= 
125 
Gonigoria cLAvATA. (Radiata, Pl. III. fig. 1.) 
Coral clavate, rounded at the end, simple, or rarely forked. 
Hab. 2 
The coral is almost two inches high, and the thickest part is about 
one-third of an inch in diameter. 
I take this opportunity of presenting a figure of another Coral, 
which, although described\by me several years since, has not yet been 
engraved. 
NIDALIA OCCIDENTALIS, Gray, Proc. Zool. Soc. 1835, p. 60. (Ra- 
; fy 
diata, Pl. III. fig. 2.) 
f P AS 
Hab. West Indies, Montserrat. f St l 
3. DESCRIPTION OF A NEW GENUS OF BIVALVE SHELLS, AND A 
Sra Ecc, rrom New ZEALAND. 
By J. E. Gray, Esa., F.R.S., P.B.S. erc. 
Mr. Richard Taylor, of Wanganui, New Zealand, has kindly sent 
to the British Museum a series of marine and freshwater shells, col- 
lected by him in 1847. Among many other interesting specimens is 
one which combines the form and internal appearance of a Solen with 
the hinge-characters of a Mactra, and evidently forming the type of a 
genus not hitherto observed. It may be thus named and character- 
ized :-— 
VANGANELLA. 
Shell equivalve, oblong, transverse, thin, compressed, rounded be- 
hind, rather produced and tapering in front, covered with a thin, 
hard, polished periostraca; the inner surface of each valve straight, 
with two diverging, thickened ribs just within the stars of the ab- 
ductor muscles, which are large and far apart, and the upper front 
edge of the valve double; siphonal inflection short, broad; hinge- 
tooth of left valve folded together, moderate; of right valve small, 
separate ; lateral teeth short, small, close to hinge-tooth of left valve 
double ; the ligament small, just within the cardinal edge, not sepa- 
rated by any shell plate from the cartilage, and partly hidden from 
view by the upper edge of the hinge-margin ; the cartilage very large, 
inclosed in a large, elongate, shallow, triangular pit on the upper part 
of the hinder internal rib. 
The position of the cartilage-pit and the internal ribs at once sepa- 
rate this genus from Spisula. 
VANGANELLA TAYLORII. 
Shell rather compressed, white, smooth, covered with a pale brown- 
ish-white polish ; periostraca darker coloured on the upper part of 
the front edge; the upper hinder slope irregularly wrinkled with 
periostraca. 
Hab. New Zealand. 
