80 
a group which has so far been but little worked, known as Euchy- 
traeidae ; and finally the water worms, among which much yet 
remains to be 
have already been recorded. Following the order adopted in that 
catalogue, we have to add the under-mentioned. 
Limnodrilus sp. Coll. H. F., August 4th, 1909, in putrid soil, on 
the margin of the Lily pond near the North Gallery. 
Perichasta nipponica, Beddard. Monogr. Olig. 413. Coll. 
J. Lambourne. 
Fig. 1. 
Fig. 1. Trichochaeta hesperidum, Beddard. x 2., 
peristomium ; pr. prostomium extended ; tp. (18-21 
so nephridiopores, lateral view ; v.s. ventral setae, pai 
y: 
g. girdle (14-21); per. 
\ tubercula pubertatis ; 
paired in anterior portion of 
I have also received a set of very delicate worms, from the pits, 
collected by R. G. Simpson, which appear to,be Geoscolicides ; but 
as they always arrive dead and sadly distorted, I have go far been 
unable to obtain a satisfactory diagnosis. 
LUMBRICIDAR. 
I turn now to the Lumbricidae. Among the additions are one 
or two of special interest, to which attention will be called in the 
