220 



SIXTH REPORT — 1836. 



Orel. LOPHOBRANCHIl. 



Syynathns typhle, Bl. 91, 1. N. York, 

 Mass. Mitch. Sm. 



Syynathus acus, Bl. 91, 2. U. S. Pbnn. 

 Hippocampusbrevirostris? N. York.MncYi. 



Of this order, consisting, like the preceding one, of only one 

 natural family, there are about 15 European species. The Ame- 

 rican naturalists have mentioned the same generic forms as ex- 

 isting in their seas, but no correct details of the species of the 

 northern part of the New World have yet been published. 



Ord. PLECTOGNATHI. 



Fam. Gymnodontes, 



Diodon imnctatus, Bl. 125, 126. Braz. — 

 N. York. ScHffiPF. 

 „ riviilatus, Cuv. N. York. Mitch. 



6,3. 

 „ pilosus, Mitch. 6, 4. N. York. 

 Tetraodon geoiuetricus. Cat. 28. Bah. — 

 U.S. 

 „ lineatm, Bl. 141. Nmo York. 



SCHCEPP. 



Tetraodon hispidus, Schcepf. A''. York. 



„ turgidus, Mitch. 6, 5. do. Mas- 

 sach. 



„ loevigatus, Will. I. 2. 



„ curvus, Mitch. N. York. 



„ niatheniaticus, Id. do. 



„ lagoceiilialus, Cat. 28. Virr/. 

 Orthagoriscus niola, Bl. Schn. U. S. 



„ brevis, Mitch. N. York. 



Fam. SCLERODERMATA. 



Batistes aurantiacus, Mitch. 6, 1 

 York. 



„ brocms, Id. N. York. 

 Ostracion triqueter, Bl. 130. Mass. Sm 



„ bieaudalis, Smith. Mass. 



„ quadricornis, Bl. 134. U. S. 



New 



Balistes tomentosus, L. Seba, 24, 18. U. S. 

 „ vctula, Bl. 150, Cat. 22. Baha- 

 mas. — U.S. 

 „ hispidus, L. Seba, 24, 2. U. S. 

 „ monoceros, Cat. 19. Bah. Mass. 



Smith. 

 „ sufflamen, Mitch. 6, 2. N. York. 



Gymnodontes. — This family of plectognathi belongs chiefly 

 to the warmer seas, and the species have not yet been satisfac- 

 torily discriminated, especially the American ones. The tetrao- 

 don PennantijY ARR., (termed by Pennant Icevigatus and lagoce- 

 jihaliis.) and orthagoriscus niola and ohlongus extend north- 

 wards to the English coast. The tetraodon lineatus inhabits 

 the Nile. This species, and several others which exist on the 

 eastern side of the Atlantic, occur in the lists of American ich- 

 thyologists ; but in the absence both of good descriptions and 

 figures there is i*eason to fear that much error exists in their de- 

 terminations. 



Sclerodennata. — This family also abounds within the Tropics, 

 haunting coral banks and other rocky places. Many frequent 

 the shores of the Bahamas, the Florida Keys and the Bermudas, 

 but the species have not been fully described. The balistes ca- 

 priscus of the Mediterranean and British Channel is the only 

 European one. 



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