116 OSTARIOPHYST. 



2. Pcctofal spine nearly as long as the head. 

 Anal of 11) to 21 rays, the longest as long as or a little longer than the hase 



of tlic fill ; dorsal tilament extending to the adipose fin 5. bahiensis. 



Anal of 2-1- to 20 rays, the longest a little shorter than the base of the fin ; 



dorsal filament extending to the candal 6. filameniosus. 



B. Distanee from tip of snout to origin of dorsal :^ to y^ the length of the fish ; longest anal 

 lay much shorter than tlie base of the fin. 

 X\\o\ of 27 to .31 rays; vomerine patches of teeth united, about as large as 



the palatine patches, with which they are continuous 7. pinnimaculutus. 



Anal of 31 to 35 rays ; vomerine patches of teeth separated, nincli shorter than 



than the palatine patches, with which they are subcontinuous .... 8. bagre. 



1. .ffiluriclitliys panamensis. 



Ailiirichtlnjs paiutmensls. Gill, Proc. Ac. Philad. 1803, p. 172. 



.■Eliirichtliijs imclialis, Giinth. Cat. Fish. v. p. 179 (186i), and Trans. Zool. Soc. vi. 18G8, p. 476, 



t. 81. fig. 2. 

 ^E/aric/itbj/s panamensis (ivdrt.), Steind. Sitzniigsb. Ak.AVien, Ixxii. 1876, p. 561-, t. 2. figs. 3 & 4. 

 Frl'ichthys paiiamaiisis, Jord. & Everm. Bull. U.S. Nat. Mus. xlvii. 1896, p. 117. 

 Fclkhthijs panamensis (part.), Crilb. & Starks, Mem. Calif. Ac. Sci. iv. 1904, p. 20. 



]Je[)tli of body a little less than the length of head, which is 4 in the length of the fish. Hreadlh of head li 

 in its length ; snout a little longer than eye, the diameter of which is 4 in the length of head. Lower 

 jaw a little shorter than the upper ; vomerine patches of teeth separate, equal in length and breadth to 

 the palatine patches ; maxillary barbel extending to the ventral tin. 14 gill-rakers on the lower part 

 of the anterior arch. Head covere 1 with skin ; profile nearly straight from snout to dorsal (in ; occipital 

 process uncovered by skin, pitted, of nearly eijual breadth throughout, the lateral edges somewhat convex, 

 the posterior edge a little cnuirginate ; two halves of the process meeting in the middle liue at an angle 

 which is rather more than a right angle; lu'cadth of process equal to (or a little less than) its length and 

 .V the length of head. Dorsal I 7, the spine not bearing a long filament. Anal 20 (27), somewhat 

 produced anteriorly, the longest rays, when laid back, just reachiiig the end of the base of the flu. 

 Pectoral spine bearing a long filament ; veiitrals not reaching the anal. Caudal deeply forked. Caudal 

 peduncle twice as long as deep. Silvery, back bluish. 



II<(h. Pacific Coast of Panama (JJoiv). 



One specimen, type of yi. imclialis, 220 mm in lenj^th. 



2. ^lurichthys SCUtatUS, sp. n. (Tab. XV. fi-j^. 2 and Tab. XIX. tig 2.) 



^Elnrichlhiis panamensis (part.), Steind. Sitzinigsb. i\\\. AVieii, Ixxii. 1870, p. 5(;4, t. 2. figs. 3 & 4. 

 Felic/il/iijs pfnia/iiensis (ptirt.), (lilb. & Starks, I\iem. Calif. Ac. Sci. iv. 1904, p. 20. 



tJcpth of body a little less than th(> lenglli of head, which is 4 to 4] in the length of the fish. Breadth of 

 head 1| in its length ; snout huigcr than eye, the diameter of which is 4i to .1 in the length of the 

 liciid. ijower jaw a little shorter than the up|ier ; voiuerine patches of teeth united, considerably broader 

 tliiiM the palatine jiatchea ; maxillary liarliel extending nearly to the ventral fin or a little beyond. 

 J4 gill-rakers on the lower part of the anteridr arch. Head and occipital jirocess covered with smootli 

 skin (111 laruc specimens occipital region and ]irocess naked, rugose); iirnlile from end of fontanel to 

 oi'iLjin of dorsal convex ; occipital process shajied )iearly as in the preceding species, but considerably 

 broader than long (the breadth -_ or nearly -" the length of head) and with the two halves forming a more 



