GORS: FORAMINIFERA. 89 
V. conico-articulata Gois (partly), Ret. Rhizop. Caribb. Sea, Sv. Vet. Ak. Hdl., XIX, 
4, p. 121, Fl. IX. Fig. 817, 817 ö. 
Articulina conico-articulata Br., 1884, Chall. Rep., IX. p. 185, Pl. XII. Figs. 17, 18 
Pl, XIII. Figs, 1,2, 
Is often met with in a pygmy form. There is no need to separate those 
forms of this family which have a narrow linear build from those which have a 
more flattened outspread form ; the former were by d'Orbigny distinguished as 
Artieuline, the latter as Vertebraline; the former should have milioline, the 
latter hauerine origin. 
Caribbean Sea. 300 fathoms (Goés). 
, 
V. Sagra p'Onn. 
Articulina Sagra n'Onn., 1839, Cuba, p. 183, PL IX, Figs. 28-26 (more narrow). 
Vertebralina cassis, mucronata, Ibid. pp. 51, 52, Pl. VII. Figs. 14-19 (broader). 
Vertebral. conico-articulata Goiis ( partly), 1882, Ret. Rhizop. Caribb, Sea, Sv. Vet. Ak, 
Hdl., XIX. 4, p. 121, Pl. IX. Figs. 311-816. 
Articulina Sagra Br., 1884, Chall. Rep, IX. p. 184, PI. XII. Figs. 22-24. 
Attains somewhat higher development and varies highly in the relation be- 
tween length and breadth. The larval stage is often smooth. 
Caribbean Sea. 300 fathoms (Goés). 
ORBICULINA »'Ons. 
O. adunca Ficur & Morr. 
Nautilus aduncus, orbiculus, angulatus F. & M., 1808, Test. Microsc., Pl. XXL-XXIIL 
O. numismalis D'ORB., 1826, Tab. Méth., An. Sc. Nat., VII. p. 305, No. 1. Pl. XVIL 
Figs. 8-10. 
O. adunca Br., 1884, Chall. Rep., IX. p. 209, Pl. XIV. Figs. 1-13. 
Attains comparatively large dimensions in the Caribbean Sea, where it is a 
very common shallow-water form. Orbiculina is only an evolutionary stage 
between Peneroplis and Orbitolites, and keeps about the same position as Trilocu- 
lina on one side to Quinqueloculina and on the other side to Biloculina, 
Caribbean Sea. 10-300 fathoms; common. 
ORBITOLITES. 
O. marginalis Lucr. 
Orbulites marginalis (Lmck., 1816), CARPENTER, 1856, Monogr. Gen. Orbitolites 
marg., Philos. Transact., CXLVI. p. 192, Pl. IX. Figs. 1, etc. 
O. marginalis Br., 1884, Chall. Rep., IX. p. 214, Pl. XV. Figs. 1-5, 
Has about the same range of distribution as the preceding, of which it may 
be considered as a megalaspheric form. 
Caribbean Sea, with the preceding. 
