190 CATALOG OF FOSSIL FISHES IN THE MUSEUM ' 



species which were collected by the late John F. Carll. They have 

 enabled us to draw up the following diagnosis. 



Revised description. — A species of small size, about 45 mm. in 

 length. Greatest depth of body just behind the pectoral arch, the 

 trunk tapering rapidly backward from this point. 



Dorsal and anal fins almost opposite, large, triangular, longer than 

 high, with rays which branch distally. Caudal strongly heterocercal, 

 the upper lobe being nearly twice the lower, the fin-rays slender, and 

 distally branching; pectoral fins moderately large, their principal rays 

 unarticulated; provided with minute, slender fulcra; ventral fins 

 short-based and about equidistant from pectoral and anal. Lateral 

 line present. 



From the above emended description it appears that this species 

 belongs to the genus Rhadinichthys rather than to Elonichthys, to 

 which we accordingly assign it. 



E 2092 Complete fish, 45 mm. in length, showing head and all fins. 



(PL 66, figs. I, 2.) 



E 2093 Imperfect fish, showing well the anal and dorsal fins. (PI. 



66, fig. 3.) 



E 2094 Complete fish, showing head in ventro-lateral aspect; pec- 

 toral, pelvic and anal fins. (Fig. 64.) 



E 2095 SmaU slab with the remains of several fishes. One specimen 

 in lateral aspect shows detail of all fins. 



E 2096 Slab with several fragmentary fishes showing cranial bones 

 and pectoral fins. On same slab is a scale of Rhadi- 

 nichthys alberti (Jackson). 



E 2097 Imperfect fishes on smaU slab. 



E 2098 Imperfect fishes on small slab. 



E 2099 Cranium, shown in inner view. 



E 2100 Imperfect fish. 



E 2101 Imperfect fish. 



E 2102 Imperfect fish. 



