186 JOURNAL OF SCIENCE, 
summary of the structural veculiarities described in this paper :— 
The anterior end of the air-bladder fits closely against the hinder 
wall of the skull, and is produced outwards into paired 
pouches which are in contact with the thin skin beneath the oper- 
culum and in front of the shoulder-girdle. On each side of the 
hinder surface of the skull, immediately beneath the foramen for 
the exit of the vagus, is a large space closed by a thin lamina, 
partly membranous, partly bony. Thislamina forms the pattition 
wall of the auditory capsule, and is bathed internally by perilymph 
while externally the wall of the air-bladder is closely applied to it. 
Sonorous vibrations striking on the thin skin beneath the opercu- 
lum will be transmitted to the air in the air-bladder, thence to the 
thin lamine, and thence to the organ of hearing. The sub-vper- 
cular skin thus functions as a tympanic membrane, the bony 
lamine as a fenestra ovalis. Similar arrangements have been 
described in other fishes, but have not previously been observed 
in the Gadidz. The paper was illustrated and the structure per- 
fectly explained by a dis-articulating piccieton and prepared dissec- 
tions of the fish. 
PHILOSOPHICAL MNS Tw Te OF CANTERBURY. 
4th May, 1882.—Prof. Hutton, vice-president, in the chair. 
A number of papers, etc., presented to the Society were laid 
on the table by the Secretary. 
The following papers were read :— 
(1) ‘‘ Descriptions of New Zealand Micro-Lepidoptera (I.) by 
E. Meyrick, B.A. 
Monograph of the Crambide, with criticisms on previous 
writers, and remarks on affinities of New Zealand fauna ; Phycidee 
and Galleride noted as wholly absent. 
Thinasotia leucophthalma, n. sp.—Brown, with two dark dentate 
transverse lines, a small transverse white discal spot, and some 
black basal marks. Christchurch. 
Scenoploca, n.g.—Allied to Thinasotia, but palpi tufted, and female 
with abbreviated wings. 
Scen. petvaula, n. sp.— Grey, with some blackish suffused spots, 
two pale blackish-margined transverse lines, and a small trans- 
verse white discal spot. Larva on lichens. Christchurch. 
Cryptomima, n g.—Allied to Thinasotia, but fore-wings with raised — 
tufts of scales. 
Crypt. acevella (Walk.)—Christchurch and Dunedin. 
Diptychophora pyrsophanes, n. sp.—Dark fuscous, with hind-margin ~ 
ochreous, and one costal and two dorsal small yellow spots. Wel- 
lington to Lake Wakatipu. 
Dipt. chrysochyta, n. sp.—Yellowish-ochreous, partly suffused — 
with brownish, with two strongly-curved double dark fuscous 
transverse lines, and a discal spot, half white, half metallic-grey. 
Auckland. 
Dipt. astrosema, n. sp.—Light ochreous-brown, with two dark 
transverse lines, a white blotch towards base, a white trifid discal 
spot, and several smaller white spots. South Island. ; 
Dipt. lepidella (Walk.)--Christchurch to Lake Wakatipu. 
Dift. leucoxantha, n. sp.—Ochreous-orange, with a vite discal, 
spot, and hind-wings white. Lake Wakatipu. 
