422 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



DASYATIS FLUVIORUM Ogrilby 



Dasyatis fiuviorum Ogilby, Proc. Roy. Soc. Queensland, vol. 21, p. 6, 1908 (type 

 locality: Brisbane River, above tides). — McCutxoch, Biol. Res. Endeavour, 

 vol. 3, pt. 3. p. 103, pi. 16, fig. 1, pi. 17, fig. 2, 1915 (Brisbane River and 

 Port Jackson). — McCutxoch and Whitley, Mem. Queensland Mus., vol. 8, 

 pt. 2, p. 130, 1925 (reference). — McCtnxocH, Fishes of New South Wales, 

 ed. 2, p. 12, pi. 3, fig. 36b, 1927.— Fowleb, Proc. 4th (1929) Pacific Sei. 

 Congr., Java, p. 505, 1930 (compiled). 



Dasybatus -fiuviorum, Tosh, Marine Biol. Rep. Queensland, pi. 4, fig. 3, 1903. — 

 Garman, Mem. Mus. Comp. Zool., vol. 36, p. 394, 1913 (compiled). — Ogilby, 

 Commerc. Fish Fisher. Queensland, p. 45, 1915 (Moreton Bay) ; Mem. 

 Queensland Mus., vol. 5, p. 130, 1916 (Nerang Creek; Great Sandy Strait; 

 Moreton Bay). 



Toslda fiuviorum Whitley, Rec. Austral. Mus., vol. 19, No. 1, p. 60, 1933 (refer- 

 ence). 



Trygon pastinaca (not Linnaeus) Macleay, Proc. Linn. Soc. New South Wales, 

 vol. 2, p. 366, 1878 (Port Darwin). — GIjntheb, Rep. Voy. Challenger, vol. 

 1, pt. 6, p. 37, 1880 (Arafura Sea). — Macleay, Proc. Linn. Soc. New South 

 Wales, vol. 6, p. 377, 1881 (Port Darwin; Port Jackson). — Ogilby Cat. 

 Fishes Australian Mus., pt. 1, p. 19, 1888 (Port Jackson). — Kent, Great 

 Barrier Reef, p. 267, 1893 (Queensland). 



Head to liind spiracle edge Si/o in total length. Snout 1% in 

 head to hind spiracle edge, seen above snout forms obtuse angle slight- 

 ly projecting beyond front contour; eye 6, 4 in snout, 3% in inter- 

 orbital; mouth width equals internarial between front nasal angles, 

 jaws undulated ; lower lip corrugated ; upper jaw succeeded by wide, 

 fimbriated, membranous flap, bearing 30 cilia on free border ; mouth 

 floor with 7 papillae in 3 groups; free edge of nasal flap minutely 

 fringed; interorbital 1% in head to hind spiracle edge. Spiracles 

 close behind eyes, little larger, interspace about equals interorbital. 



Row of small, open, mucigerous papillae between snout tip and 

 frontal depression; each preorbital group with much larger group, 

 extending backward above and below eye and united to rostral sys- 

 tem by oblique series of single pores ; small, irregular cluster outside 

 and partly anterior to preorbital group; semicircular series either 

 side of and pair transversely within occipital depression; crescentic 

 biserial band of subcutaneous tubular pores below and well outside 

 eye ; similarly situated oval cluster below spiracles. Small group of 

 blunt tubercles above each spiracle, from which more or less ex- 

 tended series curves forward along superciliary edge ; transverse row 

 of 3 tubercles behind occipital depression, from behind middle one 

 series of retrorse spines extends along dorsal ridge and continues 

 on tail nearly to caudal spine base ; 1 of median interscapular spines 

 slightly larger than others of vertebral series; entire scapular region 

 tuberculigerous, central group quinqueradiate, one branch directed 

 forward along and converging on axial series, 2 directed outward to 

 level with spiracle and 2 backward but somewhat divergent from 



