PLATE XVIII. 



i 



PAGE 



Fig. 81. Typhis antiqutts. Magnified. . 82 



Fig. 32. Fusus Martinez. Natural size. 82 



Fig. 33. F. Mathewsonii. Natural size. 83 



Fig. 34. F. Avbrillii. Magnified. 83 



Pig. 3-3. F. Diaboli. Magnified. 84 



Fig. 3G. F. (Heinifusus) Kemondii. Natural size. 87 



Magnified view of surface. 



Fig. 37. Neptunea curvirostris. Magnified. 88 



Fig. 38L N. ponderosa. Natural size. 88 



Fig. 39_ N. perforata. Magnified. 81 



Fig. 40. N. supraplicata. Magnified. 89 



Fig. 41. N. Hofemannii. Natural size. 90 



Fig. 42. N. gracilis. Magnified. 90 



Fig. 43- Perissolax brevirostris. Natural size. 90 



Fig. 44. Tritonium Diegoensis. Magnified. 95 



Fig. 4<i. Turris Claytonensis. Magnified. 92 



Fig. 47. T. (Drillia) varicostata. Magnified. 93 



Fig. 48. Pugnellus hamulus. Young. Natural size. 124 



Fig. 49L Nassa cretacea. Magnified. 97 



Fig. 50. N. ANTiyuATA. Magnified. 97 



Fiit 51. Haydenia impressa. Natural size. 98 



n. Top view. 



Fig. 52. Pseudoliva lineata. Natural size. 99 



Pig. 53. Ohvella Mathewsonii. Magnified. 100 



Fig. 54. Anoillaria elonuata. Magnified. 100 



Fig. 55. ? Fasciolaria l.eviuscula. Natural size. 100 



