SHORE FISHES OF GALAPAGOS ISLANDS 345 



Snout very short, 3.7 in width of mouth; angle of mouth to sym- 

 physis of lower jaw 1.33 in width of mouth; width of nostril 2.4 in 

 snout; eye longitudinally elongate-oval ; teeth in several series in each 

 jaw, the outer ones most nearly erect, but all inclined backward, es- 

 pecially the inner ones, which, in the upper jaw, are almost hori- 

 zontal ; all tricuspid, having a long slender median cusp and a much 

 smaller one on each side at base; nostrils with a double flap on inner 

 half of anterior edge forming a sort of tubular appendage ; posterior 

 gill-slit over the base of pectoral ; no grooves about the mouth. 



Length to base of caudal fin 911 mm.; snout to first dorsal 36; 

 first dorsal to second dorsal 39; second dorsal to caudal 10; upper 

 lobe of caudal 31 ; pectoral 20; base of first dorsal li in its height; 

 base of second dorsal equal to height; height of anal li in height of 

 second dorsal ; ventral i| in pectoral ; lower lobe of caudal 2 in upper 

 lobe. 



Color: dark uniform slate above, below livid-yellowish slate; tip 

 of first dorsal and of upper lobe of caudal creamy white. 



Family SPHYRNID^E. 



6. SPHYRNA TUDES (Cuvier). 



Zygana hides Cuvier in Valenciennes, Mem. Mus., ix, 225, 1822, Nice. 

 Sphyrna hides, Jordan & Evermann, Fishes North and Mid. Amer., i, 44 

 1896. 



Range. — Tropical parts of the ocean in general. 



We saw several small individuals of a Sphyrna^ probably 6'. tudes^ 

 in Tagus Cove, Albemarle, but we were not able to secure any 

 specimens. 



Family RHINOBATID^. 



7. RFIINOBATUS PLANICEPS Carman. 



Rhhiobatiis planiceps Carman, Bull. Mus, Comp. Zool., vi, 168, 1880, Peru ; 

 Calapagos. — Jordan & Evermann, Fishes North and Mid. Amer., i, 

 64, 1896. 



Range. — Coast of Peru ; Galapagos Islands. 



Numerous skates were seen about the Galapagos Islands, some of 

 which may have been this species, but we did not obtain any specimens 

 of it. Reported from the Galapagos Islands by the Hasslar expedition. 



Family DASYATIDiE. 



8. DASYATIS LONGA (Carman). 



T?ygo7i longa Carman, Bull. Mus. Comp. Zool., vi, 170, 1880, Acapulco ; 

 Panama. — Jordan & Evermann, Fishes North and Mid. Amer i 8;' 

 i8q6. ' ' ^' 



