276 Messrs. W. K. Parker and T. Rupert Jones on some 



between wide limits of size, shape, and ornament, that, for the sake 

 of convenience, these may i-etain for the present the names that 

 have been proposed for them on the supposition of their specific 

 distinctness ; especially as many of the varieties are characteristic 

 of climatal or hydrographical habitat, or of geological range. 



The materials for the following descriptions were derived from 

 the dredgings made by Messrs. MacAndrew and Barrett in the 

 North Sea, during the summer of 1855. One portion was re- 

 ceived from Mr. Barrett, in small boxes, numbered, and labelled 

 with the depths and localities of the dredgings ; another portion 

 was the sandy refuse from a jar in which specimens of Molluscs, 

 &c., had been preserved in spirits, — this we received from Mr. 

 Woodward; and thirdly, Mr. Bowerbank favoured us with a 

 packet of shelly sand obtained when preparing sponges taken in 

 the same dredgings. The latter lots of sand were manipulated 

 and examined together ; and no particular depths and localities 

 have been noted for the specimens derived from this source. The 

 sponge-sand was obtained from several localities between Dront- 

 heim and the North Cape, at depths varying from 30 to200 faths. 



The series of which the exact localities and depths are known 

 comprises seven lots ; these, with their characters and contents, 

 are arranged in the following Table. 



Locality. 



East of Rolfs Oe, 

 or Bred Sound, 

 Finraark 



Omnoes Oe, Nord- 

 land 



West Fjord, Nord- 

 land 



T^ iv •„ Character of 

 ^„?v.L. |sea-bottora, 



Bodoe, Nordlaud 



Vigten Island (In- 

 ner Passage),Dron 



fcheim 



Finmark 



Arctic Circle, Nord 

 land 



Various localities "I 

 between Dront- I 

 heim and the [ 

 North Cape ...J 



30 



1 40 

 1 60 

 70-100 



100 

 160 

 160 



gravel 



gravel -j 

 sand -I 



Generic and Subgeneric forms. 



sand 



on sponge 

 sand 



mud 



30-200 



various<^ 



Polymorphina, Anomalina, Trun- 



catulina, Bilocvdina, Quinquelo- 



cuUna, Placopsilina. 

 Anomalina, Truncatulina, Quin- 



queloculnia. 

 Dentalina,Rosalina, Truncatulina, 



Quin quel oculin a . 

 Anomalina, Truncatulina, Bilo- 



culiua, Quinqueloculina. 



Rosalina. 



Truncatulina, Quinquelocidina. 



Nodosaria, Dentalina, Cristellaria, 

 Anomalina, Truncatulina, Bilo- 

 culina. 



Lagena, Entosalenia, Dentalina, 

 Polymorphina, Spirillina, Oper- 

 culina, Nonionina (5 species), 

 Polystomella, Globigerina, Ro- 

 salina, Anomalina, Truncatulina 

 Cassiduliua, Valvulina, Buhmina 

 Uvigerina, Textularia, Quinque- 

 i_ loculina, Placopsilina. 



