180 Prof. Mcintosh's Notes from the 



touching the ground. The larval forms of Nerine, Poli/dora, 

 Polynoe, and TereheUa were also obtained ; but this net was 

 less productive of Folychmta than the bottom-net. 



In the surface-net, in addition to the forms already men- 

 tioned, larvffi of Nereis and young forms of Magelona papilli- 

 cornis appeared. Tomopteris was procured only once. In 

 the open sea near the Bell Rock the chief novelty was a 

 young example of Hermadion pellucidum. 



Throughout September the bottom-nets were especially rich 

 in the larval, post-larval, and young Annelids, the most con- 

 spicuous being still those of the Spionidse, e. g. Nerine, Spio, 

 and Polydora^ from the minute larvse with the enormous 

 bristles to the more elongated forms with a pair of tentacles. 

 The fifth body-segment in the Folydorm showed the charac- 

 teristic bristles with the hook at the tip, and some reached 

 2*5 miHira. in length. The abundance of Polydora is not 

 surprising, since it is one of the most common species in the 

 sea, perforating the rocks along the beach and shells — both 

 living and dead — from the tidal margin to deep water. The 

 adult forms of Nerine, Scolecolepis^ and Spio are also very 

 frequent between tide-marks. 



Besides the foregoing was a young Aplirodita 5 millim. 

 long, trochospheres of Polynoidaj with post-larval and young- 

 forms, a young example of Lcenilla setosissima about 1 

 millim. long with bristles and scales, a young specimen 

 of Pholoe minuta with four pairs of parapodia, a young 

 Nephthys with six pairs, a caudal style of two segments 

 articulated like the glandular hair of a plant, and a young 

 Ct'rratulus about 3 millim. long. Young Phyllodocidse, 

 IWehellce, and Ariciidse, unknown trochospheres, and a 

 young Turbellarian of a light greenish colour by transmitted 

 light were also present. Autolyius proUfer^ after an absence 

 of some weeks, again made its appearance this month. 



The midwater-net presented a contrast to the foregoing, 

 since larval forms of the Spionidge only were observed occa- 

 sionally, and once a young example of Nerine \ inch long. 

 On the other hand, Tomopteris | inch in length was obtained 

 several times, though sparingly. Sagittce also occurred fre- 

 quently in this net, but in small numbers, except on the 5th. 

 They ranged from 12 to 16 millim. 



Larval Annelids were much more frequent in the surface- 

 nets than in the latter, though they fell far short of the 

 bottom-net in this respect. The majority pertained to the 

 Spionidai, as already explained, and some were obtained in 

 every haul of the net, though larval forms of the Polynoidse 

 occurred occasionally. Totnopteris appeared only once, but 



