I 52 I 
Other species, like P. zysron and P. cuspidatus. have long and 
narrow saws, with up to 35 pairs of teeth. The largest of those 
exhibited measures 5 feet 7 inches. 
An uncanny looking monster is the Eastern Ox-Ray or 
Sea-Devil {Dkerobatis eregoodoo)* It has the flattened shape of 
the ordinary ray or skate, but is distinguished from the latter 
by a carious pair of * horns ' on either side of its head These 
projections are flexible in the living specimen and are said by 
their flapping motion to drive, the smaller Crustacea on which 
the fish feeds towards the mouth. Its teeth are only small and 
pavement-Hke. This fish inhabits the seas of India and the 
Malay Archipelago and reaches a width of 18 feet measured 
from tip to tip of the pectoral fins. The specimen exhibited was 
obtained near Malacca in 1889, and measures slightly over 12 
feet across. The Sea-Devil is quite harmless when left alone, 
though with its powerful fins it can do considerable damage 
when being captured. 
The Beaked Rays {Rhynchobatm attcylostomus and R. 
djeddensis) indicate in their shape an intermediate position bet- 
ween the Sharks on the one part* and the Rays, like the Sea- 
Devil, on the other. 
The Jast members of the group we have to mention are the 
Torpedoes or Electric Rays. Specimens of Astrape dipterygea 
are exhibited. They give electric shocks like the Electric EeL 
The rounded outline of their body distinguishes them readily 
from the rhomboidal shape of the ordinary Rays* 
For the inform ation of scientific visitors the ProtQchordata . 
may be mentioned before leaving the Fishes, AmpMoxus is re- 
presented by some young specimens from Raffles Lighthouse 
which in the year 1898 were collected and presented to the 
Museum by Mr, W. F. Lanchester and the late Mr, E. P. 
Bedford. They also gave a Balamglossus from Pasir Panjang. 
Ascidians, simple and compound, are of course common on the 
local coral reefs. The most common Simple Ascidian found 
there belongs to Polycarpa, Mr. W. Maclear Ladds presented 
in 1899 a magnificent specimen of the compound Ascidian 
Coietla, from a telegraph cable, lat, if' 11' S., long. 127' 30' E., 
depth 30 to 40 fathoms, and in 1904 some specimens of the sim- 
ple Ascidian Culeolus, also from a telegraph cable, 5 or 6 miles 
off Dana (New) Island, lat. lO'^ IS' S., long, 12 1' 17' E., depth 
350 fathoms- 
