MARINE BIOLOGICAL STATION AT PORT ERIN. 45 



FAUNISTIC NOTES. 



Various notes on the natural history of marine animals 

 inhabiting the old " L.M.B.C." district are given below. Some 

 of the observations referred to may receive more detailed 

 attention when the opportunity occurs. 



(1) A stranded Cephalopod, Itlex coindeti. 



In March attention was called to a large Cephalopod 

 which had been stranded on the beach during the previous 

 night. When first seen it had been mutilated by gulls, which 

 had not only picked out the eyes but had attacked the viscera. 

 The long tentacular arms had been cut off close to their bases, 

 probably by the original captors of the specimen. The presence 

 of six conical teeth on the distal semi-circumference of the 

 suckers borne by the sessile arms enabled the observer to 

 identify the specimen as Illex coindeti. Its dimensions were 

 as follows : — Total length from base of sessile arms to posterior 

 extremity — 95 cm. ; circumference at mantle collar 56 cm. ; 

 extreme width of posterior fin, 59 cm. ; average length of 

 sessile arms, 40 cm. ; length of " pen," 71 cm. 



H. C. Chadwick. 



(2) Rare Polychaete larvae. 



In a paper on " Recent Additions to the British Marine 

 Polychseta," (Ann. and Mag. of Nat. Hist., Series 9, Vol. VIII, 

 p. 290, Sept. 1921) Professor W. C. Mcintosh describes two 

 interesting Polychaetes from the plankton of Port Erin Bay. 

 One of these is a post-larval stage of Eupkrosyne, probably 

 E. foliosa, which was first observed to occur sparingly in the 

 plankton in December, 1905, and has been noted about the 

 same time in several subsequent years. The other, of which 

 several specimens representing post-larval stages were sub- 

 mitted to Professor Mcintosh, is Pektgobia hngidrrata, which 

 has been observed in the mid winter plankton on several 



occasions. 



II. 0. Chadwick. 



