390 A. Wii,i,KY : The Fauna of Brackish Ponds. [Vol. II ^ igo8.] 



extremity ending on the first setigerous segment. At the sides 

 of the head close behind the ocular area occurs a pair of structures 

 which I identify as the scars of the occipital tentacles ; these are 

 followed by the small setigerous notopodia of the first setigerous 

 segment (figs, i and 2). The branchise commence on the second 

 setigerous segment and occur on twelve to fourteen segments only, 

 the last two or three smaller than the preceding ; they are distinct 

 to their bases, not joined to the notopodial lamellcC (fig. 3). 

 Behind the branchial region the parapodial prominences become 

 very inconspicuous. 



In the anterior segments capillary setse occur in both fascicles, 

 and the dorsal setae remain capillary throughout, becoming very 

 slender towards the posterior region of the body. Simple hooked 

 setse (setae infimse ventrales) appear singly in each neuropodium 

 from about the 12th somite (fig. 4) ; they appear to be rather 



Fig. 4. 



Fig. 5. 



Pig. 3. 



Fig. 6. 



Fig. 3. — Fourth gill-bearing parapodium from hinder aspect. The neuro- 

 podial ligule was concealed in the preparation ; compare fig. 2. 

 ,, 4 — Ventral hooked seta from 12th foot. 

 ,, S- — Guarded uncinate seta or crochet from the 28th foot ; sketched from 



a preparation in toto, 

 ,, 6. — Pygidium in side view. 



less curved in the hinder region. Guarded crochets (fig. 5) were 

 observed from about the 28th segment ; apart from the single 

 inferior ventral seta mentioned above, they are the only setse pres- 

 ent in the neuropodia of the posterior segments, 6 or 7 appearing 

 in each appendage. 



The pygidium (fig, 6), as observed in one specimen, is simple 

 with a ventral cone and a pair of low dorsal elevations. 



The first small notopodium is hard to see in side view and is 

 indicated by a dotted line in fig. 2 



