188 . LIVERPOOL BIOLOGICAL SOCIETY. 
Enhydrosoma curvatum, Brady and Robertson. 
Rhyzothrixz curvata, Brady and Robertson, ‘‘Brit. Assoc. Report, p. 19 
(1875). 
A number of this species were also found in mud from 
Lilanfairfechan shore. 
Nannopus palustris, Brady. 
Another mud-frequenting species, although the first 
specimen taken was by surface tow-net near Puffin Island, 
in December, 1888. We have since found it sparingly in 
mud from Lilanfairfechan shore, and also in mud dredged 
at Port Soderick, Isle of Man. 
Platychelipus littoralis, Brady. 
Numbers of this species, both sexes, were found by Mr. 
W.S. McMillan, in mud taken from Penmon Point. 7 
Thalestris harpactoides, Claus. 
A few specimens were taken by tow-net from ‘‘ Hyzna,” 
in May, 1888, both at Douglas Bay, Isle of Man, and at 
Port Erin. We have since found it off Puffin Island, and 
in tidal rock pools at Hilbre Island; also in mud taken 
from the shore at Penmon Point. 
Thalestris serrulata, Brady. 
One specimen only, a female, of this extremely rare 
species, I found in a tow-net gathering from Puffin Island, 
in January, 1889. 
Scutellidium tisboides, Claus. 
One specimen only of this rare species was dredged in - 
Port Soderick, Isle of Man. 
Scutellidium fasciatum, Boeck. 
Porcellidium fasciatum, Boeck, ‘‘Oversigt Norges Copepoder,” p. 56 (1864). 
Aspidius fasciatus, Norman, ‘‘ Brit. Assoc. Report,” p. 298 (1868). 
One specimen, found in a tidal pool at Hilbre Island, 
March, 1889, appears unmistakably to belong to this 

