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Royal Society :■ 



on the other hand, I fell in with a great many types in which the 

 bones contained no trace of lacunoe. And as this fact not only ap- 

 peared to me of interest with regard to the development of the bones 

 of fishes, but also promised to become of great value in systematic 

 zoology, and in the determination of fossil remains, I devoted my 

 whole time to this question. Now that I have investigated more 

 than 200 species belonging to nearly all tribes of osseous fishes, and 

 mounted about 500 microscopic preparations of their hard structures, 

 I hope to be able to treat this question more comprehensively than 

 has been possible hitherto, and in such a way as to lead to some 

 general conclusions. 



In giving the results of my observations, I begin with an enumera- 

 tion of the fishes which belong to the one, and those which belong 

 to the other type. 



I. Fishes lohose bones contain no bone-corpuscles. 



Ordo I. ACANTHOPTERI. 



Fam. 1. Percoidei. 

 Perca fluviatilis. 

 Apogon Rex mullorura. 

 Pomatomus telescopium. 

 Lucioperca sandra. 

 Serranus cabrilla. 

 Anthias buphthalmus. 

 Acerina vulgaris. 

 Centrarchus sparoides. 

 Priaeanthus macrophthalmus. 

 Therapon servus. 

 Traehinus vipera. 

 Trachinus draco. 

 Uranoscopus scaber. 

 Pomotis gibbosus. 

 Polynemus paradiseus. 

 Spliyraena spet. 

 Spliyra3na barracuda. 

 MuUus barbatus. 



Fam. 2. Cataphracti. 

 Trigla cuculus. 

 Trigla lyra. 

 Prionotus carolinus. 

 Platycephalus insidiator. 

 Daetyloptera volitans. 

 Cottus gobio. 

 Aspidophorus europaeus. 

 Monocentris japonicus. 

 Gasterosteus trachurus. 



Fam. 3. Sparoidei inch Mcenides. 

 Sargus annularis. 

 Sargus ovis. 

 Chrysophrys aurata. 

 Pagrus vulgaris. 

 Pagellus centrodontus. 



Boops salpa. 

 Boops vulgaris. 

 Dentex vulgaris. 

 Smaris vulgaris. 

 Smaris insidiator. 

 Gerres Plumieri. 



Fam. 4. Scicenoidei, 

 Corvina nigra. 

 Corvina lobata. 

 Micropogon undulatus. 

 Otolithus regalis. 

 Hsemulon formosum. 

 Pristipoma stridens. 



Fam. 5. Labyrinthiformes. 

 Anabas scandens. 

 Helostoma Temminckii. 

 Ophicephalus striatus. 

 Trichopus trichopterus. 

 Poly acanthus Hasseltii. 

 Spirobranchus capeusis. 



Fam. 6. Mugiloidei. 

 Mugil cephalus. 

 Mugil, spec. 

 Atherina Humboldtii. 

 Atherina vulgaris. 

 Atherina macrophthalraa. 



Fam. 7. Notacanthini. 



Mastacemblus pancalus. 

 Fam. 8. Scomber oidei. 



Scomber scomber. 



Xiphias gladius. 



Tetrapturus belone. 



Naucrates ductor. 



Lampugus pelagicus. 



