338 BULLETIN 10 0, UNITED STATES NATIONAL MUSEUM 



HETERONARCE MOLLIS (Lloyd) 



Narcine mollis Lioyd, Rec. Indian Mus., vol. 1, p. 5, 1907 (type locality: Lat. 

 13°36'00" N., long. 47°32'00" E., Arabian Sea, in 130 fathoms) ; p. 8, 

 1907 (Gulf of Aden). — ANNAiNDAUE, Mem. Indian Mus., vol. 2, pi. 3a, figs. 3 

 (mouth), 3a (teeth), 1909.— Lloyd, Mem. Indian Mus., vol. 2, p. 144, 1909 

 (type) ; Illustr. Zool. Investigator, Fishes, pi. 46, figs. 1-la, 1909 (type). — 

 Gaeman, Mem. Mus. Comp. Zool., vol. 36, p. 302, 1913 (compiled). 



Head to spiracle 7% to end of tail; disk length 1%- Snout 1% 

 in head to spiracle; orbit 3I/3, 2^^ in snout, 1% in firm part of 

 interorbital ; mouth width ly^ in head to spiracle; teeth in 10 to 12 

 rows in both jaws, front ones with triangular flat surfaces, hind 

 ones with sharp median cusp; nasal flap length 1% in internarial; 

 interorbital over firm area 2 in head to spiracle. Spiracle close 

 behind and equals eye. Round disk margin, along sides of tail, over 

 snout, openings of mucous pores symmetrically arranged. 



First dorsal inserted just behind ventrals, length 1% in head to 

 spiracle; second dorsal length 1%; caudal 41/10 ii^ rest of body length; 

 rounded pectorals form evenly rounded broad ovoid disk, width 

 equal to its length; ventrals not notched; vent slightly nearer front 

 snout edge than tip of tail. 



Dark brown above, grayish brown below. (Lloyd.) 



Arabian Sea. 



HETERONARCE GARMANI Regan 



Heteronarce gwrmani Regan, Ann. Mag. Nat. Hist., ser. 9, vol. 7, p. 414, 1921 



(type locality: Natal).— Giloheist, Marine Biol. Surv. South Africa, Spec. 



Rep. pt. 3, p. 50, 1922 (off Durban). — VonBonoe and Swart, Marine Biol. 



Surv. South Africa Rep. pt. 3, 1922, p. 4, 1924 (compiled). — Barnard, Ann. 



South African Mus., vol. 21, pt. 1, p. 92, 1925 (Natal, in 120 fathoms) ; pt. 2, 



p. 1016, 1927 (note). 

 Narcine garmani Fowler, Proc. Acad. Nat. Sci. Philadelphia, 1925, p. 193 (type 



of Narcine natalensis). 

 Heteronarce regani VonBonde and Swart, Marine Biol. Surv. South Africa Rep. 



pt. 3, 1922, p. 14, pi. 22, fig. 2, 1924 (type locality: off Natal, in 115 to 180 



fathoms). 

 Narcine natalensis Fowler. Ann. Natal Mus., vol. 5, pt. 2, p. 198, fig. 2, 1925 



(type locality: East London). 



Head 5l^ in total length. Snout to eye 8i/^ in total length; eye 5 

 in snout, 3 in interorbital; mouth small, nearly straight, width 3 in 

 snout; preoral length 8 in total length; front narial valves short, 

 within small flap covering mouth, hind edge of which irregular; 

 interorbital IYq in snout, depressed, orbital edges elevated so eyes 

 protrude. 



First dorsal length IjV ii^ snout; second dorsal length 1; caudal 

 IYq in head; pectorals form subcircular disk, wide as long, width 

 1^^ in total length ; outer ventral edges convex. 



