200 THE VOYAGE OF H.M.S. CHALLENGER. 



Arc(( (Barbatia) fusca, Bruguiere. 



Arcafusca, Bruguifere, Ency. M^th., Vers., vol. i. p. 102. 

 Area fusca, Reeve, Conch. Icon., vol. ii. pi. xii. fig. 82. 



Habitat. — Kandavu, Fiji Islands. 



This species has been already recorded lioni the Mauritius, the Seychelles, and a few 

 other localities in the Indian Ocean, and is also found on the northern and western 

 shores of Australia. 



Area (Barbatia) fasciata, Reeve. 



Area fasciata, Reeve, Conch. Icon., vol. ii. pi. xv. fig. 99. 

 Barbatia fasciata, Aiigas, Proc. Zool. Soc. Lond., 1867, p. 931. 



Habitat. — Port Jackson, New South Wales, in 2 to 10 fathoms. 



The ligamental area is very deeply channelled in this species, which at times attains 

 a length of 2 inches. 



Area (Barbatia) lima, Reeve. 



Area lima, Reeve, Conch. Icon., vol ii. jil. xv. fig. 101. 



Habitat. — Station 208, off the Island of Luzon, Pliilijjpines, in 18 fathoms ; and 

 Station 186, off Cape York, North Australia, in 8 fiithoms (Challenger); Islands of 

 Burias and Corrigidor, Philipj^ines, under stones at low water (Cuming). 



This species is more inequilateral than Area fasciata from the New South Wales 

 coast, and is not " light brown, stained with brown, and spotted with brown " as stated 

 by Reeve, but is totally white both within and without beneath the epidermis ; that 

 species, on the contrary, being, for the most part, with the exception of a very broad 

 triangular space down the central portion of the valves, stained with a rich brown tint, 

 which is most conspicuous within the valves. The three small specimens from the 

 above locality show that this species (like several others), in the earlier stages, has the 

 posterior side more concave than when adult. 



Area (Barbatia) raJula, A. Adams (PI. XVII. tigs. 3—36). 



Area radula, A. Adams, MS. in Coll. Cuming. 



Testa transversa, convexa, iua3(|uilateralis, antice rotundata, postice oblique curvatim 

 truncata, albidn, plus minusve fusco tinctn, liris radiantibus tenuibus confertis, minute 



