34 
PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 
bears about fifteen prominent transverse costae, crossed by numerous fine, 
thread-like, spiral lines. There is also a prominent spiral ridge, which is 
just covered by the succeeding whorl and below which the surface bears 
only the spiral lines. Species with similar form of whorl and sculpture are 
common in Anchura, Aporrhais and other genera of this family. 
Tornatell^ea patagonica sp. nov. 
PI. VI, Figs. 1 8 and 19. 
Shell of medium size, ovate, consisting of four or five rapidly increas- 
ing convex whorls, of which the last constitutes about five-sevenths of 
the total height ; apex of spire obtuse, not prominent ; aperture elongate, 
narrow above, rounded and apparently somewhat sinuous or emarginate 
below ; outer lip slightly thickened and smooth within ; inner lip forming 
a moderate callus and bearing two distinct folds, one of which is near the 
lower end and the other below the middle of the aperture ; surface marked 
by rather coarse spiral furrows, of which there are about 25 on the last 
whorl. 
Height of the larger specimen, 14 mm.; breadth, 10 mm.; height of 
aperture, 10 mm.; breadth of aperture, 4 mm. 
The species is represented by only two specimens, both of which are 
figured. Similar forms have frequently been described as Actseon and 
Solidula, but according to Cossmann’s 1 revised descriptions of those groups 
such forms should be referred to Conrad’s genus Tornatellaea, which ranges 
from the lower Jura to the Miocene. 
It should be stated, however, that the types of this species have the 
outer lip and lower part of the aperture broken and the generic reference 
is therefore not absolutely certain. 
Locality and position . — From the Ammonite (Belgrano) beds, ten miles 
east of Lake Pueyrrydon. 
ClNULIA AUSTRALIS Sp. nOV. 
PI. VI, Figs. 16 and 17. 
Shell small, subglobose, consisting of about four convex whorls, of which 
the last forms three-fourths of the total height ; suture slightly impressed ; 
surface marked by numerous inconspicuous, impressed, spiral lines (about 
^ssais de Paleoconchologie comparee, Liv. I, pp. 45-50, Paris, 1895. 
