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- 

 minifera commonly met with present towards each other. 



Hyaline {and sometimes arenaceous). 



Lagena 



Nodosaria 

 Lingulina 



Frondicularia 



Dentalina 



Vaginulina 



Entosalenia 



Polymorphina 



Spirillina 



Rotalia 

 Amphistegina 

 Heterostegina 

 Numiuulina 



Opeiculina 



Nonioniua 



Polystomella 



Cristellaiia 



Flabellina 



Hauerina 

 Vertebralina 

 Sphseroidina & 

 Dimorphina 



Miliola (Bi- 

 loculina, 



Triloculina, 



Quiuquelo- 

 culina,&c.) 



Fabularia 

 Amorphina, 



(Parker, MS.) 

 Alveolina 

 Orbitolites and 



Polytripa 

 Orbiculina 

 Peneroplis 



Placopsiliiia 



\_Noie. — 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 dredginars. 



Homogeneous {and 

 sometimes arenaceotis) . 



1 Monotha ■ 



Cornuspiraj' lamous. 



Globigerina 



Rosalina 



Anomalina 



Truncatulina 



Cassidulina 



Valvulina & 



Clavulina 



Bulimina 

 Uvigerina 



Verneuilina 



l^extularia & 

 Bigenerina 



1. Lagena lavis, Walker and Montagu. PI. XI. figs. 22 & 23. 



Var. striata*. PI. XI. fig. 24. 



2. Entosahnia globosa, Montagu, sp. PI. XL figs. 25-29. 



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



Var. striata. PL XL fig. 27. 



Var. catenulataf. PL XL fig. 26. 



Var. squamosa. PL 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 Lagence supply five species 

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

 t Oolina Melo, JD'Orb. ib. f. !). 



1 



