GILBEUT AND STARRS — FISHES OK PANAMA BAY I'j 



i6. Zapteryx xyster {Jordan <C- Evermann). 



Kniiwii niilv liuiii ilic tvpc .specimens, collected hy I'luf. !•'. II. Miadiey at 

 I'.-Iii;iiii:i, ill l.Slili. 



Family KA.IID.K. 



17. Raja equatorialis (Jordan <£• Bolluiun). 



KiK.wii only from the type, wliicli was ilredi^ed ijy the " Aliiatros.s " in ISSH, 

 at Stalioii •J7!»7, in liic liny of Panama, at a depth of tliirty-tliree fathoms. 



Family NARCOBATID.E. 



18. Narcine entemedor {.Jordan .f- SlaHx). 



Not rare at Panama; live .-specimens seen in the market. ()l}tained al.so Ijy 

 Dr. (lilbert at Panama, in 1883. 



The interorhilal widlli is less than ,<;'iven in the original description. The 

 least width of frontal cartilage between the eyes is contained three times in the 

 preocular portion of snout; the distance between the eyes IJ. The longitudinal 

 diameter of the eyeballs, which somewhat protrude, equals or slightly exceeds the 

 diameter of the spiracle. The spiracle is horseshoe-shaped, the eye entering its 

 anterior border; everywhere except in front it is surrounded by a raised border 

 which bears a single scries of small tubercles. Series of pores are conspicuous on 

 ui)per surface of snout, each pore often surrounded by a dark ring; a j)air of much 

 larger pores near middle line behind spiracles. 



A deep fold of integument surrounds the lower jaw posteriorly, growing very 

 low as it surrounds angle of mouth, and passing anteriorly to join the base of the 

 frenum of the nasal valve. Laterally it is concealed by a still ileeper fold, which 

 overlajis it postero-laterally and is continuous anteriorly with the inferior na.sal valve. 



19. Discopyge ommata {Jordan d- Gilbert). 



Not seen by the expedition. First taken by Dr. Gilbert at Panama, in 1882. 

 The type is from "Albatross" Station 2795, in the Bay of Panama, at a depth of 

 thirty-three fathoms. 



Family DASYATIDJ-l 

 20. Urolophus halleri {Cooper). 



Not seen in 1896, but reported on previous occasions. U. umbrifer Jordan 

 and Starks is one of the many color forms of this species. U. nebulosus has been 

 ascribed to Panama (Jordan & Evermann, 1896, p. 81), but no authentic record of 

 its occurrence can be found. 



