GOES: FORAMINIFERA. 55 
2. C. vortex Fıonr. & Morr, 
Nautilus vortex Fıcur. & Morr., 1803, Test. Micr., p. 83, Pl. II. Figs. d-i. 
C. vortex, orbicularis, Br., Chall. Rep., IX. pp. 548, Pl. LXIX. Figs. 14-17. 
Differs from the type only by its narrower and more bent chambers. 
Robul. orbicularis, imperatoria, and Soldanii D'ORB,, cannot reasonably 
be differentiated from this form. 
Caribbean Sea, 130 fathoms ; scarce. 
C. gibba v'Orn. 
C. spectabilis Reuss, Deutsch. Septarienthon, Wien. Ak. Dkschr., XXV., p. 141, 
Pl. III. Figs. 9, 10. 
C. gibba OR,, 1839, For. Cuba, p. 40, Pl. VII. Figs. 20, 21. 
C. galeata Russ, 1851, Septar. Thon. Berlin (partly), Zeitschr. deut. geol. Ge- 
sellsch., p. 66, Pl. IV. Fig. 20. 
C. gibba BR., 1884, Chall. Rep., IX. p. 046, Pl. LXIX. Figs. 8, 9. 
C. gibba Gois, 1894, Sv. Vet. Ak. Hdl, XXV. 9, p. 01, Pl. X. Figs. 587-592 (alata 
passing into C. nitida D'ORB.). 
The more oval form of C. rotulata, with the last segment somewhat produced, 
seems to bea link between the type and C. erepidula Fromm. & Moun. It is 
sometimes more flattened and has often received new names, 
Pacific. 1132 fathoms ; Scarce. 
Caribbean Sea, 210 fathoms; scarce. 
C. cassis var. marginata D'ORB. 
Plate V. Figs, 13, 14. 
It is by no means easy to give a natural and true systematie review of all the 
lineate, papillate, or beaded, and at the same time of the cultrate and rowelled 
forms of Cristellaria, the beads and their distribution over the shell surface, 
and of the lines yielding such fiekle characteristics that they cannot prove as 
satisfactory for a specific or subspecific determination. According to the differ- 
ent authors a scheme for such a review should assume this appearance : 一 
I. Neither lineolate nor costate forms : 
A. No beads: = C. calcar LIN. (partly), Nautil. calcar Fromm. & Morr., 
1803, var. a, 0, e, u, Pl. XI. Figs. a-c, Pl. XII. Figs, i, £, Pl. XIII. Figs. 
c, d, h, i; Rob. calcar v'Orn,, 1 846, Bass. tert. Vienne, p. 99, Pl. TV. Figs. 
18-20; Hob. aculeata, radiata, pulchella, rosacea, rotunda, levigata D'ORB., 
1826, Tab. Méth., An, Sc. Nat., VII. pp. 288-290. 
D. Deaded. 
a. Sutures and sometimes the centrum. beaded : Naut. calcar var. y, 8, ı 
Ficat. & Mort., 1803, Pl. XI. Figs, g-k, Pl. XIII. Figs. a,b; Maut. 
papillosus, F. & M., 1803, Pl. XIV. Figs. a-c; Brapy, 1884, Chall. 
Rep., IX. p. 563, Pl. LXX. Fig. 16; Crist. papillosa FORNASINI, 1894, 
For. Marne Messinesi, Mem, R. Ace. Se, Istituto Bologna (5.), IV. Pl. 
Ill. Figs. 29-32; Rob. gutticostata GÚMB., 1868, Nordalp. Eocán, K. 
