230 FISHES, LIVING AND FOSSIL 
Psammodus, Wapjos, sand, d8ovs, tooth (ed). 
Psephurus, yjdos, a little stone, odd, tail. 
Pseudopleuronectes, Weddos, false, rAevpdv, side, vyxtys, swimmer. 
Pterichthys, wrépvé, fin or wing, ixOvs, fish, 
Raja, classic name of skate. 
Rhabdolepis, fades, nail, A€ms, scale(d). 
Rhina, pivy, a rasp. 
Rhinobatus, fiva, Rhina, Baris, skate. 
Rhynchodus, pvyxos, snout, ddovs, tooth(ed). 
Scaphirhynchus, oxadiov, shovel, piyxos, snout. 
Scomberomorus, oxéuPpos, mackerel, poptov, part. 
Scyllium, oxvAvov, classic name of this shark. 
Selachii, veAdyn, shark. 
Semionotus, oypetov, a standard, v@ros, back. 
Silurus, classic name of fish. 
Siphostoma, oipwy, tube, ordua, mouth. 
Sirenoidei, sven, salamander, otdos, like. 
Squaloraja, sgualus, shark, raja, skate. 
Squalus, classic name of a shark. 
Squatina, a classic name of a sea-fish. 
Teleocephali, réAcos, entirely, daréov, bone, kepady, head. 
Teleost, réAcos, entirely, doréov, bone. 
Teleostomi, réAcos, entirely, daréov, bone, ordya, mouth. 
Titanichthys, tan, giant, ix@us, fish. 
Torpedo, classic name (from the root of Torpor, stupefy). 
Trachosteus, tpaxvs, rough, édoréov, bone. 
Trygon, tpvywy, the thorny ray. 
Urogymnus, oipa, tail, yiuvos, naked. 
Xenacanthus, évos, strange, dxavOa, spine. 
