Jordan and Evermann. Fishes of North America. 2263 



series of Avide-set teeth. Caudal fin black. (Gimther.) Panama; not 

 seen by us. (brevis, short.) 



Amblyopus brevis, GUNTHER, Proc. Zool. Soe. London 1864, 151, Panama ; GUNTHER, Fishes 



Centr. Aruer., 441, 1869. 

 Tyntlaates brevis JORDAN & EIGENMANN, I. c., 512. 



2598. TYNTLASTES SAGITTA (Giinther). 



Head 5f; depth 9|. D.VI,21; A. 21. Body and head elongate, com- 

 pressed. Maxillary reaching to behind eye; teeth subhorizontal, very 

 small. Scales becoming larger posteriorly. Caudal arrow-shaped, about 

 4 in body ; pectorals as long as ventrals, 2 in head. Grayish, sides and 

 under parts silvery ; an ovate gray spot before each dorsal ray ; caudal 

 grayish. (Giinther.) Length 9 inches. Coast of Lower California; 

 exact locality unknown, (sagitta, arrow.) 



Amblyopus sagitta, GUNTHER, Proc. Zool. Soc. London 1862, 193, "California," probably 



from Lower California. 

 Tyntlastes sagitta, JORDAN & GILBERT, Synopsis, 639, 1883 ; JORDAN & EIGENMANN, I. c., 512. 



831. GOBIOIDES, LacSpede. 

 (BAKRBTOS.) 



Gobioides, LACEPEDE, Hist. Nat. Poiss., il, 580, 1798 (broussonnetii) . 



Plecopodus, RAFINESQUE, Analyse de la Nature, 87, 1815 (broussonnetii) ; substitute for 



Gobioides, regarded as objectionable. 

 Ognichodes, SWAINSON, Nat. Hist. Class'n Animals, n, 183 and 278, 1839 (broussonnetii). 



Body greatly elongate, compressed behind, the scales very minute; 

 head small; eyes very small; mouth large, oblique, the lower jaw project- 

 ing ; gill openings moderate. Teeth in a band, those in the outer series 

 being very strong. Dorsal rays V to VII, 15 to 23 ; anal rays 16 to 23. 

 Dorsal fin low, continuous, the spines similar to the soft rays, but more 

 widely separated; the soft dorsal and the anal are joined to base of cau- 

 dal ; ventrals 45, united in a disk which is formed much as in Gobius. No 

 air bladder; no pseudobranchise. From Tcenloides (=Amblyopus) the 

 genus Gobioides is distinguished by the absence of barbels, the presence 

 of scales, and by the much smaller number of rays in its vertical fins. 

 Brackish waters of the Tropics, reaching a considerable size. (Gobius; 

 sidoS, resemblance.) 



a. Eye small, but evident; scales evident, larger behind. BROUSSONNETII, 2599. 



aa. Eye minute, not evident ; scales minute. PEEDANUS, 2600. 



2599. GOBIOIDES BROUSSONNETII, Lacepede. 



Head 5 (young) to 7 (adult); caudal 3i to 5; eye small but evident, 7 

 to 10 in head; interorbital space 1 to If diameter of eye. D. VII, 16; A. 

 1,16. Body elongate, mouth oblique, maxillary extending beyond eye; 

 teeth in bands, the outer series enlarged, shorter, and closer set than in 

 Gobioides peruanus; scales twice as large as in peruanus, those on anterior 

 part of body not imbricated, much smaller than those on posterior part, 



