WiLcKENS.—Lahillia and other Fossils from the Upper Senonian. 543 
DENTALIUM L. 
Dentalium cf. morganianum О. Wilck. 
The material contains a Dentalium from locality 22 (Green Island, near 
n 
Dentalium morganianum О. Wilck Sh and growth-lines are the 
same, only there are some extremely slight axial furrows and rounded ribs 
This observation induced me ake a new examination of two specimens 
of Dentalium morganianum still in my hands. І could perceive also in 
these a very few extremely slight furrows; but there is no real axial 
sculpture, as I have already pointed out in the description of the species. 
Locality.—Green Island, near Dunedin (not an island !). One specimen. 
ANNELIDA. 
TusuLosTIUM Stoliczka. 
Tubulostium cf. discoideum Stol. (Plate 54, figs. 8a, 8b.) 
The discoid shell is spirally enrolled. One side seems somewhat more 
concave than the other. Centre of shell not preserved, but only the last 
two whorls. The last is quadrangular in outer section. Ор outer 
riphery it is somewhat concave, and bounded on both sides by a thin 
sharp keel. On both sides the whorl has a spiral marginal arch near outer 
keel, bordered interiorly by a spiral furrow, and a second spiral arch. 
On last third of last whorl are poma radial oe situated at nearly equal 
distances, the middle one slighter than the others. The first and third 
are present also on periphery of shell, but it is only the last which continues 
to its other side. 
The shell was labelled “ Discohelix sp.,’’ but undoubtedly this is no 
Discoheliz, and no gasteropod at all, but an annelid. This can be stated 
from the form of the whorls and the irregular surface of the shell. 
Dimensions.—Height, 2-5 mm.; diameter, 13 mm. 
Locality.—Shag Point, loc. 592. One specimen. 
Affinities.—Tubulostium ornatum (Hect. MS. sp. О. Wilck. from the 
Upper попатна of New Zealand (21) is quite different, but Tubulostium 
1. (22) from the Utatür of S. India is related to or even 
identical fig the New Zealand form. The Indian species shows a sudden 
contraction near the aperture. This is missing in our shell. But it is not 
impossible that in our specimen this contraction was present and has been 
broken o 
GENERAL RESULTS. 
e genus Lahillia, a pelecypod genus occurring in the Upper 
шы of Quiriquina (Chile), South Patagonia, and Graham Land (Ant- 
arctica), is represented in the Upper Senonian of New Zealand T a xpo 
nearly related to or identical with Lahillia luisa О. Wilck. sp 
Zealand Lahillia has been collected at the following localitie Amuri 
Bluff (loc. 13) ; Middle Heg (loc. 761) ; Selwyn River, Malve тп Hills 
(loc. oe Shag Point (loc. 592). 
