BJ T Ao eet)” ee 
Hector.—On the Belemnites found in New Zealand. 487 
fourth of the total length. Ventral surface of guard with a broad shallow 
groove continued almost to the apex, and with distinct lateral furrows on 
the lower third. 
This species is easily recognized from B. aucklandicus by the straight 
central axis of the guard (which is also more slender), the tapering apex, 
and the well-marked lateral furrows which are discernible in perfect 
specimens. 
From grey calcareous marls with Inoceramus haastii that overlie the 
plarit-beds of the Mataura series, Kawhia Harbour, and East Cape district 
of the North Island. Upper Jurassic. 
Group III.—Norocarr. 
B.—Gastrosiphiti. 
PI. XXIII., a-e. 
5. Belemnites australis, Phillips, Q. J. Geol. Soc., XXXVI., 259. 
Belemnites lindsayi, Hector, N.Z. Geol. Rep., 1873-4, xiii. 
Deep furrows on the dorsal angles of the lateral areas of the anterior 
portion of the guard extending only slightly beyond the depth of*the 
alveolar cavity. Angle of the phragmacone from 20? to 30°. 
Guard sub-hastate, depressed, trigonal anteriorly, oval in section of 
middle portion, and terminating in a blunt conical point, sometimes tuber- 
culate at the apex. Length of guard twice that of the phragmacone. 
Occurs in the calcareous greensands of the Amuri series at Amuri Bluff 
and Cape Campbell, and in the upper greensands overlying the brown coal 
at Waipara, Green Island, Waitaki, and Mount Hamilton. 
There is no doubt, I think, that this belemnite is the same species as 
that described by the late Professor Phillips as a fossil from Queensland, 
but without any distinct locality or stratigraphical position being assigned 
to it. : 
It is probably also identical with B. seclusus, Blandford, from the 
Ootadoor group of the cretaceous formation of India.* 
While this species maintams the above general characters with great 
constancy, the large series of specimens which I am able to exhibit, 
upwards of sixty in number, show a wonderful variety in the form and 
proportions of the guard, even in specimens of similar size. Five distinct 
forms may be described. 
Var. a.—Lateral furrows short, deep, and straight. Angle of phragma- 
cone 82°. Guard slightly hastate, with a blunt apex. Alveolar cavity 
nearly half the length of the guard. 
Var. 3.—Lateral furrows long, shallow, and sinuous. Angle of the 
phragmacone 28°. Guard fusiform, depressed on dorsal surface. Apex 
* Pal. Ind., 1861, p. 5. 
