The Embryology of Heterodontus japonicus 



665 



Text-figure 5. 

 A Port Jackson Shark, Heterodontus phillipi Blainville. This female specimen, 610 mm. (24 inches) long, 

 was captured at Port Jackson (Sydney Harbor), Australia. 

 After Phillip, 1789, pi. facing p. 283. 



voyage is reproduced here (in Text-figure 5). For nearly a century this drawing remained 

 the best portrait of Heterodontus pMlipi. Under the heading "Port Jackson Shark", 

 Phillip described the ''new species" (in one sentence!) as follows: 



The length of the specimen from which the drawing was taken is two feet; and it is 

 about five inches and an half over at the broadest part, from thence tapering to the tail: the 

 skin is rough, and the colour, in general, brown, palest on the under parts: over the eyes on 

 each side is a prominence, or long ridge, of about three inches, under the middle of which the 

 eyes are placed: the teeth are very numerous, there being at least ten or eleven rows; the 

 forward teeth are small and sharp, but as they are placed more backward, they become more 

 blunt and larger, and several rows are quite flat at top, forming a kind of bony palate, some- 

 what like that of the Wolf-fish; differing, however, in shape, being more inclined to square 

 than round, which they are in that fish : the under jaw is furnished much in the same manner as 

 the upper: the breathing holes are five in number, as is usual in the genus: on the back are two 

 fins, and before each stands a strong spine, much as in the Prickly Hound, or Dog Fish : it has 

 also two pectoral, and two ventral [pelvic] fins: but besides these, there is likewise an anal 

 fin, placed at a middle distance between the last and the tail : the tail itself, is as it were divided, 

 the upper part much longer than the under. 



One may add that, in the words of Garman (1913), the spiracle is small, below the 

 orbit and immediately behind a vertical from its posterior edge. The distribution of 

 the lateral-line system of Heterodontus phillipi was earlier (1888) figured and described by 

 Garman. For characters diagnostic of the species, see Garman's key. The photograph 

 by Saville-Kent (my Text-figure 4) probably gives a better conception of the general 

 appearance of this shark than any drawings reproduced herein. 



Lesson's colored figure (1826) of a male Heterodojitus (Cestracion) phillipi has been 



