Gatfy Marine Lahoratorijy St. Aurlrews. 177 



■wings are evident on the lowei* and many others in the 

 division. The upper, as usual, are longer and more slender, 

 but also present indications of wings. The ventral lamell i 

 is separated from the dorsal by a notch with a papilla, and is 

 somewhat capstan-like, only the edges slope to a low cone in 

 the centre. Its bristles curve dowiirtard and backward, 

 tapr-r to a fine point, and have narrow wings. Moreover, 

 tliey are all minutely dotted or dappled, and many of the 

 upper forms show a peculiar mark just below the tip, as if a 

 j)ortion had been scooped out. It is possible that friction 

 may be connected with this appearance. 



The condition of the posterior region is unknown, but at 

 the 16th foot the superior lamella is still large and lanceo- 

 late, with a rounded outer or inferior margin, and the bristles 

 have rather increased in length. The ventral lamella, how- 

 ever, is smaller and of the form of a short capstan. The 

 bristles are also longer, and a ventral group of 4 or 5 larger, 

 longer, and boldly curved bristles is differentiated, each 

 tapering to a fine point, and the wings are more distinct. 



A form dredged in the 'Porcupine' Expedition of 1870 in 

 4.5 fathoms off Cape Sagres is distinguished both dorsally 

 and laterally by the structure of the snout, which is shaped 

 somewhat like that of Staurocephalus, and thus differs from 

 that of Prionospio. It has been termed Kinberyella plumosa, 

 after the distinguished Professor in Stockholm, who has done 

 so much to advance our knowledge of the marine annelids'^. 



Anteriorly, when viewed from the dorsum (PI. V. fig. 9), 

 two rather thick, flattened, anterior tentacles are separated 

 by a median papilla, whilst the buccal segment gradually 

 narrows to the base of a rounded bilobed papilla (like minia- 

 ture corpora alhicantici) on the dorsum behind. When seen 

 from the front the anterior processes present a double foliate 

 arrangement like the anterior end of certain mollusca, the 

 mouth forming a median protuberance at the ventral edge. 

 An arrangement of this kind is rare in the group. A kind 

 of collar passes round the body at this region. The mouth 

 opens immediately beneath the median papilla on the snout, 

 and the lower lip, which has a slight cleft in the centre, is 

 prominent, the aperture looking forward rather than ventrally. 

 A projection exists on one side behind the papilla, but no 

 palpi or tentacles are seen. 



* Since this was written Prof. Kinberg has passed away, full of years 

 and honours. His name will long and honourably be associated with 

 the ;;roup. 



