FAUNA OF LIVERPOOL BAY. 845 



indistinct rays in the large posterior sucker. Van 

 Beneden and Hesse (op. cit.) give a description with 

 figures of Trochopus tubipovus (Diesing) from the Yellow 

 Grurnard, but the above species does not appear to be that 

 form. 



4 



A*a^*- 



&/ \*L> 



? Placunella pini, Van Beneden and Hesse, from ventral surface, x 16. 



There is no doubt that by careful examination of the 

 various fishes taken in the local sea, other trematode 

 parasites will in time be found. Practically every species 

 of fish has its own peculiar parasites, but some are more 

 easily overlooked than others on account of their small 

 size and resemblance to the particular region they adhere 

 to. 



Crustacea (Macrura). 



8. — Upogebia deltawra (Leach). 



Gebia deltaura, Leach, Malac. Podolph. Brit., t. xxxi., fig. 9, 10. 

 An almost perfect specimen of this curious lobster-like 

 crustacean, measuring two inches in length, was found in 



