NO. 1482. ARGENTINA FISHES— EVERMANN AND KENDALL. 79 



15. PROCHILODUS PLATENSIS Holmberg 



SABALO. 



Procliilodiis pl((teiixif< Holjiberg, Kev. Argent. Hist. Nat., I, 1891, ]). ]8(), Rio de 

 la Plata. 



Holmberg- siiys that this is the most common "Sabalo" of Buenos 

 Aires, that it is caught with nets, is a common article of consumption, 

 its abundance making it cheap, and that it is prett}' good eating. 



There are some discrepancies between the description of this tish by 

 Holmberg and the notes taken on a single specimen from Rio de la 

 Plata, but on]}' such as can be accounted for by dili'erencc in size. 

 Holmberg's t3'pe was a little over 20 inches in length (52 cm.). 



Our specimen is about 12.5 inches. It is close to P, Jineatus 

 (Valenciennes), according to the description, but hick of material for 

 comparison prevents certainty regarding the identity of the two. 

 The following is a brief description of our specimen: 



Head 3.S8 in length without caudal; depth 3.05; eye 5.15 in head 

 without flap; interorbital 1.81; snout 3.16; length of pectoral 1.26 in 

 head; D. 11, its longest ray about 1.06 in head; A. 11, its longest 

 ra}" 1.91 in head; ventral nearly as long" as pectoral, 1.28 in head. 



Two series of close-set, weak, flexible teeth in each jaw; outer series 

 curved, teeth flat and sharp; inner series widely V-shaped, apex 

 directed inward, teeth dilated and crenulated at tips; teeth in both 

 series of lower jaw more closely set, overlapping each other and all 

 dilated at tips; inner series with a wide curve inward. 



16. PARODON NASUS Kner. 



Paro(io)ina.w.s Kner, Denks. Ak. Wiss. Wien, XVII, 1859, p. 167, "Cujabaflusse." — 

 Berg, Anal. JMns. Nac. Buenos Aires (2d ser., II), 1896-97, p. 280 (Rio Cuy- 

 aba, Republica Argentina [Provincias de Ccjrdoba, Tucuman y Salta]). 



Berg states that a study of specimens from the province of Salta 

 and an examination of the descriptions and flgures given by Cuvier 

 and Valenciennes, Reinhardt, and Liitken incline him to the opinion 

 that Parodon vasns Kner is a good species and not a synonym of 

 Parodon suhorhltalis Cuvier and Valenciennes; that his examples cor- 

 respond very well with Kner's dcsscription of P. va^m, with the excep- 

 tion that there are only 2 teeth instead of 3 on the ascending ramus of 

 the lower jaw, a peculiarity that he does not consider suflScient for the 

 establishment of a new species. 



He says that the figures given by Cuvier and Valenciennes, Rein- 

 hardt, and Liitken represent a rather graceful and slender form, while 

 his examples are very robust, plump, or broad, having the anterior 

 part of the back arched, the belly broad and nearly flat, and the caudal 

 end relatively deep. The fins, especially the pectoral, broad, and 

 somewhat falcate or emarginate, characters that the figures of P. suh- 

 Proc. N. M. vol. xxxi— 06 6 



