270 WILLIAM BLAXLAND BENHAM. 
1 consists of three annuli. The second pore is placed in the 
thirteenth annulus, thus giving seven annuli to somite 11, and 
sO on. 
The oviducal pore was not to be found, nor could I find an 
oviduct internally ; but since the ovary is in somite XIII, as 
in Lumbricus, the oviduct is presumed to be in that neigh- 
bourhood. 
The spermathecal pores are very numerous and minute ; 
it was only after dissection that I found where they are situated, 
since the spermathece have the unusual position of being 
behind the ovary ; they open on the anterior edge of somites 
XII, XIII, XIV, xv, outside, i. e. dorsad, of the lateral setz, and 
vary from one to four in each case. (Pl. XV, fig. 1, spth. p.) 
The sperm-pores are not evident superficially, as there 
are no papille or other marks in their neighbourhood ; but by 
tracing down the sperm duct I found it to end in somite xix, 
(fig. 1, mp.). Thus the worm resembles the large forms from 
America, Titanus and Anteus, in being Intraclitellian. 
Although the worm was mature I could find no capsulogenous 
glands. I hope to return to the subject of capsulogenous 
glands in a subsequent paper. 
The Body Wall.—The general structure and arrangement of 
the various layers is the same as in Lumbricus, but there are 
various small details in which a section through the body wall 
of the one differs from that through the other, both in the 
clitellar region and in other parts of the body. (Plate XVI 
bis, figs. 39 and 40.) 
The ordinary epidermis consists of the usual elements, viz. 
columnar cells (col.) and goblet cells (g0.) 
The columnar cells appear to be more squeezed together, 
if possible, towards their inner ends, than is the case in Lum- 
bricus; the nuclei of these cells are rather nearer the surface 
than in that form. 
The cuticle (cu.) is traversed by striz in two directions, and 
shows the numerous pores from the goblet cells, each at the 
junction of two strie. (Pl. XV, fig. 1 a.) 
The goblet cells are rather more numerous than in 
