Fishes of the Western North Atlantic 201 



7a. No labial furrow on either jaw, or around corner of mouth. 

 8a. Mouth broadly distensible, with vertical folds at corners; 

 stomach inflatable with air; anal only about as long as and 

 dorsal, its origin under origin of latter; body sector of 

 trunk to cloaca considerably longer than tail sector. 



Cephaloscyllium Gill, 1862. 

 Eastern Pacific from middle Cali- 

 fornia to Chile; Japan, Australia, 

 Tasmania and New Zealand re- 

 gion; South Africa. 



8b. Mouth not distensible, without vertical folds at the cor- 

 ners; stomach not inflatable with air; anal more than 1V2 

 times as long as 2nd dorsal, its origin anterior to origin of 

 latter by a distance equal to at least V2 the length of its 

 base; body sector of trunk to cloaca considerably shorter 

 than tail sector. Holohalaelurus Fowler, 1934. 



South Africa, Natal. 



7b. A labial furrow around corner of mouth and extending for- 

 ward for a longer or shorter distance on each jaw. 

 9a. Anterior margin of nostril expanded as a flap, overlapping 

 front edge of mouth; no definitely outlined lower nasal 

 flap; a shallow groove extending at least part way from 

 nostril toward mouth (Fig. 31). 



lOa. A groove extending from nostril to mouth; anterior 

 flaps of the 2 nostrils not separated by a definite 

 gap opposite symphysis of upper jaw, their outlines 

 nearly straight; anal larger than 2nd dorsal, its base 

 wholly anterior to base of latter; origin of ist dorsal 

 behind rear end of base of pelvics; fold below eye 

 hardly defined, if at all. 



HaploHepharus Garman, 19 13. 

 South Africa. 

 lOb. Nasal grooves not extending to mouth; anterior nasal 

 flaps widely separated, their outlines, as well as out- 

 lines of intervening isthmus, forming 3 rounded 

 lobes; anal at least no larger than 2nd dorsal, the 

 rear end of its base under midpoint of latter; origin 

 of 1st dorsal in front of rear end of base of pelvics; 

 a strongly developed fold below eye. 



A telomycterus Ga.rma.n, 19 13. 

 China, Indo-China, Siam, Malaysia, 

 Philippines, India. 



