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Bashford Dean Memorial Volume 



random, and the spots are distinct because the ground color is a light-brown. In the small 

 male specimen of H. quoyi the ground color is paler than in the adult female, so that the 

 spots are everywhere clearly visible. I do not find in either specimen the ""five or six 

 rather indefinite transverse bands" mentioned by Garman (1913). The spots on the 

 dorsal surface are distributed at fairly regular intervals in such fashion that when in- 

 distinct they might suggest broad transverse stripes; but such stripes would be more 

 numerous than those described by Garman. 



Text-figure 17. 

 Jaws and teeth of Heterodontus quoyi, in lateral view. The original 

 is labelled Centracion quoyi. 

 After Garman, 1913, Atlas, Fig. 1, pi. 47. 



Jaws axd Teeth. — In Carman's figure (1913j showing the jaws of H. quoyi in 

 lateral view (my Text-figure 17) the upper jaw projects anteriorly beyond the lower jaw, 

 as in his figure of the jaws of H. phillipi drawn from the same aspect. Both jaws appear 

 very strong. 



Some samples of both anterior and posterior teeth of H. quoyi are described and 

 sketched by Freminville; but Garman (1913, Atlas, Figs. 1 to 3, pi. 47) portrays the entire 

 dentition of both jaws. Authors agree that the anterior teeth are sharp and tricuspid, 

 with the middle cusp prominent. Garman records that the ''molar" teeth are elongate, 

 narrow, each with a longitudinal ridge or keel. In Carman's drawings the upper jaw has 

 11 transverse rows of anterior (cuspidate) teeth and 8 rows (4 on each sidej of posterior 

 (grinding) teeth, making 19 rows in all. The lower jaw has 9 rows of anterior (cuspidate) 

 teeth and 6 rows (3 on each side) of posterior (grinding) teeth, making 15 rows in all. In 



