122 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Lerncea minuta, T. Scott. 



( hi the gills of the common goby, Gobius mimdus. 

 W T hen present, this parasite is easily noticed, as it causes 

 a considerable expansion of the operculum,, and projects 

 from under it. 



Hacmobaphes cydopterinus (Fabr.). 



This appears to be a rare species and is not often met 

 with; only one specimen has been observed by us. It 

 was found on the gill rakers of Cotfus scorpius. 

 Oralien asellinus (Linn.) 



Occurs frequently oil the gills of the common gurnard. 

 (Jther workers have also recorded it from the gills of plaice 

 and halibut. 



Chondracanthus cor nidus (Miiller). 



Occasionally found on the gills of plaice. Size, G 

 mm. to T mm. 



Chondracanthus clavatus, Bassett Smith. 



On the gills of the lemon sole, Pleuronectes micro- 

 cephalus. Size, 6*5 mm. 



Chondracanthus solece, Kroyer. 



A well-marked species occasionally found on the gills 

 of the common sole. Size, 7'5 mm. to 8'd mm. 



Chondracanthus lophii (Johnstone). 



This appears to be one of the more common members 

 of the Chrondracanthidse, and is frequently found in the 

 gill chamber of the Angler fish. 



Chondracanthus merluccii, Holten. 



Very common sometimes in the hake, and may be 

 found on the roof and sides of the mouth, and also on the 

 under side of the tongue, and attached to the inner surface 

 of the operculum. Size 12'5 mm. 



In all the Chondracanthus the males are verv small, 



