300 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



voii. 57. 



This species can generally be distinguished from T. retusa by its 

 finer sculpture and more oval form, but varieties approach one 

 another very closely so far as external aspect is concerned. The usual 

 mutations of form occur very often. This species is subject to the 

 (commensal ?) growth of a sponge which when young appears like a 

 normal pubescence, as in T. retusa, but when full grown becomes a 

 spongy ball in which the brachiopod is enthely concealed. 



The north European specimens appear to be correctly identified, 

 but their spicules have not been examined. 



TEREBRATULINA UNGLICLLA Carpenter. 



Tertbratula unguicula Carpenter, Proc. Zool. Soc, 1865, p. 201, figs. 1-4. 

 Terebratulina unguicula DALL,Cat. Rec. Brach., Proc. Acad. Nat. Sci. J hila. for 



1873, p. 177; 1877, p. 156. 

 Terebratulina capulserpentis var. ungicula Davidson, Mon. Rec. Brach., pt. 1, 



p. 25, 1886.— Dall, Proc. U. S. Nat. Mue., vol. 17, No. 1032, p. 719, pi. 32, 



figs. 2, 5, 1895. 



T)/pe locality. — Monterey, California. Doctor Cooper. 



Gat. No. 



Locality. 



15264 

 224264 

 224370 

 224282 

 130518 

 224281 

 206729 

 204672 

 212823 

 123152 

 212826 

 222289 

 222290 

 110893 

 110888 

 123155 

 224004 

 222271 

 222272 

 212824 

 206508 

 224009 

 212820 

 110890 

 110889 

 222223 

 222595 

 222204 

 224578 

 228762 

 222397 

 222181 

 222159 

 224443 



55820 

 226049 



Monterey, California (cotype) 20 fathoms 



Off Pribilcf Islands. Alaska, 150 fathoms 



Off Pribilcf Islands, Alaska, 150 fathoms 



Off Pribilof Islands. Alaska, 121 fathoms 



Off Pribilof Islands, Alaska, 121 fathoms ., 



Off Pribilof Islands, Alaska, 121 fathoms 



Off Pribilof Islands, Alaska, 142 fathoms 



Off Avacha Bay, 682 fathoms 



West of Unalaska, Alaska, 576 fms 



North of Unalaska, Alaska, 351 fathoms 



North of Unalaska, Alaska, 350 fathoms 



North of Unalaska, Alaska, 309 fathoms 



North of Unalaska, Alaska, 309 fathoms 



Harbor of Unalaska, 80 fathoms 



Bay of Unalaska, Alaska, 60 fathoms 



Iliuliuk Harbor, Alaska, 85 fathoms 



Ridge, Unalaska, Alaska, 60 fathoms 



Captains Bay, Unalaska, 85 fathoms 



Captains Bay, Unalaska, 85 fathoms 



Captains Bay, Unalaska, 85 fathoms 



South of Unimak Island, Alaska, 61 fathoms. . 

 South of Unimak Island, Alaska. 61 fathoms.. 

 South of Unimak Island, Alaska, 61 fathoms.. 



Off Nagai Island, Alaska, 75 fathoms 



Pirate Cove, Alaska 



Chignik Bay, Alaska, 42 fathoms 



Chignik Bay, Alaska, 60 fathoms 



Chignik Bay, Alaska, 28 fathoms 



Southeast of Alaska Peninsula, 110 fathoms. . . 

 Southeast of Alaska, Peninsula, 58 fathoms . . . 



Southeast of Alaska Peninsula, 68 fathoms 



Shelikoff Strait, Alaska, 56 fathoms 



Afognak Bay, Alaska, 16 fathoms 



Kodiak Islands, Alaska 



Kodiak Islands, Alaska 



Uyak Bay, 66 fathoms 



