22] 
appears that I should have left it in its former place with Gastro- 
chena and have removed the Panopea Norvegica to it. The shell 
differs from Panopea in having the pallial line broken up or divided 
into a number of separate spots, and the animal has very long taper- 
ing gills, prolonged far into the branchial siphon. 
9. PaANop#A MIDDENDORFFI, A. Adams. Zool. Proc. for 1854, 
p. 137. Arctic Seas. (Haslar Museum.) Appears to be a variety 
of P. Norvegica. 
The Geographical Distribution of the genus Panopea affords an 
illustration of the rule, or “law,” so earnestly investigated by the 
late Prof. E. Forbes,—that the range of genera, as well as of species, 
depends in great measure on their geological antiquity; and that 
when the members of a group are scattered over the greater part of 
the world, we may expect to find evidence of their existence in the 
intervening spaces during a former age. M. D’Orbigny describes 
139 extinct species of Panopea, commencing in the Permian age, 
and occurring in every part of the world where secondary or tertiary 
strata have been found. 
7. DESCRIPTIONS OF TWENTY-FIVE NEW SPECIES OF SHELLS FROM 
THE CoLLEcTION oF HuGcu Cumine, Esa. 
By Artruur Apams, F.L.S., &c. 
1. Tupicia armicEeRA, A. Adams. TJ. testa turbinato-fusiformi, 
epidermide fulvicante induta, spira obtusiuscula, apice mamillato ; 
anfractibus planis, in medio serie spinarum ornatis, spinis tubu- 
losis, regularibus, subrecurvatis, liris transversis, elevatis, squa- 
mulis, aculeatis instructis, et interstitiis lineis elevatis simplicibus ; 
anfractu ultimo serie secundo spinarum ad partem anticam ornato ; 
apertura ovali, intus alba, columella triplicata, canali recto pro- 
ducto ; labro intus lirato. 
Hab. Moreton Bay (Mr. Strange). Mus. Cuming. 
This species is at once distinguished from the other known ex- 
amples of Tudicla on account of the spiny armature of the whorls. 
2. Fusus sprrauis, A. Adams. JF’. testa fusiformi, tenui, albida, 
spira elevata, anfractibus spiralibus, convezis, ad suturas con- 
tractis, transversim liratis, in medio angulatis, carina tuberculata 
et carina altera infima subsimplice instructis ; apertura ovali, 
labio intus levi; labro intus sulcato, canali elongato, recto. 
Hab. New Zealand. Mus. Cuming. 
This is a beautiful and elegant spiral shell, very strongly reminding 
. one of the young of some unknown species of Gladius (Rostellaria) 
with the whorls spiral, and where the outer lip is undeveloped. 
3. Fusus pitectus, A. Adams. fF. testa fusiformi, subventri- 
cosa, spira mediocri; fulvicante, strigis irregularibus, fuscis 
longitudinalibus picta ; anfractibus ad octo, convexiusculis, supre- 
mis costato-plicatis, liris elevatis, transversis, crenulatis, majori- 
bus cum minoribus alternantibus, interstitiis longitudinaliter crebre 
