II. THE GLANDULOCAUDIN.E (A NEW SUBFAMILY OF 

 CIIARACID FISHES WITH INNATE POTENTIALI- 

 TIES FOR SEXUAL DIMORPHISM.) 



In 1858, Gill described three genera of fishes from the Island 

 of Trinidad. Later studies have demonstrated that they repre- 

 sented respectively 'male, female, and young of a single species, 

 Htcvardia alhipinnis Gill. Liitken and Regan secured additional 

 specimens also on the Island of Trinidad. Within a year, the 

 first specimens of the genus taken outside of Trinidad were col- 

 lected at the base of the Cordilleras, east of Bogota; and they are 

 described below as a new species. 



In 1891, within a few weeks of each other, appeared descrip- 

 tions of a fish from Montevideo by Perugia, Steindachner, and 

 Holmberg. Perugia's name, Pseudocorynopoma, has priority. 

 Perugia recognized the relationship between Pseudocorynopoma 

 from Montevideo and Stevardia; one of whose synonyms is Cory- 

 nopoma. A pair of living specimens of this species was given me 

 by the a(|uariist. Mate, of Berlin; and many specimens of thi] 

 species and of the new species described below were collected for 

 the Carnegie Museum by Mr. Haseman. 



In 1894, Cope secured a peculiar little fish from the Jacuhy 

 in Rio Grande do Sul, which he described as Diapoma specidi- 

 ferum. I am indebted to the authorities of the Philadelphia 

 x^cademy of Sciences for the privilege of examining this type. 



In 1908, Rebeiro described a fourth species, Coehirichfhys 

 iporangce, from southeastern Brazil. Its relationships were not 

 pointed out by Rebeiro. Dr. Rebeiro kindly lent me the type, 

 and Dr. Haseman collected many specimens for the Carnegie 

 Museum. 



In 1911, I described Hysteronotus megalostomiis from the Rio 

 das Velhas, a tributary of the Rio San Francisco, and three species 

 of Ghnididocaiida. melanogenys, tnequalis, and melanopleura, 

 from southeastern Brazil. All of them were collected by Mr. John 

 Haseman for the Carnegie Museum. 



In December, 1912, I described three species of Gephyrocharax. 

 chocoensis, cancan iis, and melanodieir , which I had collected in 

 transandean Colombia. A fourth species of this genus was de- 

 scribed by Meek as atticaiiclata from the Canal Zone. Dr. Meek 

 kindly lent me three specimens of his species. 



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