1885.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 363 



number, of which specimens have been examined by the writer are in- 

 dicated by a star (*). Tliose species, seventy-one in number, which 

 appear to be common to both the Atkinticaud Pacific coasts of tropical 

 America are indicated by the dagger (t). Those actually collected at 

 Mazatlan by Professor Gilbert, one hundred and seventy-two in num- 

 ber, are indicated by the letter "Ji"; "P" indicates those obtained by 

 Professor Gilbert at Panama. Of these there are about one hundred 

 and eighty. The other references explain themselves. 



Family 1.— BRANCHIOSTOMID^. 

 1. BRANCHIOSTOMA Costa. 



1. Branchiostoma lanceolatum t Pallas. 



Angel Island, Gulf of California [Lockington). 



Family 2.— SCYLLIID^. 



2. GINGLYMOSTOMA MuUer «& Henle. 



2. Ginglymostoma cirratum * t Giiieliu. M., P. 



3. Ginglymostoma fulvum * t Poey. P. 



(Doubtful species.) 



Family 3.— GALEORHINIDiE. 



3. GALEUS Ralinesque. 



4. Galeus lunulatus * Jordiiu & Gilbert. M. 



5. Galeus dorsalis * Gill. P. 



Panama {Gill). 



4. GALEOCERDO Mttller & Heule. 



6. Galeocerdo maculatus * t Kanzaui. M. 



San Jose {Gilbert). 



5. CARCHARHINUS Blainville. 



7. Carcharhinus longurio * Jordan & Gilbert. M., P. 



8. Carcharhinus limbatus f Miiller &l Heule, 



Chiapam {Gtlir.) (I). 



9. Carcharhinus aethalotus* Jordan & Gilbert. M., P. 



10, Carcharhinus* sp. iudescr.i P. 



11. Carcharhinus fronto * Jordan & Gilbert. M. 



' This species and others similarly indicated belong to Professor Gilbert's collec- 

 tion of 1883. These were destroyed by fire before the publication of descrii^tions of 

 them as nevr species. 



