EEPOET ON THE BEACHIOPODA. 



23 



30 to 43 



30 to 300 



60 



650 to 1750 



10 to 690 



{t)CisieJhi schrammi, var. (i) riihrotinda, Dal], Biill. Mus. 

 Comp. Zool., vol. i. c. p. 19, pi. i. fig. 6, a, 1871. 



Genus Thecidium, Defiance. 



Theddium mediterraneum, Eisso, Fauna Europ. Merid., [ 

 p. 394, fig. 1S3, 1826 = T. spondylea, Scacchi. This 

 is a very common shell. 



Theddium harretti, Woodward, Geol. Mag., vol. i. pi. ii. 

 figs. 1-3, 1864. This is rare, and very remarkable — 

 tu'o examples only are knoA^Ti. The types are in the 

 Cambridge Museum, and in my oivn collection. 



Tortugas. 



African Coast of Mediter- 

 ranean ; ofi' Province of 

 Oreq, near Calle and Con- 

 stantine, chiefly attached to 

 corals at depths from 60 to 

 120 fathoms. North coast 

 of Jamaica, 150 fms. (Bar- 

 rett); Mauritius (?). Fossil: 

 Upper Tertiaries, North 

 and South of Italy ; SicHy. 



North-East coast of Jamaica 

 (coral reefs) (Barrett). Fos- 

 sil: Upper Tertiaries, 

 Jamaica. 



Genus Atretia, Jeffreys. 

 Two short curved processes ; an elevated mesial septum in dorsal valve. 



Atretia gnomon, Jeffreys, Annals and Mag. of Nat. Hist., 

 1876, and Proc. Zool. Soc, 1878, p. 412, pi. xxiii. 

 fig. 4. An uncommon and brittle minute shell, but 

 seemingly well characterised. 



North Atlantic; Davis Strait; 

 off Coast of Fuamark, about 

 30 miles west of Tromso; 

 Coast of Ireland (Jeffreys 

 and Friele). 



Genus Rhynclionella, Fischer. 

 Two short curved jsrocesses ; rudimentary septum in dorsal valve. 



Rliynehonella psittaeea, Gnielin, Syst. Nat., 3348 = 

 Rhynclionella xooodwardi (A. Adam.s), Annals and Mag. 

 of Nat. Hist., 3d ser., vol. xi. p. 100, 1863 (Japan). 



Circumpolar, inhabits Frank- 

 lin-Pierse Bay, lat 79° 25' 

 N., in 15 fms.; Cape 

 Napoleon, 25 fms. (Fieklen 

 Arctic Exp. 1875); Norway; 

 Shetland ; Grand Greve, 

 Gaspay Bay, Canada East ; 

 Unalashka to Shumargins in 

 the Aleutian Chain ; Banks 

 of St Margaret Bay ; Dron- 

 theimtoCape; Eussian Lap- 

 land to Sitka ; from Behring 

 Strait to Japan in North 

 Pacific, i^bs^'/?.' Upper Ter- 

 tiaries, Great Britain; Ire- 

 land; Scandinavia; Canada; 

 Sicily; South of Spain. 



