Prof. T. Rupert Jones — On Swiss Jurassic Foraminif era. 211 



comprise several of them. Figs. 6, 7, and 8 are curious extremes of 

 the moniliform Nodosarice {N. pyrula, etc.). Figs. 20 and 20a show 

 an extremely simple form of Cristellaria, near to Planularia pau- 

 perata. Fig. 22 has its analogue in the Chalk ; and, indeed, all are 

 common, widespread, and persistent varieties. The relatively large 

 fig. 33 is Cristellaria (Planularia) crepidula. 



Fig. 39 {JVonionina Birmenstorfensis) is probably a Planorbulina. 

 Figs. 40 and 40a (Globulina Helvetica) are Polymorphina liasica, 

 Strickland, and an approximate variety. Fig. 41 ( Vulvulina farcimen) 

 is a Virgulina, having the early chambers heaped. Figs. 42 and 43 

 ( Vulv. minutissima and V. Eichhergensis) are loose-grown pouting 

 TextilaricB ; and 43a appears to be a Textilaria of the same habit of 

 growth, but with the normal aperture. Figs. 44-45a are TextilaricB 

 of the common "sagittula" type; and fig. 45a has the not un- 

 common spiral commencement, which gave rise to the quasi-generic 

 name " Spiroplecta." Fig. 46 (OphtTi. Birmenstorfense) is a Spiro- 

 loculine Miliola; 47-49 (Ophth. gracile, medium, et auris) are Quin- 

 queloculine ; and 50 ( OpJith. cornuspir aides) represents the early 

 chambers of a similar Miliola. A Chirota is also figured. 



2. Effing-beds; Impressa-clays {Terehratula impressa) of Quen- 

 stedt. From the Eichberg, Grand Duchy of Baden; Siblingen, 

 Canton Schaflfhausen ; and Baden, Canton Aargau. Pp. 33-36 

 pi. 4, i., figs. 1-17. Lagena 1 ; CornmspirEe 5 ; Frondicularia 1 

 Dentalina 1 ; Vaginulinse 2 ; Cristellarise 6 ; Rotalina 1 ; Rotalia 1 

 Globulina 1 ; Vulvulinae 2 ; Textilariae 2. 



The Lagena is L. Icevis. Of the " Cornuspirae," figs. 2-4 represent 

 Trochammina incerta, and figs. 4a and 4& show passages from the 

 same towards Tr. gordialis. The NodosarincB (figs. 5-13) are 

 common, well-known, variable forms, which have been named again 

 and again. 



Fig. 14 (Botalina Badensis) may possibly be a Planorbulina ;. but 

 far more probably it is a rotaline Lituola [Endothyra). Fig. 15 

 (Rotalia Siblingensis) is not a Rotalia, but probably a Planorbulina. 

 The Globulina is Polymorphina liasica. 



Figs. 16-17a {Vulvulince and TextilaricB) are well-known Texti- 

 laricB, occurring at many other horizons, and already named more 

 than once. 



B. Middle White Jura : Corallian stage : Geissberg-beds (with 

 and without Nulliporites ^), Baden, Canton Aargau. Pp. 36-37 ; 

 pi. 4, ii., figs. 1-3. 



Cornuspira 1 ; Vaginulinse fragments ; Cristellaria 1 ; Eobulina 

 1 ; Nonionina 1 ; Ophthalmidia, fragments. 



The "Cornuspira" is a Trochammina (see pi. 3, fig. 2). The 

 NodosarincB have been previously named and re-named. The "Nonio- 

 nina " is the same as pi. 3, fig. 39, and probably pi. 2, iv., fig. 14, 

 and should be classed with Plauorbulince, being not far removed 

 from PI. ammonoides. 



C. Upper White Jura : Kimmeridgian stage. 1. Astartian forma- 

 tion, Eodersdorf, Canton Solothurn. Pp. 37-38 ; pi. 4, iii., fig. 1. 



Rotalina Moeschii (fig. 1) is relatively large, and probably a 



1 See Geol. Mag., No. 105, p. 122. 



