REPORT ON THE FORAMINIFERA. 
185 
Articulina conico-articidata, Batsch, sp. (PI. XII. figs. 17, 18 ; PI. XIII. figs. 1, 2). 
Nautilus (Orthoceras) conico-articulutus, Batsch, 1791, Conchyl. del Seesandes, p. 3, pi. iii. fig. 11. 
Articulina nitida, d’Orbigny, 1826, Ann. Sci. Nat., vol. vii. p. 300, No. 1 — Modele, No. 22. 
Vertebralina conico-articulata, Parker, Jones, and Brady, 1865, Ann. and Mag. Nat. Hist., ser. 3, 
vol. xvi. p. 22, pi. i. fig. 2. 
Vertebralina ( Articulina ) elongata , Karrer, 1868, Sitzungsb. d. k. Ak. Wiss. Wien, vol. lviii. 
p. 155, pL iii. fig. 10. 
There appears at first sight a wide distinction between the shells represented in 
PI. XII. fig. 17 and PI. XIII. fig. 1, but it is in reality little more than a difference in 
the number of linear segments, unaccompanied by any change of morphological characters ; 
and the comparative frequency of intermediate specimens leaves no doubt that they 
both belong to the same species. It is rare to find the Dentalina- like form of so great 
a length relatively as the latter figure ; but the number of chambers, whether two or three 
more or less, is nothing more than an individual peculiarity. Referring to published 
illustrations, Batsch’s figure of Nautilus conico-articulatus, d’Orbigny’s model of Arti- 
culina nitida , and Karrer’s drawing of Vertebralina elongata, all contribute to the 
series of connecting links between the longer and shorter varieties of the species. The 
cylindrical contour and discrete segments of the linear portion of the shell, together with 
the rounded and bordered orifice, serve to distinguish Articulina conico-articidata from 
the other members of the genus. 
The geographical distribution of Articidina conico-articulata is very similar to that 
of Vertebralina striata. It is at home in the seas of warm latitudes, especially amongst 
coral-sands, and is scarcely to be met with north of the Mediterranean. Its bathymetrical 
range is somewhat greater than that of the Vertebralince, and extends to 400 or 500 
fathoms in the West Indies, and to an even greater depth in the Mediterranean, but in the 
latter case the specimens are poor and small. 
The geological history of the species goes back to near the beginning of the Tertiary 
epoch. The habitat originally given by d’Orbigny was the Tertiary beds of the neighbour- 
hood of Paris ; Parker and Jones record its occurrence in a marl of Eocene age at Baljik 
in Bulgaria, and Karrer’s specimens were from the Miocene of Kostej in the Banat. 
Articidina funalis, n. sp. (PI. XIII. figs. 6-11) 
Test elongate, cylindrical, somewhat tapering Milioline segments few and small, 
forming collectively a little inflated or bulbous projection at the narrower end of the shell; 
linear portion very long, more or less arched or irregularly bent, composed of numerous 
segments combined so as to leave no external constriction at the sutures ; segments cylin- 
drical, gradually increasing in diameter, variable in length. Shell delicately thin, opal 
escent in young specimens ; surface ornamented by fine, parallel, longitudinal striae. 
Aperture simple, formed of the open, or only slightly constricted end of the terminal 
chamber. Length, nearly y^tli inch (2’4 mm.). 
