LEPEOPHTHEIRU S . 
315 
female, oval ; frontal plates small, notched in centre ; caudal 
plates small; sternal fork with simple sharp-pointed branches. 
Thorax as long as carapace. 
Hab. Belfast Bay and other parts of our coast, on the 
flounder, John Dory, mackerel, sole, and dragonet. 
Lepeophtheirus Nordmannii, M. Edw. sp.— Carapace, 
in female, rounded-oval, diaphanous. Erontal plates promi- 
nent in centre, not notched. Thorax much shorter than 
carapace. Oviferous tubes long and slender. 
Hab. Coast of Antrim, on the Orthagoriscus mold. 
Lepeophtheirus Hippoglossi, Kroyer, sp.— The whole 
animal beautifully marked with pink or reddish spots, dis- 
tributed in an irregular pattern over all the carapace, thorax, 
abdomen, and outer surface of fourth pair of legs. Sternal 
fork twice bipartite. 
Hab. On halibut, in Berwick Bay. 
Lepeophtheirus obscurus, Baird. — Carapace large, 
rounded-oval. Thorax much smaller than carapace. The 
abdomen small, square. Caudal plates stout, and giving 
off four long, finely plumose setse. Sternal fork with each 
branch bifurcated. The fourth pair of feet very long and 
stout. 
Hab. On brill taken in Belfast Bay. 
