38 DR J. STEPHENSON ON 
much coiled, and may extend backwards behind the clitellum. The penial gland in my 
specimens seems to differ from the descriptions of CLaPAREDE and SourHERN. Accord- 
ing to the former, “ils occupent la cavité periviscérale en entier, dans le onziéme 
segment, produisant méme souvent une dilatation du corps dans cette région”; in the 
diagnosis of the species they are called “‘ énormes,” and in the figure are shown as being 
kidney-shaped. SourHerRN calls them ‘large,’ and describes and figures them as 
cylindrical. 
I find that they are somewhat flattened ventrally where they are sessile on the 
body-wall, but for the rest are spherical, and my specimens seem to give no hint of 
either a kidney-shaped or cylindrical form, They are large, as in most related species, but 
not, I think, so large as to call for any special remark ; and in my specimens they do not 
by any means fill the ccelom in their segment, nor cause a bulging of the body-wall. 
The ovames are smaller than the testes, and are attached as usual to the posterior 
face of septum +}. The ova, when detached, are seen in sections free in segment xii., 
and are confined to this; in the living they appear at the level of segment xili., perhaps 
through the bulging backwards of the septum. The funnel is small, and the oviduct 
short. 
The spermathece consist of an ampulla, duct, and gland-cells, having the ap- 
pearances and relations described by CLaparkpE. The ampulla is continuous with the 
cesophagus, but I have not been able to trace a continuity of lumen between the two. 
The wall of the ampulla is thin, and the cells composing it are flattened. The cells of 
the wall of the duct are in a single layer, and are not covered externally by muscle-fibres. 
The gland-cells at the base of the duct are continuous on the one hand with the epithelial 
cells of the surface of the body, and on the other with those of the duct ; the muscular 
layer of the body-wall is continued amongst and between them, the cells being so much 
elongated that they extend inwards a considerable distance beyond the level of this 
muscular layer. 
The clitellum appears as a mixture of clear and hyaline areas. Cllitellar cells are 
absent over the situation of the penial glands. 
Sporozoa occur in the cesophagus. 
As Brepparp (1) remarks, there would seem to be a mistake in CLAPAREDE's descrip- 
tion of the gonads; the testis he places in segment x., and the ovary in xii. (2.e. xi. and 
xiii. according to our notation). I do not understand, also, how he comes to speak of 
both testis and ovary as being single; he is evidently speaking of the glands them- 
selves, not of the aggregations of sperm morulz or ova (“les organes sont fixés par 
un pédoncule & la paroi du corps [or, rather, to the posterior face of the respective 
septa] . . . les produits, savoir les zoospermes et les ceufs, tombent, une fois arrivés a 
maturité, dans la cavité periviscérale”). 
[ do not consider the identification of the above form with CLAPAREDE'S species to be 
absolutely certain, since CLAPAREDE’s description is incomplete, and, in regard to the 
points mentioned by him, there are a number of differences to be taken into account, 
