226 ALICE L. EMBLETON ON A NEW 
spine; both rami have three articulations. The inner branch 
bears long feathered setze on its inner face, one on each of the 
first two joints, and six on the terminal joint, three of which arise 
laterally and three at the extreme tip (Pl. 22. fig. 19). The 
opposite surface is clothed with soft fine sete. The outer ramus 
is also adapted for locomotion, the first joint exhibiting distally 
on its outer face a short, sharp spine; a corresponding spine 
occurs on the second joint, which has in addition a long bearded 
seta on its inner side. The terminal joint has the sharp stout spine 
on its outer face, but on its inner surface and at the tip there 
are four long feathered sete (fig. 19), with a fifth one, much 
smaller, pointing outwards. The whole outer surface of these 
three joints is covered with soft fine sete. 
The thoracic appendages of Goidelia japonica possess no 
sucking-dises like those occurring in the previously-described 
forms. 
Thoracie Leg, 5.—In both sexes this is a uniramous organ, 
very feebly developed. It is practically the same in male and 
female, though in the latter (adult) it is broader and shorter 
relatively than in the male; in both cases it consists of three 
short equal segments, the first two each armed laterally with one 
long seta, the terminal segment carrying two (PI. 21. figs. 2, 3). 
Abdomen.—The first abdominal segment of the mature female 
is conspicuously larger than any of those following it. In reality 
it is not one segment, but is formed by the fusion of three; on 
its ventral surface it is pierced by a pair of genital pores (fig. 2, 7) 
placed obliquely. 
The abdomen in the adult male is marked with a lateral spine, 
borne on the first segment (fig. 3, 7) ; near the base of each of 
these the minute genital openings are placed. The ventral 
border of this segment is fringed posteriorly with sete (fig. 3) ; 
this edge is not parallel with the other rings, but slopes forwards 
to the centre, where there is a clearly-defined square area (#)— 
the significance of this is obscure, but it may have some sexual 
function to perform. 
Furce.—The furce are short and offer no evidence of dimorph- 
ism between the sexes; each possesses a long inner seta and a 
shorter external one. The groove between the furez runs far 
forwards on the dorsal surface, and the anus opens into it on the 
last undivided abdominal segment. Ventrally the groove is less 
conspicuous, and does not continue so far forwards as on the 
dorsal surface. 
