44 TBANSACTTONS LIVEKPOOL BIOLOGICAL SOCIETY. 



puncta, Baird ; Gytherideapapillosa, Bosquet; C.punctil- 

 lata, G. S. B. ; Bythocythere acuta, Norman; B. constricta, 

 G. 0. S.; B. turgida, G. 0. Sars; Machcerina tenuissima, 

 Norman. 



The common Loxoconcha impressa is extremely abundant 

 sometimes on weed brought into the laboratory at Port 

 Erin from the shore pools. About the Cytheropteron 

 pyramidale noted above, Prof. Brady writes as follows : — 

 " I find that it must be referred to G. pyramidale, a 

 species of which there has been hitherto no undoubted 

 British record. It comes very near to C. latissimiim 

 which, on our east coast, is a common species, but is 

 not found on the west. In a gathering from 14 miles 

 N. by W. of the Liverpool Lighcship, C. pyramidale is 

 quite the prevailing form. This is very interesting. I do 

 not think I have seen it in any of the Isle of Man 

 gatherings." 



In regard to the Copepoda Mr. I. C. Thompson has 

 drawn up a general report upon the additions to our 

 knowledge of the group (see p. 46) ; while Mr. Andrew 

 Scott, "Fisheries" Assistant at University College, has 

 supplied the following notes upon some new species of 

 Ectinosoma and other Copepoda, at which he has been 

 specially working : — 



" Longipedia minor T. & A. Scott. — A few specimens 

 of this species were collected by hand-net in the rock- 

 pools at Hilbre Island in March. It is easily distinguished 

 from L coronata (Claus) by its much smaller size. 



" Ectinosoma normani, n. sp. (T. & A. S.). — Several 

 specimens of this Ectinosoma were obtained in material 

 from Barrow Channel, collected by Professor Herdman in 

 May, and it was also found by Mr. Thompson at Port 

 Erin. When fresh this species has a brilliant red spot on 

 the lower angles of the cephalothorax, and in this respect 

 it agrees with E. erythrops, Brady. 



