340 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



Genus HYPNOS Dumeril 



Hypnos DvutsiL, Rev. Mag. Zool., ser. 2, vol. 4, p. 277, 1852. (Type, Hypnos 



subnigrum Dumeril, monotypic. ) 

 Hypnarce Waite, Rec. Austral. Mus., vol. 4, p. 180, 1902. (Type, Hypnos suini- 



grum Dumeril, virtually. Hypnarce "Waite proposed to replace Hypnos 



Dumeril, supposed preoccupied by Hypna Hiibner in Lepidoptera.) 

 Hypnarea Sharp, Zool. Record, vol. 39, 1902, index, p. 9, 1903. (Type, Hypnos 



subnigrnm Dumeril.) 



Disk broader than long. Tail short. Eyes small. Mouth mod- 

 erate, not protractile, preoral region short. Teeth small, numerous, 

 tricuspid, in rather wide bands. Gill openings small. Spiracle 

 large, close behind eyes, fringed. Large electric organ between head 

 and each pectoral. Dorsals two, small, above ventrals. Caudal 

 small. Ventrals large, united. Vent far behind middle of total 

 length. 



HYPNOS SUBNIGRUM Dumeril 



Hypnos subnigrnm Dumeril, Rev. Mag. 25ool., ser. 2, vol. 4, p. 279, pi. 12, 1852 

 (type locality: Sydney, New South Wales) ; Hist. Nat. Elasmobr., vol. 1, 

 p. 520, 1865 (types). — GiJNTHEai, Cat. Fishes British Mus., vol. 8, p. 453, 

 1870 (West Australia). — Macieay, Proc. Linn. Soc. New South Wales, vol. 

 5, p. 310, 1880 (Port Jackson; West Australia) ; vol. 6, p. 374, 1881 (Port 

 Jackson; West Australia). — Woods, Fish. Fisher. New South Wales, p. 100, 

 1882.— Macleat, Proc. Linn. Soc. New South Wales, vol. 7, p. 12, 1883 

 (Port Jackson). — Haswell, Proc. Linn. Soc. New South Wales, vol. 9, p. 

 104, pi. 11, figs. 6-9 (skeleton), 1884.— Oon^BY, Cat. Fish. New South Wales, 

 p. 5, 1886; Cat. Fishes Australian Mus., pt. 1, p. 16, 1888 (Clarence River, 

 Port Jackson).— Howes, Proc. Zool. Soc. London, 1890, p. 669, pi. 57 (vis- 

 ceral anatomy). — Waite, Mem. Australian Mus., vol. 4, p. 42, 1899 (New 

 South Wales) ; Mem. New South Wales Nat. Club, No. 2, p. 10, 1904.— 

 ZiETz, Trans. Roy. Soc. South Australia, vol. 32, p. 292, 1908. — Stead, Fishes 

 of Australia, p. 233, 1908 (New South Wales).— McCtjlloch, Proc. Linn. 

 Soc. New South Wales, vol. 46, pt. 4, pi. 38, figs. 3-4, 1921.— Fowler, Proc. 

 4th (1929) Pacific Sci. Congr., Java, p. 499, 1930 (reference). 



Hypnos subniger Ogilby, Mem. Queensland Mus., vol. 5, p. 83, 1916 (Moreton 

 Bay and South Hill). 



Hypnarce subnigrnm Waite, Mem. Australian Mus., vol. 4, p. 42, 1899 (off 

 Newcastle Bight and Shoalhaven Bight, 11-48 fathoms). — Garman, Mem. 

 Mus. Comp. Zool., vol. 36, p. 304, 1913 (Sydney and West Australia).— 

 McCuLLOCH, Proc. Linn. Soc. New South Wales, vol. 46, pt. 4, p. 467, 1921 

 (New South Wales ; Great Australian Bight ; Port Jackson and Clarence 

 River estuary; Rottnest Island, West Australia). — Waite, Rec. South Aus- 

 tralian Mus., vol. 2, No. 1, p. 28, fig. 41, 1921. — McCitlloch, Fishes New 

 South Wales, ed. 2, p. 10, pi. 3, fig. 33a, 1927. 



Hypnarce subnigra Waite, Rec. Australian Mus., vol. 4, p. 180, 1902 (Rottnest 

 Island, West Australia). — McCuixoch, Proc. Linn. Soc. New South Wales, 

 vol. 46, p. 457, 1921. — McCulloch and Whitley, Mem. Queensland Mus., 

 vol. 8, pt. 2, p. 129, 1925 (reference). 



Depth 7l^ to 11% to end of tail ; head 33^ to 41/3, disk width 1% 

 to 1% its length. Snout 2 to 2% in head; eye very small, 4% to 5 in 



