FISHES OF THE PHILIPPINE ISLANDS AND ADJACENT SEAS 297 



Squalus scmisagittatus Shaw, General zoology, vol. 5, p. 361, 1804 (type 



locality: Indian Seas). (On Yahla Russell, Fishes of Coromaudel, vol. 1, 



p. 8, pi. 13, 1803 (Vizagapatam). 

 Pristis semisagittatus Swainson, Nat. Hist. Animals, vol. 2, p. 319, 1839 (on 



Russell). — MiJLLER and Henle, Syst. Beschr. Plagiostomen, p. 108, pi. 40 



mouth), 1841 (Coromandel, Mediterranean). — Cantor, Journ. Asiatic Soc. 



Bengal, vol. 18, p. 1389, 1849 (Pinang, Singapore, Malay Peninsula). — 



Gray, List fish British Mus., p. 91, 1851 (India). — Bleeker, Verh. Batav. 



Genootsch. (Plagiost.), vol. 24, p. 53, 1852 (Batavia and Samarang) ; 



(Bengal), vol. 25, p. 9, 1853 ( reference ) .—Day, Fishes of Malabar, p. 272, 



1865. 

 Pristis semisagittatus Dum^bil, Hist. Nat. Elasmobr., vol. 1, p. 477, pi. 9, figs. 



C-6a (saw), 1865 (Mer des Indes). 

 .' Pristobatus emarginatus Blainvttxk, Bull. Soc. Philom., Paris, vol. 8, p. 121, 



1816 (name only). 



Depth 11% to subcaudal origin; head 2%, width at front of 

 spiracles 4I/3. Kostrum long, slender, tapers very gradually, teeth 

 23 + 24, narrowly triangular, with inner subbasal barb, not extending 

 on basal fourth of rostrum; eye 2% in interorbital ; mouth width 

 slightly greater than interorbital or 6^/5 in head; teeth in 62 rows; 

 nostril oblique, larger than eye, 2% in interorbital; interorbital with 

 superciliary regions little convex, higher than broad median con- 

 vexity, width 61/2 in head. 



Skin smooth. 



First dorsal inserted behind ventral base, long as high or 4 in head ; 

 second dorsal little higher than long, 41/10 in head; subcaudal ll^ 

 in caudal, which 2% in head; caudal peduncle depth % its width 

 which 21/5 in interorbital ; pectoral 31/5 in head, long as wide ; ventral 



3%. 



Dark drab or neutral gray above, below whitish. Borders of fins 

 and lateral fold of tail whitish. Iris dark gray. Rostral teeth all 

 pale. 



Red Sea, India, Ceylon, Malay Peninsula, Pinang, East Indies, 

 Cochin China. 



1 example. A.N.S.P. Bombay. Dr. F. Hallberg. Length, 615 mm. 



Family RHINOBATIDAE 



Body depressed, sharklike, disk passing gradually into long, 

 strong, depressed tail. Disk tapers forward, wide behind. Snout 

 produced, not toothed on edges. Orbit with fold below eye and 

 projecting shield above pupil. Teeth in pavement, small, numerous. 

 Nostrils oblique, each valve in three sections, an outer and an inner 

 separated by elongate lobe. Spiracle large, close to eye. Skin nearly 

 smooth or with warty tubercles, without conspicuous spines. No 

 electric organs. Dorsals two, well developed. Caudal moderate or 



