1 88 JOURNAL OF CONCHOLOGV. 



Pleurobranchus membranaceus Mont. I propose to 

 furnish, in a separate paper, notes and observations upon 

 this species, which occurred in such large numbers in the 

 years 1887, 1888, and 1889. 



Aplysia punctata Cuvier. These animals were found most 

 abundantly on our Eastern rocks in the spring of 1887. 

 The shields of 146 were obtained in a single day, the 

 easiest method being scalding prior to using a sharp pen- 

 knife. The migration for deposit of ova has since been 

 very unfrequent and animals scarce. Only two sea 

 hares have been obtained from the sea itself by trawling. 

 They look remarkably well in a small aquarium, with their 

 strange contortions and change of colour according to 

 movements and light. 



Triton la hombergi Cuv. A few of these animals, adults, 

 trawled on one particular course in the bay, over a period 

 of three years and on three occasions, the last from amongst 

 a portion of a large shoal of J^. mevibianaceus. The heads 

 of all were cut off, and their horny jaws have been pre- 

 served in various w^ays. The secretions of these slugs, 

 when handled, blistered the thumb and fingers. The 

 juices of the animal are as clear as water. 



Doris tuberculata Cuv. Two specimens trawled in 1SS9. 

 It occurs under rocky ledges in the bay. 



Melampus bidentatus Mont, x^live under stones and 

 rocks. 



M. myosotis Drap. Adults cast up dead on the shore. 



Otina otis Turt. Live examples from clefts in the rocks. 



Valvata piscinalis var. albina at Lewes, Sussex.^ 



I enclose six specimens of this for the Society's Cabinet, which 

 were taken at Lewes last year. — C. H. Morris, Lewes, Sussex, 

 8th February, 1893. (Read before the Conchological Society, 

 1 2th April, 1893). 



J.C., vii.. Apr. 1893. 



