Vrn CONTENTS. 



Descriptions of genera and species — Continued. 

 Suborder Balanoraorpha — Continued. 

 Family Balanidae — Continued. 



Subfamily Balaninae — Continued. Page. 



Genus Balanus (Megabalanua) tintinnabulum antillensis G3 



Balanus (Megabalanua) tintinnabulum californicus C5 



Balanus (Megabalanus) tintinnabulum peninsularis . . . 66 



Balanus (Megabalanus) tintinnabulum coccopoma 68 



Balanus (Megabalanus) tintinnabulum concinnus 69 



Balanus (Megabalanus) tintinnabulum galapaganus ... 70 



Balanus (Megabalanus) algicola 72 



Balanus (Megabalanus) ajax 74 



Balanus (Megabalanus) psittacus 75 



Balanus (Megabalanus) maxillaris 77 



Balanus (Megabalanus) decorus 77 



Balanus (Balanus) eburneus 80 



Balanus (Balanus) improvisus 84 



Balanus (Balanus) amphitrite 89 



Balanus (Balanus) amphitrite albicostatus 90 



Balanus (Balanus) amphitrite niveus 92 



Balanus (Balanus) amphitrite inexpectatus 97 



Balanus (Balanus) amphitrite peruvianus 97 



Balanus (Balanus) concavus 100 



Balanus (Balanus) concavus glyptopoma 102 



Balanus (Balanus) concavus proteus 103 



Balanus (Balanus) concavus chesapeakensis 103 



Balanus (Balanus) concavus pacificus 104 



Balanus (Balanus) concavus coosensis 108 



Balanus (Balanus) rogalis 108 



Balanus (Balanus) poecilus 110 



Balanus (Balanus) alatus 110 



Balanus (Balanus) poecilotheca 110 



Balanus (Balanus) trigonus Ill 



Balanus (Balanus) spongicola 115 



Balanus (Balanus) calidus 118 



Balanus (Balanus) laevis 120 



Balanus (Balanus) laevis nitidus 122 



Balanus (Balanus) laevis coquimbensis 122 



Balanus (Balanus) perforatus 123 



Balanus (Balanus) gregarius 126 



Balanus (Balanus) aquila ] 27 



Balanus (Balanus) nubilis 131 



Balanus (Balanus) flos 135 



Balanus (Balanus) rostratus 138 



Balanus (Balanus) rostratus alaskensis 141 



Balanus (Balanus) rostratus heteropus 142 



Balanus (Balanus) rostratus apertus 144 



Balanus (Balanus) rostratus dalli 147 



Balanus (Balanus) balanus 149 



Balanus (Balanus) balanus pugetensis 163 



Balanus (Balanus) crenatus ] 65 



Balanus (Balanus) crenatus curvdscutum 175 



