1905.] NATURAL SCIENCES OF PHILADELPHIA. 471 



of snout, and nasal barbel situated between, posterior pair a little more 

 remote from each other than space between anterior pair. Anterior 

 internasal space about If in interorbital space. Top of head convex, 

 and fontanel continued to interparietal region. Occipital process not 

 joining dorsal process. 



Gill-opening broad, membranes not free from isthmus, and extending 

 anteriorly about first f of snout. Rakers 3 + 8, slender, pungent, with 

 flexible tips, and longest longer than filaments or about 2 in interorbital 

 space. Knob on shoulder-girdle prominent. Isthmus broad. 



Body covered with smooth slcin. Traces of coriaceous-like longi 

 tudinal papillse on head above. Disk laminae on chest obsolete owing 

 perhaps to preservation. Humeral process with several rather coarse 

 strife. Lateral line continuous, sloping, and about midway on side of 

 caudal peduncle. 



Dorsal fin inserted about midway between tip of snout and origin 

 of adipose fin, spine robust, margins entire, and with a prolonged cuta- 

 neous tip. Dorsal rays graduated down from first which is longest. 

 Adipose dorsal small, inserted nearer base of caudal than base of last 

 dorsal ray. Space between dorsal and adipose dorsal with about 9 

 rather small spinous knobs, rounded and covered with adipose-like 

 tissue, though at least 5 or 6 still distinguishable in profile. Anal in- 

 serted a little before origin of adipose dorsal or a little nearer base of last 

 dorsal ray than base of caudal, and radii graduated down from first 

 branched ray which is longest. Pectoral inserted nearer origin of 

 dorsal than tip of snout, spine reaching about opposite base of first 

 dorsal ray, with a cutaneous point almost as long as first or longest 

 ray, and inner margin of spine with about 9 long antrorse spines. Ven- 

 tral inserted opposite posterior edge of base of dorsal, and reaching f 

 of space of anal. Genital aperture and vent well separated, near last 

 third in space between origin of ventral and anal. 



Color in alcohol brown, belly, breast and lower surface of head paler. 

 Caudal and dorsal with pale brown or whitish, otherwise dusky, and 

 other fins also marked with brownish. Maxillary barbel brown above, 

 pale or whitish below, and lower mental barl^els, like lower surface of 

 head. Iris slaty. 

 Length 4^ inches. 



Twenty-fom* examples, most of which represent a large series of 

 yo\mg. Two of the larger ones agree exactly with Dr. Steindachner's 

 excellent figiu-e,^ though they have the lamina on the thorax rather 



^* Glyptosternum kukenthali Steindachner, Abhand. Senck. Nat. Ges. Frankfurt, 

 XXV (2), 1901, p. 448, PI. 18, figs. .5, 5a. Aus dem Baram-Flusse, Borneo. 

 (Herr Prof. Kiikenthal.) 



