34 CAHFOKNIA ACADEMY OF SCIENCES 



Head 3^ or 3! in length; distance from tip of snout to origin of dorsal, 2^; distance between 

 dorsals 3f or 3f. Interocular space 2 in head; width of mouth, measured at outer angle of lips, 2^ or 

 2f ; length of dorsal spine i^ to i| in head; upper caudal lobe i^; longest anal ray 2^; ventrals 2 or 

 2^. The retrorse teeth on inner border of dorsal and pectoral spines are minute, irregular, crowded. 

 The maxillary barbels extend to distal fourth of pectoral spine; outer mental barbels to its middle, 

 inner mental barbels to its base. The fontanel groove fails to reach the base of the occipital process by f 

 the diameter of the eye. The palatine patches of granular teeth are wider than figured by Eigenmann, 

 the two separated by a distance equal to or slightly in excess of the diameter of the eye. The patches 

 vary in size and shape in the two specimens, and on opposite sides of the same individual. In one 

 specimen are two detached teeth laterally on the head of the vomer, on one side only ; none in the 

 other specimen. 



In addition to the other cliaracters ah'eady noted, Catliorops differs from 

 Tachysurus in the absence of the patch of coarsely granular teeth along the inner 

 border of the sj^mphysial portion of the mandibular band. 



Family SYMBRANCHID^. 



53. Symbranchus marmoratus Block. 



Abundant in a fresh-water pond at Miraflores, where it is trapped for food. 

 As none could be taken with the seine, it seems probable that the species burrows in 

 the mud. The few specimens secured were all brownish, variously marbled with 

 yellowish. 



Family LEPTOCEPHALID^. 



54. Congrellus gilberti Douglass-Ogilby. 



Congrellus gilberti Douglass-Ogilby, 1898, p. 288. 

 Ophisoma (?) halcaricum Gilbert, 1891(7, p. 349. 



Dredged by the "Albatross," Station 2797, Panama Bay, 33 fatlioms; recorded 

 by Gilbert as Oplihoma (?) hnlenricum. The species is based exclusively on Gilbert's 

 description above cited. The type specimens are deposited in the United States 

 National Museum. 



55. Congrellus nitens (Jordan £ Bollman). 



One specimen dredged by the "Albatross" in Panama Bay, Station 2799, 

 29i fathoms (Gilbert, 1890 i, p. 450). 



56. Congrellus proriger (Gilbert). 



A co-type of this species was dredged l)y the "Albatross" in Panama Bay, 

 Station 2799, 29^ fathoms (Gilbert, 1891a, p. 35). 



