SHELL MONSTERS. 
There are shell monsters as well as monster animals and plants. These monsters are various. 
J. scalariform:; »%. carinated; 3. acuminated; 4, sinistral; 5, dwarfs; 6. giants, etc, 
Upper row, left: — Pverocera /ambis whose shape and number of finger-like processes at the outer lip are 
abnormal, 
Upper row, right: — Aaliotis gigantea with two series of holes, 
Middle row, left: — Podinices didyma whose last whorl is abnormal, 
Middle row, right: — Placunanomia radiata attached to the upper valve of Pecten Jagueatus, the sculpture 
or radiating ribs of which are reproduced on the upper valve of the former. 
Lower row, from the left: — Zetiavis japonicus with a bending spire; a sinistral monster of Zibo coronatus, 
that is, an w/tra-dextral specimen ; a scalariform monster of Avcularia euglipta; Fusus perplexus whose canal is 
distorted, 
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