No. 2314. 



LIST OF REGENT BRACHIOPODA—DALL. 



297 



The earliest name for the Mediterranean form is emarginata of 

 Risso, but the bilobate form is not peculiar to Mediterranean speci- 

 mens. There are in the Jeffreys collection numerous specimens of 

 retusa with this character, and in fact bilobation seems to occur in 

 almost any of the less inflated strongly striated species of the genus as 

 a mutation. The varieties angustata and graruiis of Jeffreys seem to 

 me mere mutations of form, without special significance. On the 

 other hand T. septentrionalis and T. unguicula, which have been 

 frequently treated as varieties of T. retusa, are positively established 

 as distinct species by Blochmann on the basis of their spiculation 

 although it is often extremely difficult to separate them merely on 

 the basis of the shells. 



TEREBRATULINA SEPTENTRIONALIS Couthouy. 



Terebratula septentrionalis Couthouy, Boston Joum. Nat. Hist., vol 2, p. 65, pi. 3, 

 fig. 18, 1838.— SowERBY, Thesaurus, Terebratula, p. 344, pi. 68, fig. 18, 1847. 



Terebratula caputserpentu Gould, Inv. Mass., p. 141, 1841. — Reeve, Conch. Icon., 

 Terebratula, pi. 4, text only, 1860; not of authors. 



Terebraiulina septentrionalis Stimpson, Checklist of Sh. of N Am. East Coast, p. 2, 

 No. 61, 1860; Binney's Gould's Inv. Mass., p. 208, fig. 500, 1870.— Davidson, 

 Mon. Rec. Brach., pt. 1, p. 28, pi. 5, figs. 1-31, 43-52, 1886. 



Cat. No. 



274155 



173559 



173638 



173532 



173544 



49300 



203033 



110866 



110864 



110865 



49301 



49311 



49315 



153526 



153539 



49318 



203038 



203036 



49309 



49312 



49314 



49319 



49320 



49273 



203037 



110874 



151751 



27541 



49271 



49272 



153523 



49270 



73276 



110868 



Locality. 



Finmark 



Vadso, Norway 



Vadso, Norway 



Loch Duich, Scotland 



Station 6 



Off Cape Sable, Nova Scotia 



Off Cape Sable, Nova Scotia 



Le Have Bank, Nova Scotia, 150 fathoms. 

 Nova Scotia, 60 fathoms. 



Collector. 



Jeffreys 



G. O. Sars.... 



G. O. Sars 



Jeffreys 



Valorous Exp. 



B. F 



B. F 



Olsen 



Proctor 



Nova Scotia 1 Steams. 



Nova Scotia, 59 fathoms 



Nova Scotia, 47 fathoms 



Nova Scotia, 42 fathoms 



Bedford Basin, Nova Scotia, 33-40 fathoms. .. 



Near Halifax, Nova Scotia, 127 fathoms 



Halifax, Nova Scotia 43 fathoms 



Halifax, Nova Scotia, 20 fathoms 



Off Halifax, Nova Scotia, 16 fathoms 



Ofl Halifax, Nova Scotia, 1 6 fathoms 



Off Halifax, Nova Scotia, 43 fathoms 



Off Halifax, Nova Scotia, 42 fathoms 



Off Halifax, Nova Scotia 



Off Halifax, Nova Scotia, 51 fathoms 



Bay of Fundy, Nova Scotia 



Bay of Fundy, Nova Scotia, 40-55 fathoms 



Grand Banks 



Grand Banks, 150 fathoms 



Grand Manan Island, Maine 



Grand Manan Island, Maine 



Grand Manan Island, Maine 



Grand Manan Island, Maine, 28-52 fathoms.. . 



Eastport, Maine 



Eastport, Maine 



Eastport, Maine 



B. F. 

 B. F. 

 B. F. 

 B. F. 

 B. F. 

 B. F. 

 B. F. 

 B. F. 

 B. F. 

 B. F. 

 B. 



F 



B. F 



B. F 



B. F 



B. F 



Stimpson. 

 Stimpson. 

 Stimpson. 



B. F 



B. F 



B. F 



B. F 



Stimpson. 

 Stimpson. 



Number 

 of speci- 

 mens. 



17 

 1 

 1 

 6 

 1 

 4 

 1 

 1 

 3 

 2 



1 

 8 

 1 

 4 

 1 

 2 

 1 

 3 



1 V. 



1 



2 



4 



2 



2 



5 



1 



1 



6 



6 



14 



5 



Many. 



10 



5 V. 



