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Eggs of fish, molluscs, insects and crabs: 1) egg of Shark (Scyllium); 2) egg of Cristiceps; 3) eggs with embryos of Gobius; 4) spawn of Fierasfer; 5) egg with embryos of Uranoscopus; 6) egg of Belone; 7) spawn of Lumpsucker (Aplysia); 8) spawn of Squid (Loligo); 9) spawn of Sea snails (Murex); 10) spawn of Octopus; 11) spawn of Sepia; 12) egg of Flatworm (Tristomum); 13) egg capsule of Mantis with cross section (14); 15) egg of Monarch butterfly (Danaus plexippus, or Danais); 16) egg of Bedbug (Cimex lectularius, or Acanthia lectularia); 17) egg of Mite (Oribata); 18) eggshell fragment of Crab (Apus); 19) egg of Anostraca (Branchipus). Wood engravings, published in 1897.