412 Annals of the Carnegie Museum. 



Genus Osteogaster Cope. 5 

 49. Osteogaster eques (Steindachner). (Plate XXX, figs. 3, 3c.) 



Corydoras eques Steindachner, " Ichthyologische Beitrage," V, 1876, 92, pi. 12, fig. 



3-30 (Teffe; Cudajas). — Eigenmann and Eigenmann, Occasional Papers Cal. 



Acad. Nat. Sci., I, 1890, 466. 

 Osteogaster eques Cope, Proc. Am. Philos. Soc, XXXIII, 1894, 102. 



4226 I. U. M. One, female, 32 mm. Cudajas, a very poor specimen. 



50. Osteogaster splendens Castelnau. 



Callichthys splendens Castelnau, Anim. de l'Am. du Sud, Poissons, 1855, 39, pi. 18, 

 fig. 3 (Rio Tocantins). 



No specimens; known only from description and figure of Castelnau. 



Appendix. 



[After the foregoing paper had been set up and was ready to be 

 printed, the Editor received the following description of a new species 

 from Professor Eigenmann. It is appended to Mrs. Ellis' monograph 

 for the purpose of bringing our knowledge of the group herein treated 

 down to the moment of going to press, March 1, 1913. — Editor.] 



51. Hoplosternum magdalenae Eigenmann MS. 



Callichthys (Hoplosternum) thoracatus (non Cuvier & Valenciennes) Steindachner, 

 Zur Fish-Fauna des Cauca und der Fliisse bei Guayaquil, 1880, 14. (Cauca 

 near Caceres). 



The specimens mentioned by Steindachner are much lighter in 

 color and have the caudal spotted with dark, the base with a light bar, 

 followed in one specimen with an ill-defined darker band. He had 

 three specimens 7 cm. long. This species is quite distinct from 

 thoracatum and is most nearly like H. pectoralis Boulenger from the 

 Paraguay basin. 



Type, 107 mm. Soplaviento, U. S. of Colombia, C. M. No. 5081. 

 Paratypes, 59 specimens. Soplaviento, C. M. No. 5o82a-j; I. U. M. 



No. 12836. 

 Paratypes, one specimen, Calamar Cienega. C. M. No. 5083. 



Head to end of opercle 3-3.5 in the length; depth 3.5; D. I, 8; 



25 26 . 



A. 1,6. Plates — ; eye 6 in head to end of opercle, 4 in interorbital 



23 23 



6 Mr. Regan considers Osteogaster eques Steindachner to be a Corydoras allied to 

 nattereri and macrosteus. Osteogaster splendens Castelnau he considers to be a 

 member of the genus Brochis. 



