628 



Memoirs of the Indian Museum. 



[Voi,. V, 



and a group of dorsal capillary setae. There are two long slender anterior lobes. 

 The posterior cordate lobe has now moved towards the ventral border, and there is no 

 posterior lobe. There are two spines. 



In the 4th foot (fig. 17F, and text-fig. 16a), the posterior cordate lobe of the 

 ist and 2nd feet has now definitely assumed its position as the ventral cirrus. The 

 fillet, which lies behind the setae, is attached. to the two anterior lobes in the region 

 of the spines, and is thus broken into three sections. The dorsal capillary setae are in 

 two bundles, above and below the dorsal spine, whilst the compound setae have 

 a similar relation to the ventral spine. 



The 6th and 8th feet (text-fig. 16Ô) are similar, except that the fillet runs further 

 out along the upper anterior lobe. It then passes direct to the ventral cirrus, and is 

 not fused to the lower anterior lobe. 





a 



Text-fig. 16. — Parapodial diagrams of Glycera alba var. cochinensis, var. nov. 

 a. 4th foot ; b. 6th or 8th foot ; c. 10th foot ; d. 40th foot ; e. 110th foot. 

 • = capillary setae ; x = compound setae. 



In the 10th foot (text-fig. 16c) the dorsal projection of the fillet now forms a 

 posterior lobe, and is quite free from the upper anterior lobe. 



In the 12th foot the posterior lobe is half as long as the upper anterior lobe. The 

 fillet projects slightly outwards behind the lower anterior lobe. 



The first branchia appears on the 17th foot, as a short stumpy lobe above the 

 posterior dorsal lobe. It increases in size up to the 30th foot. 



The 40th foot (fig. 17H, and text-fig. i.6d) represents the normal condition. The 

 branchia is very large, 3 or 4 times as long as any of the foot lobes. The upper 

 posterior lobe is always much shorter than the anterior lobes, whilst the lower poste- 

 rior lobe is only just indicated by the outward curve of the fillet. 



Towards the posterior end the various lobes (excepting the dorsal cirrus, which 

 remains short and rounded) become thinner and more pointed. The noth foot (text- 



