198 BULIvETIN OF THE BUREAU OF FISHERIES. 



Plate XI. 

 Copepodid larvce. 



Fig. 41. Female fourth copepodid larva from gills of Ameiurus nebulosus. FiG. 42. First antenna. 

 Fig. 43. Second antenna. Fig. 44. Maxilliped. Fig. 45-49. First, second, third, fourth, and fifth 

 swimming legs. Fig. 50. Mandible of fourth copepodid larva from gills of Lepisosteus platosiomus . 

 Fig. 51. First (upper) and second (lower) maxillae. Fig. 52. Maxilliped. 



Plate XII. 



Copepodid lance. 



Fig. 53, 54. Male and female fourth copepodid larvse taken together from gills of Lepisosteus platostomus. 

 Fig. 55. Second antenna. Fig. 56. Dorsal view of mouth parts separated from mouth tube. Fig. 

 57-61. First, second, third, fourth, and fifth swimming legs. 



Plate XIII. 



Internal anatomy of fourth copepodid larvx. 



Fig. 62. Median longitudinal vertical section. Fig. 63. Vertical section of posterior body a little 

 to one side to show spermatophore receptacle. Fig. 64. Horizontal longitudinal section. Fig. 65. 

 Longitudinal diagonal section, showing eye. Fig. 66. Section of sperm duct, enlarged. Fig. 67. 

 Transverse section of body through the testes. Lettering; dc, digestive cells; <?, eye; i, intestine; 

 ig, infraganglion ; m, muscles; oe, oesophagus; sa, sperm daughter cells; sd, sperm duct; se, sperms; 

 sg, supraganglion; sm, sperm mother cells; sp, spermatophore; sr, spermatophore receptacle; s, 

 stomach; r, rectum; /, testis. 



Plate XIV. 



LernoBocera anomala and L. dolabrodes, new species. 



Fig. 68. L. anomala, side view. Fig. 69. Ventral view of same. Fig. 70. Cephalon, antennae, and 

 mouth parts. Fig. 71. First antenna of L. dolabrodes. Fig. 72. Second antenna. Fig. 73. First 

 swimming legs of Z.. anoTOo/o. Fig. 74. Second antenna of same. Fig. 75. L. dolabrodes. Fig. 76. 

 Mouth parts. Fig. 77, 78. First and second swimming legs. 



Plate XV. 



Head outlines of the different species. 



Fig. 79. dolabrodes. Fig. 80. tortua. Fig. 81. lagenula. Fig. 82. catostomi. Fig. 83. anomala. Fig. 

 84. cruciata. Fig. 85. esocina. Fig. 86. cyprinacea. Fig. 87. temnocephala. Fig. 88. phoxinacce. 

 ViG.?>(). tenuis. Fjg. ^o. diceracephala. Fig. gi. variabilis. Fig. g2. haplocephala. Fig. g^. pomo- 

 tidis. Fig. 94. barnimii. 



