86 NOTKS OF TWO DAVs' TRAWIJNc; AND 



Velutina hevigala. On our Blackwater excursion in 1888 (E. N., 

 ii., 248), we took two of these alive, the rich scarlet bodies being 

 very conspicuous. 



Lacuna crassior, with its pretty, wrinkled epidermis, crawling on 

 masses of shells and zoophytes, came up in great abundance, but 

 all small ; not so big, even, as those we took on the Orwell. On the 

 Devon and Dorset coast I have taken them, fully grown, about half 

 an inch in length. 



Whelks and " Tingles " occurred largely as before — l)ut of the 

 latter, the Dog Whelk {Purpura lapillus), we obtained a varied series, 

 some of the shells being banded with black and white, others in 

 various yellows and browns, and one purely white ; but the noticeable 

 feature being the series of delicate frills with which they were all 

 more or less covered — these frills being the marks of growth, the 

 up-turned edges of the former peristome. In water exposed to 

 heavy seas and masses of shingle, these frills are not found on the 

 shell, or are broken off and the shell worn smooth. I cannot help 

 thinking that the frilled varieties are evidence of a quieter habitat. 

 These beautiful fimbriations, when they occur, give this very common 

 shell a pretty appearance. 



Of the Nudibranchs we took three species, making seven now 

 recorded in the Crouch — a good number of Doris tuberculata, but 

 all small, and one specimen of Eolis papulosa. But the most 

 beautiful and interesting was a specimen, about an inch in length, 

 of the graceful Eolis dru/nmondi, with carmine double tentacles and 

 mouth. Unfortunately, on my returning to Wanstead, we placed a 

 small Pea-Crab {Pinnotheres) in the same bottle ; and the next 

 morning I found that the voracious brute had eaten up all the 

 branchiae from its back, and it was only with difficulty I could 

 persuade him to relinquish his hold. In doing this, the left 

 pincer was torn off, so tenacious was its grip. The mutilated Eoiis 

 crawled about in a languid state for some time, but ultimately 

 succumbed to its injuries. 



In most of the Nudibranchs the dorsal tentacles are prettily 

 laminated, and in this species they are very closely ringed. 



Before quitting the Mollusca, I must mention that in January, 

 1892, a young living si)ecimen of Whelk {Buccinum uiidaium) with a 

 sinistral shell was taken by our old trawling colleague, John Bacon, 

 whilst trawling. He sent it on to Mr. Fitch, who forwarded it to 

 me. It lived about a week, but having no change of sea water, was 



