inverted pear-shape (the 
broader end below), the duct is thick and short,—one-third the 
length of the ampulla. From the distal end of the duct arises 
the diverticulum, thin and tubular for most of its extent but 
swollen at its proximal end; the length of the diverticulum varies ; 
it is mostly '/,—?*/, as long as the ampullla and duct; the figure 
was drawn from one of the organs where it was even longer than 
the upper of these limits. In the case of the most posterior pair 
of spermathecee in the specimen here described, the swollen end of 
the diverticulum was more rounded, and not so elongated asin the 
rest. 
Corresponding to the papillae on segments vii, viii, and ix, 
there are seen on the inner side of the body wall small accessory 
glands, white and tuft-like: sessile on the body-wall (ix), or with 
a short thick duct (vii), or consisting of two minute tufts (viii). 
