FAMILY 22. LAGENIDAE 185 



b. Later chambers extending back on both sides. 



(1). Early stages distinctly spiral in both forms. 



Flabellina. 



(2). Early stages spiral usually in microspheric form 



only Frondicularia. 



c. Later chambers inflated, rectilinear Amphicoryne. 



2. Aperture elliptical Lingulina. 



B. Test very little compressed, aperture radiate Marginulina. 



C. Test in later stages triangular in section Saracenaria. 



III. Test with the early stages not coiled. 



A. Chambers multiple. 



1. Not involute. 



a. Sutures oblique, aperture at the peripheral angle. 



Dentalina. 

 h. Sutures directly transverse, aperture terminal, central. 



Nodosaria, 



2. Involute Glandulina. 



B. Chambers single Lagena. 



Subfamily 1. Nodosariinae 

 Test multilocular 



Genus ROBULUS Montfort, 1808 



Plate 24, figures 1, 2; plate 25, figure 1 

 Genoholotype, Robulus cidtratus Montfort 



Robidus Montfort, Conch. Syst., vol. 1, 1808, p. 215, 54th genre. 

 Pho7iemus Montfort, 1. c, p. 11 (genoholotype, "Le phoneme tranchant". 



Natitihis vortex Fichtel and Moll). 

 Pharaanum Montfort, 1. c, p. 35 (genoholotype, "Le Pharame perle". 



Nautilus calcar (part)). 

 Patrocles Montfort, 1. c, p. 219 (genoholotype, Patrocles querelans 



Montfort, Nautilus calcar (part)). 

 Spincterules Montfort, 1. c, p. 223 (genoholotype, Nautilus costatus 



Fichtel and Moll). 

 Herion Montfort, 1. c, p. 231 (genoholotype. Nautilus calcar (part)). 

 Rhinocurus Montfort, 1. c, p. 235 (genoholotype, Rhinocurus araneosus 



Montfort). 

 Lampas Montfort, 1. c, p. 243 (genoholotype. Nautilus calcar (part)). 

 Scortimus Montfort, 1. c, p. 251 (genoholotype, Scortimus navicularis 



Montfort). 

 Linthuris Montfort, 1. c, p. 255 (genoholotype, Linthuris cassidatus 



Montfort, Nautilus cassis (part)). 

 Astacolus (?) Montfort, 1. c, p. 263 (genoholotype, Astacolus crepidii- 



latus Montfort, Nautilus crepidulus Fichtel and Moix.). 



