THE CATFISHES OF VENEZUELA — ^SCHULTZ 251 



of Bleeker (Atlas ichthyologiqiie . . . , vol. 2, p. 16, 1862), but the 

 type species have different names. 



Now Blocker {loc. cit.) apparently used a manuscript name of 

 Guichenot when he designated the genotype Paracetopsis hleekeri 

 Guichcnot of his new genus Paracetopsis. This is the first description 

 of P. bleekeri, and apparently it is valid, so the name must be accepted. 

 vSteindachner (Denkschr. Akad. Wiss. Wien, vol. 42, p. 99, pi. 8, fig. 2, 

 2a, 1879) described Cctopsis occidentalis from Guayaquil, Ecuador, 

 which agrees in dentition with hleekeri. Since no locality is given for 

 hleekeri, as first reviser I am referring occidentalis to Paracetopsis 

 hleekeri. Thus Paracetopsis Eigenmann and Bean becomes a synonym 

 of Paracetopsis Bleeker because they have the same species as geno- 

 type. Eigenmann (Rep. Princeton Univ. Exped. Patagonia, vol. 3, 

 p. 398, 1910) proposed the genus Cetopsogiton as a new name for 

 Paracetopsis Eigenmann and Bean, which he says is preoccupied; he 

 gave the type as Cetopsis occidentalis Steindaclmer. Thus Cetopso- 

 giton Eigenm.ann becomes a synonym of Paracetopsis Bleeker. 



Unfortunately, Eigenmann and Bean (op. cit., p. 665) m their key 

 do not define the other three genera {Cetopsis, Hemicetopsis, and 

 Pseudocetopsis) the same as Bleeker did, and from this confusion has 

 resulted. In the following key I have attempted to define the genera 

 accordmg to Bleeker's diagnoses based on the genotypes: 



KEY TO THE GENERA OF CETOPSIDAE 



la. Gill opening restricted to a slit mostly in front of pectoral fin base. 



2a. Teeth conical, in three rows on premaxiUaries and in one row on dentaries 



and on vomer; pelvic fins not united Cetopsis i" Agassiz 



2h. Teeth simple (probably all are incisors) in a single row on premaxillaries, 

 dentaries and on vomer; pelvic fins not united; anterior nasal openings 



much farther apart than posterior ones Hemicetopsis '^ Bleeker 



16. Gill opening wide, not restricted to in front of pectoral fin base but reaching 



a little farther below than above pectoral base; pelvic fins united to each 



other and to abdomen along their inner ray. 



3o. Teeth conical, in a band of 3 or 4 rows on premaxillaries and dentaries and 



transverse band on vomer interrupted in middle; anterior pair of nostrils 



a little farther apart than posterior ones Paracetopsis ^^ Bleeker 



35. Teeth conical, in a band of 2 to 4 rows on premaxillaries and dentaries, and 

 in 1 to 3 irregular rows on vomer, not interrupted in middle. 



Pseudocetopsis " Bleeker 



Genus CETOPSIS Agassiz 



Cetopsis Agassiz, in Spix, Selecta genera et species piscium . . . Brasiliam . . ,, 

 p. 11, 1829. (Type designated as Cetopsis coecvtiens Agassiz by Bleeker, 

 1862.) 



" GenotjTJC, Cetopnis coecutiens Agassiz. 



" Genotype, Hemicetopsis candira (Agassiz). 



'2 Genotype, Paracetopsis hleekeri Guichenot, in Bleeker^ Cetopsis occidentalis Steindaehner. 



" Genotype, Cetopsis gcbtoidcs Kner. The following species undoubtedly belong to this genas: Cetopsit 

 ventralis Gill; Cetopsis chalmcrsi Norman; Hemicetopsis macilentus Eigenmann; Hemicetopsis minutus 

 Eigenmann; Hemicetopsis othonops Eigenmann; Hemicetopsis amphihxa Eigenmann; Cetopsis plumbetu 

 Steindaehner. 



