“Sexto and last,” Conseil said, “the plectognaths, whose maxillary bone is firmly attached to the side of the intermaxillary that forms the jaw, and whose palate arch is locked to the skull by sutures that render the jaw immovable, an order lacking true pelvic fins and which consists of two families. Examples: puffers and moonfish.”
“They’re an insult to a frying pan!” the Canadian exclaimed.
“Are you grasping all this, Ned my friend?” asked the scholarly Conseil.
“Not a lick of it, Conseil my friend,” the harpooner replied. “But keep going, because you fill me with fascination.”
“As for cartilaginous fish,” Conseil went on unflappably, “they consist of only three orders.”
“Good news,” Ned put in.
“Primo, the cyclostomes, whose jaws are fused into a flexible ring and whose gill openings are simply a large number of holes, an order consisting of only one family. Example: the lamprey.”
“An acquired taste,” Ned Land replied.
“Secundo, the selacians, with gills resembling those of the cyclostomes but whose lower jaw is free-moving. This order, which is the most important in the class, consists of two families. Examples: the ray and the shark.”
“What!” Ned Land exclaimed. “Rays and man-eaters in the same order? Well, Conseil my friend, on behalf of the rays, I wouldn’t advise you to put them in the same fish tank!”