282 PROCEEDINGS OF THE ACADEMY OF 



spines serrate on the inner side. Dorsal spine serrate poste- 

 riorly on the distal half. Adipose spine without fin, stouter than 

 anal spine. Caudal fin furcate. 



Color olive (faded), a faint pale baud on each side; a large 

 black spot on distal part of dorsal rays. Caudal with four verti- 

 cal bars ; clavicle and operculum with blue reflections. Length 

 .051 m., depth .0155 m. 



CORYDORAS AMPHIBELUS, Cope, sp. nov. 



A species much like the last, but differing in its longer spines, 

 short muzzle, and numerous azygus shields, etc. Form the stoutest 

 in the genus, profile descending steeply from the dorsal fin to be- 

 low the nares, then concave, and descending to the narrow muz- 

 zle. Head three times in length lacking caudal, 1.4 times in depth. 

 Orbit 3 times in head, 1.6 times in interorbital width. Lateral 

 shields 21-19, four flat azygus. Radii D. I. T ; A. L 6 ; V. 6 ; P. I. 

 6, the spine serrate within. Dorsal spine serrate posteriori}^, elon- 

 gate, reaching the adipose spine when depressed. Adipose long 

 without fin, but shorter than the slender spine of the anal. Total 

 length .037 m.; depth .0124 m. 



Color light olive, face with blue reflections. Numerous small 

 black dots on the side shields, which are only wanting on the 

 middle line of the side. Dorsal with a black spot on the ends of 

 its radii, and another at the base of its spine. Caudal with four 

 vertical cross-bars. 



CORYDORAS PUNCTATTJS, Bloch. 



G. geoffroyi, Lacep. CallicMTiys punctatus, D'Orb. Cuv. Val. Giiuth. v. 

 229. 



Surinam, Monte "Video. 



CORYDORAS .ENEUS, Gill. 



Hoplosoma aneum, Gill., Ann. Lye. N. Y., 1851, p. 403. Callichthys, do. 

 Giintlier, 1. c. 



Trinidad, W. L 



I cannot learn the structure of the lips in this and the follow- 

 ing species : — 



CORYDORAS ARMATUS, Giinth. 



CallicMhys armatus, Gthr., Pro. Zool. Soc, Lond., 1868, p. 230. Fig. 1. 



Xeberos on the Huallaga, Peru. 



[February 13, 



