338 EXPLANATION OF PLATES. 



47, 48. Ischnochiton dispar Sowb. Conch. Icon., . . .111 



49, 50. Ischnochiton inquinatus Rve. Conch. Icon., . . 90 



51-55. Ischuochiton adamsii Cpr. Pilsbry del., . . .111 



56, 57, 59. Ischnochiton australis Sow. Pilsbry del., . . 144 



58. Ischnochiton australis Sow. Conch. Icon., . . .144 



PLATE 19. 



60, 61. Ischnochiton tigrinus Krauss. Sudafrik. Moll., . 143 

 62, 63. Ischnochiton tigrinus var. unicolor Pils. Pilsbry 



del., 143, 144 



64-66. Ischnochiton hakodadensis Cpr. Pilsbry del., . 147 



67. Ischnochiton novsehollandise. Gray. Pilsbry del., . . 145 



68. Ischnochiton novsehollandise Gray. Ross del., . .145 



69. Ischnochiton novsedollaiidise Gray. Conch. Icon., . . 145 

 70-74. Ischnochiton albrechti Schrenck. Amurl. Moll., . 147 



PLATE 20. 



1-4. Ischnochiton rissoi Payr. Bull. S. Mai. ItaL, . . 102 

 5-7. Ischnochiton rissoi Payr. (young). Bull. S. Mai. Ital. 102 



8-10. Ischnochiton rissoi var. meneghinii. Journ. Conch., 



11. Ischnochiton yerburyi Smith. P. Z. S., . 



12, 3, 14, 15. Ischnochiton oniscus Kr. Siidaf. Moll., 

 16, 17. Ischnochiton reticuiatus Rv. Conch. Icon., 

 18, 19. Ischnochiton pertusus Rv. Conch. Icon., . 

 20. Ischnochiton striolatus Gray. Conch. Icon., 



103 

 101 

 100 

 101 

 103 

 105 



21-24. Ischnochiton striolatus Gray. Ross del., . . .105 

 25, 26. Ischnochiton caribseorum (Cpr.) Smith (=1. striola- 

 tus). J. Linn. Soc., 107 



PLATE 21. 



27, 28. Ischnochiton pruinosus Gld. U. S. Expl. Exped., . 109 



29-34. Ischnochiton imitator Smith. P. Z. S., . . .116 



35, 38. Ischnochiton punctulatissimus Sowb. Conch. 111., . 115 



36,37. Ischnochiton punctulatissimus Sowb. Pilsbry del., . 115 



39. Ischnochiton interstinctus Gld. Pilsbry del., . . 119 



40, 41. Ischnochiton papillosus Ad. Ross del., . . .114 

 42-46. Callistochiton shuttleworthianus Pils. Pilsbry del., . 273 

 47, 48. Ischnochiton catenulatus Sowb. Conch. Illust, . 110 



49. Ischnochiton roseus Sowb. Conch. Icon., . . .113 



50. Ischnochiton roseus Sowb. Conch. Illustr., . . .113 



51. 52. Ischnochiton colubrifer'Rve. Conch. Icon., . . 95 

 53. Ischnochiton rugulatus Sowb. Beechey's Voy., . .110 

 54-56. Ischnochiton rugulatus Sowb. Conch 111., . .110 

 57. Ischnochiton rugulatus Sowb. Conch. Icon., . . .110 



