230 



PROCEEDINGS OF THE ACADEMY OF 



[Apr., 



form, as I overlooked Oken, though he wrongly identifies^ the exam- 

 ples I recorded as Psectrogaster ciUatus within the genus Curimatus. 

 They are undoubtedly members of the genus Psectrogaster, as their 

 spinescent scales show, and cannot be identified with the diagnosis 

 he gives for the species Curimatus ciliatus, and this after he had 

 examined the type of Anodus ciliatus Miiller and Troschel in Berlin. 

 If this Species is found identical with Curimatus cyprinoides (Lin- 

 naeus), this latter name will, of course, supersede. Contrary to my 

 arrangement in 1906, I now believe my Ambyiacu and Upper Amazon 

 specimens to belong to Psectrogaster amazonicus Eigenmann and 

 Eigenmann. 



Subgenus CYPHOCHARAX Fowler. 



Back not elevated, but upper profile nearly straight from above 

 eye to near dorsal. Scales large, 36 or less in lateral line, and in 

 nearly even longitudinal series. 



Fig. 1. — -Osteoglossum bicirrhosuin Agassiz. (Young.) 



This diagnosis is recast, as the species I identified with the desig- 

 nated type is certainly different. 



Curimatus spilurus Gunther. 



One example 93 mm. 



CHILODIN^. 



Chilodus labyrinthicus rupununi subsp. nov. Fig. 2. 



Head 3f ; depth 31; D. iv, 9, i; A. iv, 7, i; P, i, 14; V, i, 8; scales 

 27 in 1. 1. to caudal base, and 4 more on latter; 5 scales above 1. 1.; 

 4 scales below 1. 1. to ventral origin; 3 scales below 1. 1. to anal origin; 

 about 8 predorsal scales; head width 1| its length; head depth at 

 occiput 1^; snout 3; eye 3|; maxillary 3^; interorbital 2|; first 



' Mem. Carnegie Mus., V, 1912, p. 269. 



