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



on the Norwegian specimens, we append an avowedly imperfect, 

 but perhaps useful, list of genera and subgenera, showing ap- 

 proximately the more evident of the relations which the Fora- 

 tninifera commonly met with present towards each other. 



Hyaline {and sometimes arenaceous). 



Lagena 



Nodosaria 

 Lingulina 



Frondicularia 



DentaUna 

 Vaginiilina 



Entosalenia 



Polymorpliina 



Spirillina 



Rotalia 

 Amphistegina 

 Heterostegina 

 Nummulina 



Operculina 



Nonionina 



Polystomella 



Cristellaria 



Flabellina 



Orbulina 



Homogeneous (and 

 sometimes arenaceous). 



}Monotha ■ 

 lamous. 



Globigerina 



Rosalina 



Anomalina 



Truncatulina 



Cassidulina 



Valvulina & 



Clavulina 



Bulimina 

 Uvigerina 



Verneuilina 



Textularia & 



Bigenerina 



Hauerina 

 Vertebralina 

 Sphseroidina & 

 Dimorphina 



Miliola (Bi- 

 loculina, 



Triloculina, 



Quinquelo- 

 culina,&c.) 



Fabularia 

 Amorphina, 



(Parker, MS.) 

 Alveolina 

 Orbitolites and 



Polytripa 

 Orbiculina 

 Peneroplis 



Placopsilina 



^Note. — The genera and subgenera printed in small type are inserted as important 

 members of the series, but do not occur among the specimens from the Norway 

 coast.] 



We have to express our acknowledgements for Prof. William- 

 son's kindness in giving us his opinion on the relations of the 

 more important of the Norwegian specimens. Our thanks also 

 are due to Prof. Tennant for having lent us his set of D'Orbigny's 

 valuable models, without the free use of which we could not 

 have satisfactorily determined the alliances of several species 

 from the dredgings. 



1, Lagena Icsvis, Walker and Montagu. PI. XL figs. 22 & 23. 



Var. striata^. PI. XI. fig. 24. 



2. Entosalenia globosa, Montagu, sp. PI. XI. figs. 25-29. 



Var. marginata. PI. XI. figs. 28 & 29. 

 Var. striata. PL XI. fig. 27. 

 Var. catenulataf. PI. XI. fig. 26. 

 Var. squamosa. PI. XL fig. 25. 

 [See Mr. Williamson's Monograph on the " Recent British 

 Species of the genus Lagena/* Annals of Nat. Hist. ser. 2. vol. i. 

 pp. 1-20, pi. 1 & 2.] 



Figs. 22 to 29 represent a series of forms of minute mono- 



* The striated varieties of the flask-shaped Lagena supply five species 

 in D'Orbigny's Voyage Amer. Merid. vol. v. part 5. pi. 6. f. 4-12. 

 t Oolina Melo, D'Orb. ih. f. 9. 



