28 



MR. G. A. BOULENGER ON FISHES COLLECTED [Mar. 1, 



1. P. suborbitalis, C. & V. 



2. P. huoMeyi, Blgr 



3. P. iws««, Kner 



4. P. hilarii, Rhdt 



5. P. affi7iis, Stdr 



Height of body 

 contained in 

 total length. 



More than six 



times. 

 Less than six 



times. 



21. Characidium fasciatum, Rhdt. 



Characidium fasciatum, Reinh. Overs. Vidensk. Forh. 1866, p. 56, 

 pi. ii. figs. I, 2. 



D. 11. A. 8. V. 9. L. lat. 36-37. L. transr. |. 



The height of the body equals the length of the head, and is 

 contained four times and one third to four times and three fifths in 

 the total length (without caudal). Nasal openings widely separated 

 from each other, as in the types (one of which, presented by Prof. 

 Reinhardt, is in the British Museum)'. Suboperculum rather 

 strongly produced and angular posteriorly. Snout and eye equal in 

 length, measuring about one fourth the length of the head. Origin 

 of the dorsal a little nearer the adipose fin than the end of the snout. 

 Pectorals extending to the base of the ventrals, which do not reach 

 the anal. Brownish (probably hyaline in life), with a broad silvery 

 band along the lateral line, and more or less distinct traces of ten 

 or eleven dark transverse bands on the body and tail ; a purplish 

 band across the base of the six posterior dorsal rays, a small round 

 blackish spot on the base of the caudal, at the termination of the 

 silvery lateral band. 



Total length 87 millim. 



Four specimens from Sarayacu. 



Dr. Steindachner (Sitzungsb. Ak. Wien, Ixxxvi. 1882, p. 78) men- 

 tions C. fasciatum from Canelos, and describes, from the same locality, 

 a new species, C. purpuratum (C. etheostoma, Cope ?), of which I 

 am sorry to find no specimens, 



22. Leporinus striatus, Kner. 



Canelos. 



23. PiABuciNA ELONGATA, sp. n. (Plate XXIII. fig. 2.) 

 Piabucina unitaniata (non Giinth.), Steind. Denkschr, Ak, Wien, 



xlvi. 1883, p. 41. 



D. 10. A. 12. V. 8. L. lat. 30. L. transv. 8. 



^ Steindachner's statement in his description of C. fasciatum (Sitzungsb. Ak. 

 Wien, Ixxiv. 1877, p. 559), " Entfernung der Narinen tou einander gering," is 

 somewhat surprising. 



