_Helicolenus_ differs from _Sebastiscus_ only in the total absence of air-bladder. The species are all bright crimson in color, very handsome, and live in deep water. _Helicolenus dactylopterus_ is rather common in the Mediterranean, and is sometimes taken in the Gulf Stream, and also in Japan, where two or three other species occur. _Neosebastes_ is much like _Sebastodes_, but the suborbital stay bears strong spines and the dorsal is very high. _Neosebastes panda_ is found in Australia, and _N. entaxis_ in Japan. _Setarches_ is distinguished by the cavernous bones of its head. Species are found in both the Atlantic and Pacific in deep water. Several other peculiar or transitional genera are found in different parts of the Pacific. [Illustration: FIG. 371.—Florida Lion fish, _Scorpæna grandicornis_ Cuv. & Val. Key West. ] In _Scorpæna_ the head is more uneven in outline than in _Sebastodes_ and _Sebastichthys_, skinny flaps are often present on head and body, the air-bladder is wanting, there are 12 dorsal spines and 24 vertebræ, and on each dorsal spine is a small venom-secreting gland. The species are very numerous, highly varied in color, and found in all warm seas, being known as scorpion-fishes or _Rascacios_. Two species, _Scorpæna scrofa_ and _Scorpæna porcus_, are common in the Mediterranean, being regarded as good food-fishes, though disliked by the fishermen. Of the numerous West Indian species, _Scorpæna plumieri_, _Scorpæna grandicornis_, and _Scorpæna brasiliensis_ are best known. _Scorpæna guttata_ is common in southern California and is an excellent food-fish. _Scorpæna mystes_ is found on the west coast of Mexico. _Scorpæna onaria_ and _S. izensis_ are found in Japan. Fossil remains referred to _Scorpæna_ are recorded from the Tertiary rocks. In the islands of the Pacific are numerous dwarf species less than three inches long, which have been set apart as a separate genus, _Sebastapistes_. The longest known of these is _Sebastapistes strongensis_, named from Strong Island, abundant in crevices in the corals throughout Polynesia, and much disliked by fishermen. [Illustration: _Fig. 372._—Sea-scorpion, _Scorpæna mystes_ Jordan. Mazatlan. ] The genus _Scorpænopsis_ differs from _Scorpæna_ in the absence of palatine teeth. It is still more fantastic in form and color. _Scorpænopsis cirrhosa_, _Scorpænopsis fimbriata_, and other species are widely distributed through the East Indies and Polynesia. The lion-fishes (_Pterois_) of the tropical Pacific are remarkable for their long pectoral fins, elongate dorsal spines, and zebra-like coloration. The numerous species are fantastic and handsomely colored, but their poisoned, needle-like spines are dreaded by fishermen. They lurk in crevices in the coral reefs, some of them reaching a foot in length.