[99] FISHERIES OF THE UNITED STATES. 611 



Heteromeyenia repens Potts. 



57. Lehigh Gap, Pennsylvania. Opaque. 



58. Lehigh Gap, Pennsylvania. Transparent. 



59. Lehigh Gap, Pennsylvania. Spicules. 



Heteromeyenia argyrosperma Potts. 



60. Lehigh Gap, Pennsylvania. Opaque. 



61. Lehigh Gap, Pennsylvania. Transparent. 



62. Lehigh Gap, Pennsylvania. Spicules. 



63. Var. tenuis Potts. Lake Hepatcong, New Jersey. Opaque. 



64. Var. tenuis Potts. Lake Hepatcong, New Jersey. Transparent. 



65. Var. tenuis Potts. Lake Hepatcong, New Jersey. Spicules. 



Heteromeyenia Baleni Potts. 



66. Plainfield, New Jersey. Opaque. 



67. Plainfield, New Jersey. Transparent. 



68. Plainfield, New Jersey. Spicules. 



Heteromeyenia Byderi Potts. 



69. Indian River, Philadelphia, Pennsylvania. Opaque. 



70. Indian River, Philadelphia, Pennsylvania. Transparent. 



71. Indian River, Philadelphia, Pennsylvania. Spicules. 



72. White Haven, Pennsylvania. 



73. White Haven, Pennsylvania. 



Carterius tubisperma Mills. 



85. Niagara River, New York. Opaque. 



86. Niagara River, New York. Transparent. 



87. Niagara River, New York. Spicules. 



Carterius tenosperma Potts. 



88. Lansdowne, Pennsylvania. Opaque. 



89. Lansdowne, Pennsylvania. Transparent. 



90. Lansdowne, Pennsylvania. Spicules. 



Carterius laiitenta Potts. 



91. Chester Creek, Pennsylvania. Opaque. 



92. Chester Creek, Pennsylvania. Transparent. 



93. Chester Creek, Pennsylvania. Spicules. 



Tubella reticulata Bk. 



94. Rio Amazonas, Brazil. Transparent. 



95. Rio Amazonas, Brazil. Spicules. 



Tubella Pennsylvanica Potts. 



96. Lake Hepatcong, New Jersey. Opaque. 



97. White Haven, Pennsylvania. Transparent. 



98. Lehigh Gap, Pennsylvania. Spicules. 



Tubella Fanshawei Potts. 



99. Bristol, Pennsylvania. 



Parmula Batesii Bk. 



100. Rio Amazonas, Brazil. Opaque. 



101. Rio Amazonas, Brazil. Transparent. 



102. Rio Amazonas, Brazil. Spicules. 



