296 VENOMS 
The pairs attached to the second anal spine are, as the direct result 
of the size of the latter, more developed than those of the other 
spines. 
In the Rascasse, the opercular spines of which are greatly 
developed, there is a rudiment of a poison-apparatus at the bot- 
tom of the sheath formed by the skin of the gills. 
The species of Pterois (fig. 105) are distinguished from those of 
Scorpena by their dorsal fins, the rays of which are very long and 
Fig. 106.—Pelor filamentosum (Family Triglide, Mauritius). 
curved backwards, above the membrane by which they are united. 
They are found in the Indian and Equatorial Pacific Oceans, and are 
very beautiful in colour, varying from reddish-brown to bright rose. 
The poison-apparatus of these fishes is situated in the dorsal fin, 
and is precisely similar to that of Scorpena. 
The species of Pelor (fig. 106) present greater resemblance to 
those of Synanceia, owing to their heads being crushed in in front. 
Their eyes stand up above the head and are very close together, 
which helps to give them an extremely ugly appearance. The skin 
is soft and spongy, and bristles with jagged fleshy shreds. 
