508 PROCEEDINGS OF THE ACADEMY OF [Jl^^lj; 



Pectoral spine similar to dorsal in length, a similar spinous band 

 along its upper anterior edge, posterior edge serrated. 



No color on sides, belly or breast. Top of head slightly tinged with 

 brown. A broad yellow band across the snout. Dorsal colorless 

 except for dark spots on the rays, arranged in 5 longitudinal rows. A 

 vestige of a sixth row on the tips of the first and second rays. The 

 rays of the caudal similarly spotted, the spots arranged in about 6 

 vertical rows, giving the appearance of 6 narrow l:)ars. The adipose, 

 anal, ventrals and pectorals plain. 



Head 4 in body; depth 3; D. I, 7; A. 7; Y. 6; P. 1.9. Lateral 

 plates f|. 



This species stands nearest to punctatus and truincatus. From both 

 it differs mainly in coloration. 



36. Hoplias malabaricus (Bloch). Tarcui. 



Thirteen specimens (31, 58, 107, 154, 196, 231). Estancia La Ar- 

 menia; Arroyo Carumbey; Asuncion; Rio Branco, Matto Grosso; 

 Arroyo Trementina ; Arroyo Chagalalina. 



37. Hoplerythrinus unitaeniatus Spix. Tarcui. 



Four specimens (57, 98, 99, 239). Estancia La Armonia; Rio 

 Branco, Matto Grosso. 



38. Pyrrhulina australe sp. nov. 



Pi/rrhulina semifasciata Boulenger. Trans. Zool. Soc. London, XIV, part 

 ll, 1S96 (not of Steindachner). 



Type No. 9.901 (254), 50 mm. Arroyo Trementina. 



Co-types No. 9,901, 21 specimens (254). 30-50 mm. Arroyo Tre- 

 mentina. 



Co-types No. 9,900, 13 specimens (227). 33-48 mm. Arroyo Chaga- 

 lalina, Laguna. 



This species is evidently closely related to P. semifasciatus, from 

 which it differs largely in coloration. A conspicuous jet-black band, 

 much narrower than the pupil, extends forward from the eye around 

 the tip of the low^er jaw. In these specimens preserved in formalin it is 

 not possible to say whether the band extends through the eye. No 

 distinct streak behind the eye on upper part of opercle. No spots or 

 streaks on the body. 



Head 4; depth 4-4^; Lat. 1., 20-23; D. 8-10; A. 10 or 11. 



Teeth of the dentary slightly larger at their lateral ends. 



Four specimens from Estancia La Armonia, Arroj'o Carumbey may 

 be referred to this species. They differ in coloration. The band 

 around the snout is continued back through the eye, where it is consid- 



