148 
BIELBECKS. 
Stag of great size ... ... Portions of horn and metatarsal bone. 
Horse of large size ... ... Metatarsal and phalangal bones of the hind leg. 
Felis spelcea Lower jaw; part of upper jaw ; femur, radius, ulna, and 
metacarpal bones. 
Wolf ... Humerus, radius, and ulna of right side ; right lower 
jaw ; condyle of the other. 
Birds : Duck Ulna, clavicle, tibia. 
Insects. ... ... ... The green elytron of a species of chrysomela. 
Molt.tisca. ... ... ... The remains of this class were numerous in the black 
marl, but did not occur in any other member of the deposit. 
They consisted of thirteen species, all identical with living types 
procured in the neighbouring country : viz. 
Three Terrestrial Shells. Helix nemoralis, four specimens marked with coloured 
bands ; the rufous tint though faded is still distinguishable. On 
three of them are three bands on the upper whorls, on the other 
two. 
Helix caperata , two specimens. 
Pupa marginata, three specimens. 
One Swamp Shell. ... Succinea amphibia Drop, three specimens. 
Nine Fresh-Water Shells. Limnea Umosa, one specimen. 
pakistris, fifteen specimens, varying like the re- 
cent examples in proportion and degree of smoothness, but never 
bevilled in the upper part of the volution ; the twist on the pillar 
lip is perhaps a little more decided and prominent. There is 
one specimen of a very remarkable variety shaped like L. lon- 
giscata of Lamarck, but marked with facets like the other speci- 
mens of L. palustris. 
Planorbis complanatus, twenty-three specimens. I can 
find no other difference between these, and those now living near 
York, than the rather more frequent occurrence of spiral stria? 
across the lines of growth. The same varieties as to flatness of 
the whorls and position of the keel as in fresh specimens. 
Planorbis vortex, one. 
contortus, two. • 
nitidus . 
spirorbis, one. 
Valvata cristata, one. 
Pisiduim amnicum, five- 
