134 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



EXPLANATION OF PLATE IL 



Page. 



Schloetibachia chico'ensis Trask. 116 



Figs. 23-24. Mature shells. 



Fig. 25. Suture line of same. 



Schlceiibachia bakeri, sp. nov. 121 



Figs. 26-30. Mature shells. 



Fig. 31. Enlarged view of ventral surface. 



Fig. 32. Young shell. 



Fig. 33. Enlarged suture of young shell. 



Schlcenbachia propinqua Stol. 123 



Figs. 34-35. Mature shells. 



Fig. 36. Suture line of same. 



Figs. 37-38. Young shells. 

 Schlcenbachia knighteni, sp. nov. 119 



Figs. 39-40. Young shells. 

 Schlcenbachia multicosta, sp. nov. 120 



Figs. 41-43. Young shells. 



Fig. 44. Very young stage. 



Fig. 45. Very young shell; X2. 



Figs. 46-47. Mature shells. 

 Schlcenbachia oregojiensis, sp. nov. 122 



Figs. 48-49. Adult shells. 



Figs. 50-54. Young shells. 



Figs. 55-56. Very young shells; X2. 



Fig- 57- Suture of young shell. 



Scaphites condotii, sp. nov. 11 r 



Figs. 58-59. Mature shells. 



Figs. 60-62. Young shells. 



Fig. 63. Suture line. 



Scaphites condoni var. appressus, var. nov. 112 



Figs. 64-65. Mature shells. 



Fig. 66. Young of same. 



Scaphites roguensis, sp. nov. 112 



Fig. 67. Mature shell. 



Figs. 68-70. Young shells of same. 

 Scaphites perrini, sp. nov. 114 



Figs. 71-72. Mature shells; X2. 



Fig. 73. Suture of same. 



