REPORT ON THE LAMELLIBRANCHIATA. 307 



Pecten sp. 



Habitat. — Station 24, off Culcljia Island, "West Indies, in HDO fatlioms ; Pteropod ooze. 



A few odd valves of a thin subpellucid Pecten were dredged at this Station wLidi 

 appear to belong to an undcscribed species. As they are in rather poor condition, and 

 I am uncertain whether I have correctly paired the valves, or have associated together 

 the right and left valves of two distinct forms, I have refrained from naming them. The 

 right valves are about as convex as the left, and sculptured with very many regular 

 concentric striae. The left valves to a great extent have the sculpture worn oft", but what 

 remains consists of more distant concentric lamellae and radiating thread-like lirse. The 

 auricles are unequal, the anterior being the larger, and that in the right valve has a 

 radiating ridge or two crossed by the lines of growth. The length is 4 mm. and the 

 height about the same. 



Pecten sp. 



Habitat. — Station 24, otfCulebra Island, West Indies, in 390 fathoms ; Pteropod ooze. 



A single right valve only was obtained of this species, which I cannot identify with any 

 as yet known. It is quite flat, glossy, irregularly concentrically waved or plicate, and 

 devoid of any sculpture except upon the front auricle, which has the upper half 

 ornamented with four or five finely squamate lirse. It is 9 mm. in length and 10 in height. 



Pecten {Janira) fumatus, Reeve. 



Pecten fumahis, Eeeve, Coiicli. Icon., vol. viii. pi. vii. fi^. -'i. 

 Void fumata, Angas, Proc. Zool. Soc. Lond., 1867, p. 933. 



Habitat. — Port Jackson, New South Wales, in 2 to 10 and 4 to 1 8 fathoms. 



This species is peculiar for its almost uniform sombre colour. The deep valve is, 

 however, generally somewhat paler towards the umbo, and the flat valve also occasionally 

 exhibits a whitish patch in the same region. The interior is white, especially the convex 

 valve, but stained with burnt brown on the ears and towards the outer margin. The 

 epidermis, principally on the concave valve, is closely concentrically lamellated and 

 somewhat fibrous. 



Pecten {Janira) laqueatus, Sowerb)". 



Pecten laqueatus, Sowerby, Thes. Couch., vol. i. !>. 46, pi. xv. lig. 101. 



Pecten laqueatus, Reeve, Conch. Icon., vol. viii. pi. xxs. fig. 13.5. 



Pecten laqueatus, Lischko, Japan. Meer.-Conch., Theil i. p. 1G7, Theil ii. p. 157. 



Vola laqueata, Dunker, Ind. Moll. Japon., p. 243. 



Pecten antonii, Pliilippi, Abbild., vol. i. p. 99, pi. i. figs, la-lc 



Habitat. — Station 233a, off Kobe, Japan, in 50 fathoms ; blue mud. 



