676 Bashford Dean Meinorial Volume 



anterior views but these are lacking in the Japanese dravi-ing reproduced as my Text-figure 

 15. Klaclay and Macleay state that the dorsal fins are ver>'- falcate. This feature is per- 

 haps exaggerated in their drawing, which wzs made from a preser\'^ed specimen; it is 

 more moderate and more Hfe-Hke in the Japanese drawing. In the latter figure the 

 anterior margin of the pectoral fin is opposite the fourth gill-sHt, while in Maclay and 

 Macleay's figure it is opposite the second. 



Tke Teeth. — ^According to Maclay and Xlacleay (1886), the anterior teeth of 

 their young female specimen of H. zebra (518 mm. long) were five-cusped. Garman (1913) 

 states that the anterior teeth are quincuspid in the young, tricuspid in the adult. 



HETERODO?mJS §UOri FREMTNTVILLE 



Examples of this species (Text-figure 16) have been taken off the western coast of 

 South America, specifically at the Galapagos and Lobos de Afiiera Islands — the latter 



Text-figure 16. 



Heterodontus quoyi Freminville: a male specimen about 475 mm. (18.7 inches) long, taken at the Galapagos 



Islands. The original figure, in color, is labelled Ccstracion paniherinus. 



After Valendennes, 1S46, Atks (Poissons), Fig. 2, pL 10. 



close to the coast of Peru. In addition, a Heterodontid shark taken at the Lobos de 

 Tierra Island, Peru, belongs to this species. This specimen ■^'as described and figured by 

 Evermann and Radcliffe (19l7j who named it Gyropleurodus peruanus. Of this fish they 

 UT~ite: "The species appears to be most closely related to the poorly described G. quoyi, 

 but differs in coloration, in insertion of anal, and relative si?e of pectoral' ". ^After a careful 

 study of the matter, Beebe and Tee- Van (1941) conclude that all the Heterodontid sharks 

 thus far taken off the western coast of South ^America belong to the species peruanus 

 (quoyi) as redescribed by Valenciennes and later authors. They state that the alleged 

 differences between quoyi and peruanus do not exist, although there is some individual 

 \'ariation in the color patterns. With this conclusion the present writer is thoroughly in 

 accord. The native name of H. quoyi is "Gato" (Nichols and Murphy, 1922). 



