146 Prof. M'Intosli's Notes from the 



verrUli, sp. n., and careful consideration of the description 

 and the figures shows that besides the relationships mentioned 

 by the author this minute form presents affinities with other 

 types not mentioned by him. 



The annelid is minute, viz. 2*5 to 3 mm., and its breadth 

 is -2 to S mm. The prostoraium is large, subquadrate, with 

 rounded corners ; eyes 3 pairs, reddish brown, the first pair 

 evidently less important (as they are rudimentary) than the 

 others, which lie behind, in the position lasually found in 

 Syllids, and, from the figure, the anterior pair of these has 

 lenses. The tentacles are short, stout, and clavate, the 

 median arising between the middle pair of eyes and the 

 lateral near the anterior border of the prostomium. The 

 palpi are " small, mammiliform, situated on the ventral face 

 of the prostomium and directed downwards,^'' nearly invisible 

 from above. They have enlarged bases and short cirriform 

 distal portions. Tentacular cirri of the shape of the ten- 

 tacles, but they are supported by short cirrophores. The 

 colourless body is slightly depressed, the segments increasing 

 a little in width to the middle, the first seven (to the caudal 

 end of the gizzard — eighth segment) being short, whilst the 

 succeeding are longer and contain the gonads. The proboscis 

 occupies the first three segment;^, is more or less cylindrical, 

 with thick brownish chitinous lining, edentulous. The rim 

 has a circle of ten soft papillse. The pygidium is small 

 and bears a median unjointerl ventral style and a pair of very 

 long unjointed cirri. The prominent foot is uniramous on 

 all the segments in the immature worm and on the first 

 seven of the sexually mature. The dorsal cirrus is of the 

 same shape and size as the tentacular cirri on the first three 

 segments. The succeeding are more slender and tapered, 

 with the tip often differentiated as a more slender and subu- 

 late process, and they (cirri) increase in length toward the 

 middle, again diminishing posteriorly, whilst they also be- 

 come distinctly jointed or moniliform, though the author 

 adds that there is great difference in this respect, some having 

 the cirri much more distinctly moniliform than others, and 

 '' sometimes there is a slight but distinct alternation of longer 

 and shorter cirri ; '* but these conditions are not constant. 

 The setigerous lobe has a single spine, which ends in a rough 

 flattened knob, is compressed and slopes inward fx'ora the 

 salient dorsal angle. The ventral cirrus leaves the setigerous 

 lobe near the tip, is comparatively long, and usually presents 

 " irregular constrictions and a more slender, blunt, terminal 

 piece." The setigerous process bears dorsally a single simple 

 bristle, " curved and slightlv thickened distallv, finely toothed 



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