320 REPORT OF A CliUISB IN H.M.S. "RESEARCH" 



E-eynell's current, but in fact it does not exist except as a surface 

 current, due to prevalent westerly winds. This was shown both by 

 the daily observations of Captain Aid rich with cum^ent logs, and by 

 the contents of the tow-net. The current log showed that the tides 

 cause a rotatory current moving in the same direction as the hands 

 of a watch, and there is a tendency for the rotating stream to move 

 very slowly eastward. The observations were still in progress when 

 I left the ship, and will be published in another place by Captain 

 Aldrich. 



The surface fauna was quite different from anything that I have 

 seen in the Channel. Going from Plymouth to Cork, we passed 

 through shoals of Aurelia, but on our stations in the eleventh 

 meridian W. not a single Aurelia was to be seen. On July 12th 

 we passed through a shoal, miles in extent, of Pelagia perla, Haeckel, 

 a form which I have never seen near Plymouth, and which is only 

 at rare intervals cast ashore at Mount's Bay. Each day the net was 

 full of Salpa democratica-mucronata, Forskal, a form which I have 

 never met with during two summers at Plymouth ; and DoUolum 

 Ehrenhergii, Krohn, of which only a few isolated individuals are to be 

 found near Plymouth. Of the Copepoda certain ubiquitous species 

 were plentiful enough {Cetochilus septentrionalis, Clausia elongata, 

 Dias longiremis, Centropages typicus, Oithona spinirostris, and Cory- 

 cseus anglicus), but more oceanic conditions were indicated by the 

 relatively greater abundance of the first named. I obtained also a 

 large number of Ectinosoma atlanticum, Brady and Robertson, a 

 form which I have never seen in the neighbourhood of Plymouth. 

 In addition to these I took two specimens of Oncsea, which I am 

 satisfied belong to Oncsea ohtusa, Dana, as figured by Brady in the 

 " Challenger " Reports, and not to 0. mediterranea, Clans, which I 

 found near Plymouth in 1889. 



The common oceanic Phyllopods Podon and Evadne occurred in 

 great numbers, as also did Hyperia galha, Mont. ; and there were a 

 few Zoea and Megalopa stages of Decapods, but these were far less 

 numerous than in seas nearer land. Tomopteris was fairly common, 

 but Sagitta was far less abundant than in the seas near Plymouth. 

 On one occasion I obtained several very large Bipinnaria larvee and 

 several later stages in Asterid development. Together with these 

 were Holothurian larv^ (probably of H, tremula), the tailed larvee 

 of DoUolum, and a single specimen of Tornaria Krohnii, a species 

 which I had previously taken near Plymouth. 



Of the AnthomedusEe the species common near the English shores, 

 such as Ohelia, Lizzia, and Thaumantias , were entirely absent, but 

 on two occasions I captured large numbers of a very fragile and 

 peculiar Medusa, of which I have been unable to determine the 



