The dwarf sawtail catshark (Galeus schultzi) is a little-known species of catshark, belonging to the family Scyliorhinidae, found exclusively in the deep waters off Luzon in the Philippines. Unlike other members of its genus, this slender, diminutive shark has a short, rounded snout and very short furrows at the corners of its jaws. It has indistinct darker saddles beneath each dorsal fin and two dark bands on the caudal fin, as well as a prominent crest of enlarged dermal denticles along the upper caudal fin margin. Taxonomy Renowned shark expert Stewart Springer described the dwarf sawtail catshark in a 1979 National Oceanic and Atmospheric Administration (NOAA) Technical Report. The type specimen is an adult male long, collected from Balayan Bay. It does not closely resemble more typical Galeus species, and its placement within the genus is not concrete. Distribution and habitat The dwarf sawtail catshark is endemic to Luzon in the Philippines. It is found on or near the bottom over the upper continental slope at a depth of , barring a single record from a depth of on the outer continental shelf. Description Reaching a length of , the dwarf sawtail catshark has a slim, firm body and a distinctively short, rounded snout. The nostrils are divided by triangular flaps of skin on their anterior rims. The horizontally oval eyes are placed somewhat high on the head, and equipped with rudimentary nictitating membranes (protective third eyelids). There are low ridges beneath the eyes, and tiny spiracles behind them. The large, wide, arched mouth bears very short furrows at the corners. There are 48 tooth rows in the upper jaw, and fewer in the lower jaw; each tooth has a narrow central cusp flanked by lateral cusplets. There are five pairs of gill slits. The two dorsal fins have rounded apexes and are similar in size; the first originates over the aft portion of the pelvic fins, and the second over the aft portion of the anal fin. The pectoral fins are large and wide. The pelvic and anal fins are short and low, with angular corners. The base of the anal fin measures 10–11% of the total length, longer than the distances between either the dorsal fins or the pelvic and anal fins. The caudal peduncle is nearly cylindrical and leads to a low caudal fin with an indistinct lower lobe and a ventral notch near the tip of