170 Scientific Proceedings, Royal Dublin Society. 
abundant. That it does occur elsewhere, although unrecorded, I 
can witness from a specimen of it in the British Museum (which 
was labelled “ Lepidonotus”) coming from Japan. At Kerguelen 
both it and its varieties seem not to have been found below a depth 
of 120 fathoms. The Japan specimen was dredged at a depth of 
43 fathoms. Perhaps it is due to the fact that the Irish specimens 
come from aso much greater depth that, although they have well- 
developed eye tubercles, they have no eyes. The only other points 
besides the absence of eyes in which the Irish specimens differ 
from the Kerguelen ones are that there are not quite so many 
segments (43 or 44 instead of from 44-47), and that there is a 
great deal of individual variation with regard to the length and 
size of the palps on the two sides of the body, sometimes the left, 
sometimes the right, being the larger, but in no specimen being 
quite equal in size. The median tentacle was only complete in one 
specimen. It is very fine and delicate, and a little over half the 
length of the longer of the two palps in this specimen. The so- 
called ‘“ glochidial” sete on the elytra-bearing segments were 
broken off in most of the specimens, but such as there were 
resembled the one figured by M‘Intosh in shape. 
II.—Leetmatonice filicornis, Kbg. 
There is one specimen which I think is to be referred to this 
species, though it differs in one point from Kinberg’s description® ; 
it was dredged at a depth of 500 fathoms 45 miles off Blackrock 
on a bottom of sand and gravel. A good deal of confusion 
obtains between the species filicornis, Kbg. and Kinbergi, Baird, 
some authors, e.g. Malmgren* and M‘Intosh,*® regarding them as 
identical, others, e.g. Ehlers,® being inclined to regard them as 
distinct species, the difference being that, while in L. filicornis, 
Khbg. the median tentacle is longer than the palps, and the ventral 
setee have no spine below the feather-like tuft at their extremity, 
8 Kinberg, K. Sv. ‘‘Freg. Eugenies Resa,’’ Zool. 11. Annulater, p. 7, pl. iii. 
£. 7, a—-h. 
4 Malmgren, Ann. Polych., p. 3. 
5 M‘Intosh, Trans. Roy. Soc., Edin., vol. xxv. Pt. 11., 1868-9, p. 407. 
6 Ehlers, ‘‘ Results of Dredging off the U. S. Coast Survey Steamer ‘ Blake.’ ”’ 
<“ Report on the Annelids,’’ p. 44, pl. vii., f. 6, and vui., f. 1-5. 
