692 



Bashford Dean Memorial Volume 



specimen (only 216 mm. or 8.5 inches long) one infers that it must have been recently 

 hatched. Brevoort's description of the color and color pattern follows : 



Its general color is of a pale sepia'like brown, darker on back and fins, with a pinkish 

 tinge on lower parts of the body. Irregular bands and large blotches of several shades of the 

 same brown are distributed from the pectorals to the caudal, grouped in five principal bands, 

 with smaller ones near the back between the first three large ones. The first of these last is 

 just back of the pectorals, the second back of the first dorsal and in front of the ventrals, 

 spreading laterally near the abdomen. The snout and cheeks are shaded also with darker-brown 

 cloudings. Small pale-brown dots, besides the above, cover the back of the head and body 

 and about one-half of the pectorals, dorsals and caudal. Ventrals, anal, and lower lobe of 

 dorsal of a more uniform brown. 



The first specimen to be described, figured and labelled Heterodontus japonicus is 

 that of Maclay and Macleay (1884). This specimen is a 406'mm. (16-inch) female obtained 

 from Japan; it is evidently not full-grown. The authors state that the "coloration and 

 markings'" of their specimen are not by any means distinct, the fish having been long in 

 spirits; but the remains of numerous dark-brown bands across the back present a very 

 different style of marking from those of the other known species of the genus. Maclay 

 and Macleay 's drawing of the entire fish in lateral view (my Text-figure 23) shows the 

 transverse dark bands with essentially the same distribution as in Miiller and Henle's 

 figure, save that the band immediately in front of the first gill-slit is lacking. In their 

 drawing of the same specimen in dorsal view (my Text-figure 24) the transverse bands 

 are more prominent. 



Maclay and Macleay's further description of their 406-mm. (16-inch) female specimen 

 of Heterodontus japonicus is here given very nearly in the words of the authors, but with 

 some rearrangement and clarification. They state that the snout is very bluntly rounded 

 (my Text-figures 23 and 24). The mouth (Text-figure 25) differs from that of H. phillipi 

 in having the inner nasal fold less long, the fold of the upper lip rounder and shorter, and 

 the inferior margin of the fold of the lower lip covered with soft skin having only a very 

 few scutellae (placoid scales). The spiracle (Text-figures 23 and 24) is distinct, and larger 

 than in H. phillipi. It is placed a little below and behind the eye. The lateral line is 

 straight and continuous from the supraorbital ridges. The first dorsal fin is high and 



Text-figure 25. 

 Anterior part of the head of Heterodontus japonicus 

 seen from the ventral side, showing the mouth open- 

 ing, nares and oro-nasal grooves, the labial folds and 

 some exposed anterior teeth. From the young female 

 specimen about 406 mm. (16 inches) long, shown in 

 Text-figure 23 and 24. 



After Maclay and Macleay, 18S4, Fig. 3, pi. 20. 



