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CALIFORNIA ACADEMY OP SCIENCES 



EXPLANATION OF PLATE IV. 



Fig. 61. Pandalus Dance, carapace. 



Fig. 62. " " acicle. 



Fig. 63. Syncaris Trewi, carapace. 



Fig. 64. Penceus calif orniensis, carapace. 



Fig. 65. " " hand and carpus of first pereopods. 



Fig. 66. " " hand and carpus of second pereopods 



Fig. 67. " " hand and carpus of third pereopods 



Fig. 68. " " abdomen. 



Fig, 69. " " acicle. 



Fig, 70. Mysis costata, telson and outline of uropods. 



Fig. 71. " 5' antenna. 



Fig. 72, " " fourth pleopod of a male. 



Fig. 73. Heteromysis spinosus, antenna. 



Fig. 74. " " third maxilliped. 



Fig. 75. " " thoracic leg. 



Fig. 76. " " telson and outline of uropods. 



Fig, 77. Mysidopsis elongata, anteunule of the male. 



Fig, 78. " " antennule of the female. 



Fig. 79. " " antenna. 



Fig. 80. " " telson and uropods. 



Fig. 81. Thysancessa spinifera. 



I 



