MAEINE BIOLOGICAL STATION ON PUFFIN ISLAND. 9 



purposes there is comparatively little that is specially 

 worthy of note. January (1891) was remarkable for the 

 enormous profusion of Sagitta in all the tow-nettings from 

 the neighbourhood of Puffin Island. From later in the 

 spring on to July the gatherings from the same region 

 were characterised by the abundance of Diatoms and a 

 slimy Conferva. 



In a ten-fathom dredging taken by Mr. A. 0. Walker 

 off the Little Orme, near Colwyn Bay, on May 6th, 

 one species of Copepod occurred which is new to 

 the district, viz., Thalestris peltata, Boeck. It has 

 apparently only once been taken before in British Seas, 

 as Brad}^ says in regard to it " One specimen only was 

 found in dredged material from a depth of 40 fms. off St. 

 Agnes, Scilly Is." The material from this same dredging 

 off the Little Orme contained also several other rare 

 species, viz., Artotrogus magniceps, Zaus goodsiri, Thales- 

 tris hihernica, and Thalestris helgolandica, the last named 

 being also new to our district. On the " Mavis " expedi- 

 tion of June 20th Anomalocera patersojiii and PonteUa 

 wollastoni, both notable species, were taken in the tow- 

 nettings about 20 miles off Southport (see also p. 20). 



Mr. A. 0. Walker gives me the following additional 

 list of Higher Crustacea taken in our district since his last 

 report deahng with the subject : — Schizopoda, Nyctiphanes 

 norvegica, M. Sars (off Puffin L), Leptomysis lingoura, 

 G.O. Sars (Colwyn Bay), Siriella armata, M. Edw\ (off' 

 Puffin I.) ; Cumacea, (Aimopsis goodsiri, v. Ben. (off 

 Puffin I.), Eudorella truncatula, Bate (off Puffin I.) ; 

 Amphipoda, Hyperoche lufkeni Bovall. (tow-net on D. 

 buoy near Puffin I.), Gitana sarsi, Boeck (off Little 

 Orme), Ptilocheirus pectinatus, Norman (Menai Straits, 

 "Hyaena" cruise, 1890), Podocerus cumhrensis, S. and K. 

 (Menai Str. and Colwyn B.), Erichthonitis difformis, M. 



