18 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
purposes there is comparatively little that is specially 
worthy of note. January (1891) was remarkable for the 
enormous profusion of Sagztta 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. O. 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 Brady 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 goodsirt, Thales- 
tris hibernica, and Thalestris helgolandica, the last named 
being also new to our district. On the ‘“‘ Mavis” expedi- 
tion of June 20th Anomalocera paterson and Pontella 
wollastont, both notable species, were taken in the tow- 
nettings about 20 miles off Southport (see also p. 29). 
Mr. A. O. Walker gives me the following additional 
list_of Higher Crustacea taken in our district since his last 
report dealing with the subject :—Schizopoda, Nyctiphanes 
norvegica, M. Sars (off Puffin 1.), Leptomysis lingoura, 
G:O. Sars (Colwyn Bay), Swrvella armata, M. Edw. (off 
Puffin I.); Cumacea, Cumopsis goodswri, v. Ben. (off 
Puffin I.), Hudorella truncatula, Bate (off Puffin I.) ; 
Amphipoda, Hyperoche liitkent Bovall. (tow-net on D. 
buoy near Puffin I.), Grtana sarsi, Boeck (off Little 
Orme), Ptilocheirus pectinatus, Norman (Menai Straits, 
‘“‘Hyena’”’ cruise, 1890), Podocerus cwmbrensis, S. and R. 
(Menai Str. and Colwyn B.), Hrichthomus dufformis, M, 
