Humpback smooth-hound the lower ones. The teeth have a main pointed cusp and sometimes smaller subsidiary ones. The first dorsal fin is approximately triangular and the trailing edge is fringed with bare, dark-coloured collagen rods known as ceratotrichia. The pectoral fins are large and the pelvic fins moderately so. The caudal peduncle is short and the lower lobe of the tail fin is hardly curved in adults. The colour of this shark is plain grey or greyish-brown without any spots or barring. The humpback smooth-hound is found in the eastern Pacific Ocean off the coast of Peru and Chile, between 1°N and
The Hound of the Baskervilles in "The Strand Magazine" in 1901. It was well-suited for this type of publication, as individual chapters end in cliffhangers. It was printed in the form of a novel the following year. "The Hound of the Baskervilles" has been adapted for many media. Over 20 film and television versions of "The Hound of the Baskervilles" have been made. "The Hound of the Baskervilles" has been adapted for radio for the BBC by Bert Coules on two occasions. The first starred Roger Rees as Holmes and Crawford Logan as Watson and was broadcast in 1988 on BBC Radio 4. Following its