148 Prof. M‘Intosh’s Notes from the 
articulation. The great dental plates are well defined 
externally and posteriorly, the outer border in front having 
a projection so that, as the first tooth is opposite it, the 
apparatus is hammer-like. Each plate has three large and 
widely separated teeth which apparently interlock. The 
antero-lateral plates have each a single tooth, and the 
anterior plate is large, and by transmitted light is dotted 
with minute granules. The same dotted or file-like arrange- 
ment is seen in the band passing backwards from these to 
the lateral region of the maxille and great plates. 
Fig. 3. 
Dental apparatus of Lumbriconereis brevipes. 
The anterior lateral plates are displaced. Enlarged. 
The mandibles form broad, flattened cutting-plates, the 
anterior edge of which is symmetrically notched, so that it 
resembles the tail of a fish. Dark pigment occurs on each 
outer section ; longitudinal lines internally and looped lines 
externally mark its surface. The posterior processes are 
slender. 
The anterior feet have a bluntly conical anterior lobe, 
whilst the posterior forms a small conical process which 
projects superiorly beyond the rest. ‘Two or occasionally 
