No. 2314. 



LIST OF RECENT BRACHIOPODA—DALL. 



325 



Cat. No. 



110961 

 173617 

 173616 

 173611 

 173612 

 173619 

 173613 

 173610 

 173615 

 173614 

 173618 



Locality. 



Dublin Bay, 18 fathoms 



Larne, Ireland 



Island of Jersey, low water 



Island of Jersey 



Island of Jersey 



Island of Guernsey, 20 fathoms 



British Channel 



County Antrim, Ireland, 25 fathoms. . . 



Port Ilush, Antrim, Ireland 



Belfast Bay, Ireland 



Fig'd. Brit. Conch., vol. 5, pi. 19, fig. 5 



Collector. 



Jeffreys . . 

 Jeffreys . . 

 Duprey. . 

 Duprey... 

 Duprey. . 

 Jeffreys... 



France 



Jeffreys... 



Waller 



Hyndman 

 Jeffreys . . 



Number 

 of speci- 

 meii.s. 



2 



14 



40 



24 



6 



12 



7 



3 



1 



1 



4 



Much discussion over this minute species has been had, especially 

 as to whether it is a mature shell. It probably is in a permanently 

 immature stage. Most of the specimens do not show any loop, but 

 I have opened several of the larger ones which had a distinct loop 

 with its lower edge cemented to the valve. I think the species is 

 sufficiently distinct, though very near to A. cistellula. 



Genus ARGYROTHECA Dall. 



Cistella Gray, Cat. Brit. Mus., p. 114, 1853.— H. and A. Adams, Gen. Rec. Moll., 

 vol. 2, p. 581, 1858.— Dall, Bull. Mus. Comp. Zool., vol. 3, No. 1, p. 19, 1871. 

 Not Cistella Gistel, Naturg., p. XI, 1848. 



Argyroiheca Dall, Nautilus, vol. 14, No. 4, Aug., 1900, p. 44.— J. Allan Thomson, 

 Austr. Antarctic Exp., Brachiopoda, p. 6, 1918. 



T^jpe. — Terelratula cuneata Risso, 1826. 



ARGYROTHECA CISTELLULA S. Wood. 



Terehraiula cistellula S. Wood, Ann. Mag. Nat. Hist., ser. 1, vol. 6, p. 253, 1841.— 



Reeve, Conch. Icon., Terebratula, pi. 10, fig. 46, 1861. 

 Argiope cistellula S. Wood, Suppl. Crag. Moll., p. 170, pi. 11, figs. 4 a-d, 1874.— 

 ^ Jeffreys, Brit. Conch., vol. 2, p. 19, pi. 1, fig. 2, 1863; vol. 5, p. 164, pi. 19, 



fig. 4, 1869. 

 Cistella cistellula Gray, Brit. Mus. Cat. Brach., p. 114, 1853.— Dall, Amer. 



Joum. Conch., vol. 6, p. 146, 1870; Proc. Acad. Nat. Sci. Phila., for 1873, 



p. 194.— Davidson, Men. Rec. Brach., pt. 2, p. 139, pi. 22, figs. 1-4, 1887. 

 Megathyris cistellula Forbes and Hanley, Brit. Moll., vol. 2, p. 361, pi. 57, 

 ' fig. 9, 1850. 



Type locality. — Fossil in Pliocene of Britain and recent off County 

 Antrim, Ireland, Jeffreys. 



