358 
Page 
Balanus tintinnabulum Linné 310 
— Campbelli Filhol... 310 
Subgen. Eubalanus. 314 
— amphitrite Darwin . 314 
— minutus Hoek. 317 
— trigonus Darwin ... 320 
— rostratus Hoek .... 320 
crenatus Bruguiére. 321 
— glandula Darwin .. 321 
Subgen. Hesperiba- 
lanus . 321 
— hesperius Pilsbry .. 321 
Subgen. Chirona ... 321 
— amaryllis Darwin .. 321 
Subg. Austrobalanus 322 
— vestitus Darwin.... 322 
Subgen. Solidobala- 
nus . 323 
auricoma Hoek .... 323 
Subgen. Armatobala- 
nus . 324 
allium Darwin. 325 
Subg. Conopea .... 325 
calceolus Darwin (?) 325 
proripiens Hoek .. . 326 
Page 
Balanus dentifer n. sp.326 
Genus Acasta . 330 
Acasta cyathus Darwin .... 330 
— japonica Pilsbry.... 330 
— pectinipes Pilsbry .. 330 
— conica Hoek. 330 
— Dofleini Kriiger.330 
— madreporicola n. sp. 333 
Genus Tetraclita . 337 
Tetraclita squamosa (Bru¬ 
guiére). 337 
Tetraclita purpurascens Dar¬ 
win . 337 
Tetraclita vitiata Darwin ... 339 
Genus Elminius . 341 
Elminius plicatus Gray .... 341 
— simplex Darwin ... 342 
— sinuatus Hutton... 342 
Genus Pyrgoma . 344 
Pyrgoma sp. 344 
Appendix: 
Scalpellum aff. imbricatum 
Hoek . 344 
Some geographical remarks. 345 
Literature cited. 345 
9—3—1922. 
