118 Rev. A. M. Norman on the Genera and 



1839. Luidia fragilissima, Forbes, Mem. Wern. Soc. vol. viii. p. 123 

 (partly), but not woodcut. 



1841. Luidia fragilissima, Forbes, Brit. Starfishes, p. 135 and woodcut. 



1842. Luidia Savignii, Midler & Troschel, Syst. der Asteriden, p. 77- 

 1857. Luidia Savignii, Sars, Middlehavets Littoral Fauna, p. 100. 



Seven-rayed, 1-2 feet in diameter. Spines bordering on the 

 ambulacra in two rows, the inner slightly arched, the outer 

 nearly twice as stout and long as the inner. Exterior to 

 these a row of broadly triangular tumid pedicellarise and re- 

 spiratory pores alternating with each other. 



Luidia Savignii is found in the Mediterranean and thence to 

 the seas of Scandinavia. On our own coasts it seems widely 

 distributed, occurring here and there all round Great Britain. 

 We have either taken or seen it from Polperro (Mr. Laughrin) ; 

 Clyde, Hebrides, and Shetland [A. M. N.) ; and Redcar, in York- 

 shire (Mr. Ferguson). Other habitats will be found recorded in 

 Professor Forbes's work. 



Most deservedly is this species named after M. Savigny. His 

 figure in the ' Histoire de l'Egypte ' is a marvellous example of 

 the perfection to which the engraving of objects of natural his- 

 tory can be carried. It is a masterpiece. Drawn life-size on a 

 folio plate, the minutest details — each paxilla and each spine — 

 have been elaborated with wonderful skill ; yet nothing is over- 

 drawn or exaggerated. Nature has been, as it were, photo- 

 graphed — and that, too, before photography was discovered — by 

 the artist on his plate. 



Luidia Sarsii, Diiben & Koren. 



1839. Luidia fragilissima, Forbes, Mem. Wern. Soc. vol. viii. p. 123 (partly) 



and woodcut. 

 1841. Luidia fragilissima, Forbes, Brit. Starfishes, p. 135 (partly), but not 



woodcut. 

 1844. Luidia Sarsii, Diiben & Koren, Oversigt af Kong. Vet. Akad. Forh. 



p. 113. 

 1844. Luidia Savignii, Diiben & Koren, Skand. Echin. p. 254, pi. viii. 



figs. 23, 24. 

 1857. Ludia Sarsii, Sars, Middlehavets Littoral Fauna, p. 102. 



Five-rayed, rarely exceeding 6 inches in diameter. Spines 

 bordering on the ambulacra in three rows, the inner much 

 curved and flattened at the tip ; the middle a little longer, 

 thicker, and straighter; the outer straight, equalling the 

 inner row in length. Exterior to these a row of narrowly tri- 

 angular pedicellarise and respiratory pores alternating with 

 each other. 



Apparently of more northern range than the last. It has been 

 met with in Norway ; and has been taken by myself in Shetland, 

 and traced thence along the eastern coast of Great Britain as far 

 south as Yorkshire. There is no record of a western or southern 



