BARBOUR AND COLE: PISCES FROM YUCATAN. 155 



7- Spelerpes yucatanus Peters. 

 S. yucalanicus Boulenger. Cat. Batr. Grad. Brit. Mus., 1862, p. 72. 



One specimen from Chichen-Itza, taken, together with a single egg, in the 

 damp earth near a watering trough on March 7. 



PISCES. 

 1. Scoliodon terrae-novae (Richardson). 

 One specimen from Progreso. 



2. Sphyrna tiburo (Linne). 

 One specimen from Progreso. 



3- Urolophus jamaicensis (Cuvier). 

 One specimen from Progreso. 



4. Dasybatis hastata (DeKat). 



One specimen from Progreso. 



This species seems to be considered a favorite food fish. 



5. Felichthys marinus (Mitchill). 



Two specimens from the Gulf of Mexico at Progreso. 



6. Rhamdia depressa, sp. nov. 



Plate 1. 



Types. — Eleven examples, No. 29072, Mus. Comp. Zool. Ikil Cenote, near 

 Chichen-Itza, Yucatan, Leon J. Cole. 



Head 4|; D. 1, 6 ; A. 10. Body rather slender, more stout anteriorly than 

 posteriorly ; head rather large, flat, narrowed forward. Eye rather high up, 

 small, its diameter 6f in head. Teeth in bands. The maxillary barbel 

 reaches the base of the anal fin ; in some specimens it is rather shorter, but in 

 none longer. The mental barbel reaches about half-way to base of pectoral, 

 and the postmental considerably beyond the base of the pectoral fin. Origin 

 of spinous dorsal fin rather less than half way from origin of ventral fins to gill 

 opening. Length of base of adipose dorsal fin 3^ in total length. The caudal 

 fin is forked ; its lobes are rounded but somewhat narrow. Ventral fins in_ 

 serted below the posterior limit of the base of the spinous dorsal fin. 



Color uniform dull brown. The largest specimen of this series is about a 

 foot long. 



Field notes. Ikil Cenote is about three miles east of Chichen-Itza. It is 

 about 100 ft. in diameter, but on the east and south sides a projecting ledge 

 covers it for nearly a third of the distance. A sounding through a well in this 

 overhanging part gave 65 ft. to water, and 95 ft. depth of water. These silu- 



