469 
Ols. This is a small and neat species, and quite different from any other 
member of this family yet described from Queensland rocks. It is named in honour of 
Mr. .1. B. Henderson, Hydnaulie Engineer to the Queensland Government, who has 
been kind enough to contribute several species for the illustration of this work. 
Loo. North-east end of Glanmire Block, seventeen miles south-west of Tambo 
{Mr. Ooffage). 
Eamily— NHCULID.^. 
Genus — NUOULA, LamarcTe, 1799. 
(Prodrome— M^m. Soc. Hist. Nat. Paris, 17S9, p. 87.) 
Ntjctjua quadhata, Etheridge, PI. 26, figs. 8 and 9. 
Nucula quadrafa, Etheridge, Quart. Journ. Geol. Soc,, 1872, xxviii., p. 341, 1. 19, f. 5, t. 20, f. 3. 
Ohs. This species, hitherto only known from the Desert Sandstone of Mary- 
borough, is described under the head “Desert Sandstone,” to which the reader is 
referred. It has, however, been found in the Bolling Downs Eormation, in the Aramac 
Town Well, at the depth of two hundred and forty-four feet, by Mr. S. Sharwood, by 
whom it was presented to the Geological Survey. 
Nttcula Coopkei, Moore, PI. 34, fig. 11. 
Nucula. Cooperi, Moore, Quart. Journ. Geol. Soc., 1870, xxvi., p. 25t, t. 12, f. 8. 
Sp. Char. Shell trigonal, very convex ; timbones rather anterior, widely 
separated; anterior side angular, posterior side rather produced and attenuated; ventral 
margin rounded. {Moore.) 
Ohs. This shell, for a Nucula, attains considerable size. It may be distinguished 
from Nucula guadrata, Eth., and N gigantea, Eth., apparently by its more deltoid form. 
Loc. Wollumbilla {The late Bev. W. B. Glarhe). 
Nucula trukcata, Moore, PI. 33, fig. 9. 
Nucula truncate, Moore, Quart. Journ. Geol. Soo., 1870, xxvi., p. 254, t. 12, f. 9. 
Sp. Char. Shell triangular ; umbones anterior, compressed ; anterior side very 
truncated ; dorsal margin rounded ; hinge-line with about seven large teeth on the 
posterior side of the umbo, and with four or five on the anterior side. {Moore.) 
Ohs. According to Mr. Moore, N trmicata is readily distinguishable from 
A. Cooperi by its more compressed form and truncated margin. 
The name must not be mistaken for a similar one used by Nilsson, for a shell 
which is now usually referred to Nucula pectinata, Sby. I find, from South Australian 
examples forwarded to mo by Prof. E. Tate, that there is a marked posterior slope and 
apparently a wide and long heart-shaped lunule. 
Loc. Wollumbilla {The late Bev. W. B. Clarice). 
Nucula australis, Moore, sp. 
^eda australis, Moore, Quart. Joum. Geol. Soo., 1870, xxvi., p. 251, t. 12, f. 7. 
Sp. Char. Shell transversely ovate ; umbones anterior, contiguous, compressed ; 
anterior side rounded, posterior side longest, attenuated ; hinge-teeth small, numerous ; 
dorsal surface covered with numerous transverse strioe. {Moore.) 
Ohs. Although described as a Leda by Mr. Moore, this shell has quite as much 
the appearance of Nucula, to which it is now referred. The description will apply to 
either genus, and, like many of Moore’s species, the shell is too loosely diagnosed to be 
easily recognisable. 
Loc. Wollumbilla {The late Bev. W. B. Clarice). 
