L. Forró szerk.: Miscellanea Zoologica Hungarica 8. 1993 (Budapest, 1993)

Janisch, M.: A mutant form of the meadow viper (Vipera ursinii rakosiensis Méhely) from Hungary with a peculiar colour pattern

Table 1. Life history of the mutant and a normally coloured female during their 95 days in terrarium Date mutant normal 4. May: defecation; 2 small mice eaten 5. : defecation 7. : 1 small rat eaten 1 sand lizard eaten 9. : 1 ad. sand lizard eaten 2 semiad. sand liz. eaten 10. : sun-bathing 12.: 2 semiad. sand liz. eaten 17. : 2 semiad. sand liz. eaten 2 sand lizards eaten 19.: sun-bathing 25.: beginning to slough 27. : eyes pale greyish-blue 28. : warm water spray 29. : eyes clear, sun-bathing 31.: sloughing without trouble sloughing with tears weight 116 gr, length 56 cm, slough 65 cm 31.: small mouse eaten Rana arvalis eaten (3.5 cm) 3. June: - 1 sand lizard eaten 4. : sun-bathing 8. : 1 mouse, 1 sand lizard eaten 1 ad. sand lizard eaten 11. : sun-bathing 14. : gravidity well observable 1 sparrow hatchling eaten 15. : no more feeding, heavy gravidity 28.: beginning to slough, eyes bluish-grey 1. July: second sloughing 2. : 1 mouse eaten sloughing with tears 6. : sun-bathing 7. : sun-bathing 12. July: 19 youngs, 13.5-14.5 cm 14. July: - 12 youngs, 12.5-13.5 cm 15. : 1 small rat eaten, beginning to slough 18. : sun-bathing, young eating a grasshopper 19. : during feeding youngs bite each other, too 20. : sloughing, sun-bathing 21. : 1 semiad. mouse eaten sloughing, 1 mouse eaten 24.: youngs eating grasshoppers 27.: sun-bathing 30. : sun-bathing ljuv. mouse eaten 1. August: - 1 juv. mouse eaten 6. August: all specimens released Acknowledgement I am grateful to Dr. Zoltán Korsós, Hungarian Natural History Museum, for providing the English translation of the paper.