MARINE BIOLOGICAL STATION AT PORT ERIN. 53 



fathoms and 60 fathoms, on August 24th, 1907. It is 

 very small, about 0'7 mm. in length, and is easily 

 overlooked. 



Ameira intermedia, T. Scott. — Four specimens of 

 this little copepod were found in a Hensen net collection 

 from Wart Bank, on August 29th. 



Hetero-psyllus curticaudatus, T. Scott. — One or two 

 specimens of this curious form were taken in a Hensen 

 net collection near Piel Gas Buoy in the course of one of 

 the monthly investigations at present being conducted 

 between Piel and Ormes Head (January, 1907). 



Chondracanthus zei, De la Roche. — Specimens of this 

 peculiar parasitic copepod have been found on the gills of 

 Zeus faber captured from time to time in the trawl of the 

 " John Fell," during the present year. The species is 

 evidently not a common one. On October 8th seven 

 specimens of Dory, captured near Puffin Island, were 

 examined, and only one C. zei was found. C aligns zei on 

 the other hand was present on the skin of all the fish. 



Lerncea hisci, Bassett-Smith. — One specimen on the 

 gills of Gadus luscus captured off Morecambe Bay Light- 

 vessel by the fisheries steamer, February, 1907." 



Further Notes on Work. 



Dr. H. E. Roaf continued, on several occasions 

 during the year, his investigation of the digestive pro- 

 cesses of lower animals. Extracts were made from the 

 digestive glands of various Invertebrata, and the action 

 of these extracts in digesting different kinds of food 

 material is now being examined in detail in the 

 physiological laboratory of the University. 



Dr. Roaf has also been investigating at Port Erin 

 the bio-chemistry of the hypobranchial gland (or glands) 

 of Mollusc a, and has shown that the mantle of the dog- 



