232 



looking upward. Posterior nostril just behind nasal barbel. A 

 maxillary barbel near the end of the upperlip, a mandibu- 

 lary one near the corner of the mouth and two mental ones 

 between the mandibulary barbels. Lateral fold at the corner of 

 the mouth may be produced in a short barbel. Eye covered 

 by skin. Origin of first dorsal above or. behind origin of pec- 

 torals, both with a spine, serrated at both borders. Origin of 

 second dorsal before or above origin of ventrals. It is many- 

 rayed as the anal, both are confluent with the caudal. Ventrals 

 with 10 12 rays. Pectorals with a denticulated spine. Teeth 

 in the upperjaw more or less conical, on the vomer molarlike, 

 in the lower jaw mixed. Lateral line more or less conspicuous. 

 An axillary porus. The second and third branchial arches 

 with a series of long cartilaginous processes, covering the base 

 of the gill laminae, on the sides facing each other. The gill- 

 membranes are united to the broad isthmus along their median 

 line. A conspicuous dendretic organ between anus and anal. 



i. Cnidoglanis nudiceps Gthr. 



Cnidoglanis nudiceps Giinther, Challenger Reports, Zool. VIII. Shore Fishes, 

 1883, p. 49. 



Fig. 92. Cnidoglanis nudiceps Gthr. (After the type in the British Museum). 



Height about n, head about 7, depressed, small, its length 

 being equal to its distance from the vent. Its occipital region 

 osseous, not covered with loose skin. Eye 5 1 / 2 , shorter than 

 snout, nearly 3 times in postorbital part of head. Lower lip 

 not pendent nor fringed, lateral fold at the corner of the mouth 

 not produced in a barbel. The nasal and maxillary barbels 

 do not extend to the end of the head. First dorsal lower 

 than the body and placed at a very short distance from the 

 occiput, its spine serrated in front and behind, as long and 

 strong as that of the pectoral fin. Maxillary teeth conical, in 

 two small, subtriangular patches; vomerine teeth more obtuse, 

 in two series, which form a subcrescentic band. Mandibulary 

 teeth in a band. Isthmus between the branchial membranes 

 comparatively broad, broader than the interorbital space. 



