166 SUPPLEMENT. 



been the only writer among the ancients who did not praise 

 oysters. In his 95th Letter he asks his friend Lucilius 

 whether this very sluggish and dirt-fattened food does not 

 produce in the eater its own muddy dulness. 



P. 45. In 1867 the annual consumption of oysters at Paris 

 was calculated at 288 millions. They are sold in London all the 

 year round. Why have we not a " close time," as for Salmon, 

 instead of allowing a million of fry to be gulped at one mouthful? 



P. 47, 1. 4 from top, for " Sannazarius " r. " Sannazzaro." 



P. 51. PECTEN PUSIO. N. of Hebr., 530 f. (C. & T.). 

 F. Portrush (Portlock and A. Bell). E. Cape of Good Hope 

 (Dunker) ! 



p. 53. p. VARITJS. F. England and Ireland. E. Chris- 

 tiansund southwards (Sars). 



P. 58. P. ISLANDICTTS. F. Gulf of Naples, in 50 f. ; a 

 single valve in a semifossil state, like those dredged in Shet- 

 land, and covered with the same arctic species of ftpirorbis ; 

 with it was a valve of P. opercularis, in the same condition, 

 and as large as northern specimens ! E. Finmark to Bergen, 

 where it becomes dwindled, in 5-50 f. (Sars). 



p. 59. P. OPERCULARIS. N. of Hebr., 530 f. (C. & T.). 

 F. England, Ireland, Scandinavia, and Italy. 



P. 62. P. SEPTEMRADIATUS. 



BODY whitish, tinged with fleshcolour, and minutely speckled 

 with flake-white ; the colour is also diversified by blotches and 

 streaks of dark brown, orange, yellow, or greenish: mantle 

 thick, folded inwards on each side ; the margin is fringed with 

 numerous cirri or tentacles, which are closely and finely ciliated ; 

 they are of different sizes, encircled by flake-white rings, and 

 arranged in 2 or 3 rows on each side ; the outermost row con- 

 tains some of the largest size, which curl at their tips and are 

 mostly of a yellow colour ; under this row are placed the 

 " eyes " or ocelli, about 50 on each side ; these are of different 

 sizes, not arranged symmetrically, and black, with a bright 

 silvery pupil or nucleus in the centre. 



F. Ireland and Italy. E. Loffoden I., 300 f. (Sars). 



Tar. Dumasii. BODY greyish, irregularly streaked length- 

 wise with dark brown and red, and closely speckled with yel- 

 lowish-white : mantle thick and folded inwards ; edges marked 



