COASTS VISITED BY THE ARCTIC EXPEDITION. 629 



Spirifera, sp., allied to S. lamellosa (M'Coy). 



Cyrtia lamellosa,M. < Coy 9 Syn. Carb. Foss. Ireland, p. 137, t.21. f. 4. 



Spirifera lamellosa, Dav. Mon. Brit. Carb. Brachiopoda, Pal. Soc. 

 p. 36, t. 7. f. 17-22. 



This shell (only one specimen) closely resembles M'Coy's species, 

 to which I refer it. Our specimen does not satisfactorily show the 

 scale-like imbricated laminse owing to the surface being much 

 denuded. The Spirifera hysterica, De Kon., and Spirifera speciosa 

 (M'Coy), are, without much doubt, the same as our Arctic form. "We 

 regret having to record only one specimen of this species. 



Log. Feilden Isthmus, lat. 82° 43'. 



Spirieera ovalis, Phill. 



Spirifera ovalis, Phill. Geol. York. vol. ii. p. 219, 1. 10. f . 5 ; Dav. 

 Monogr. Carb. Brach., Pal. Soc. p. 53, t. 9. f. 20-26. 



This is an abundant shell at Feilden Isthmus, and one of the best 

 defined species in the collection. Though it greatly resembles many 

 forms of Spirifera pinguis, Sow., the deep and gibbous ventral valve 

 and shallow sinus near the beak or umbo, as well as the short and 

 small hinge-area, well characterize this shell. This species seems 

 cosmopolitan, ranging from Belgium to Iowa ; it is common to Eng- 

 land, Scotland, and Ireland. It was not collected by M'Clintock 

 during the voyage in search of Franklin, although much Carboni- 

 ferous country was then passed over. It is one of the abundant 

 shells in the collections of the jSTares expedition. 



Loc. Feilden Isthmus, lat. 82° 43'. 



Genus Spirieerina *, D'Orbigny, 1847. 



Spirieerixa cristata (Schloth.) (? var. S. octoplicata, Sow.). 



Spiriferina cristata (Schloth.) ; Dav. Monogr. Brit. Carb. Brach., 

 Pal. Soc. p. 38, t. 7. f. 37-47; ib. p. 226, t. 52. f. 9, 10. 



Only one specimen of this variable species has occurred in the 

 'Alert' collection. It has the nearest affinity to this of any Spiri- 

 ferina known to me ; one specimen, however, is scarcely reliable in 

 so varying a group as the Spiriferidse. 



Loc. Cape Joseph Henry, lat. 82° 43'. 



Genus Producttjs, Sowerby, 1814. 

 Prodfcttjs semireticulatus (Martin). 



Anomites semireticulatus, Mart. Petrif. Derb. p. 7, t. xxxii. f. 1, 2. 



Procluctus scoticus, Sow. Min. Con. t. 69. f. 3. 



P. sulcatus, Sow. I. c. t. 319. f. 2. 



P. semireticulatus, Dav. Monogr. Brit. Carb. Brachiopoda, Pal. Soc. 

 p. 149, t. 43. f. 1-11, t. 44. f. 1-4. 



* The canals or perforations in the shells composing this genus, as well as 

 the large elevated mesial septum in the ventral valve, separate it from 

 Spirifera. 



