684 Bashford Dean Memorial Volume 



lencrth distant from the caudal. The scales on the dorsal surface of the body are not 

 particularly large. A few dark spots are visible: these are small, widely scattered, and 

 most of them were found only after a careful scrutiny. 



Taws .\icd Teeth. — In his "Atlas" (1913) Garman figures teeth and jaws of very 

 young, medium-sised and adult specimens of H. fraiicisci. In his figure showing the 

 jaws in lateral view, they bear a close resemblance to those of H. quoyi (my Test-figure 17j. 

 In Daniel's figure of the skull of H. jraTicisci (1915, Fig. 6, pi. IIIj the form of the jaws as 

 seen in lateral view is somewhat intermediate between the two quite different forms 

 portrayed by Goodrich (my Text'figure 33) and Garman (1913: Fig. 4, pi. 47) for H. 

 phiUipi. One infers that these differences are individual and not specific. 



Maclay and J^Iaclea^- ( l879j state that the front teeth of H. jraiicisci are strongly 

 tricuspid, those at the sides are longitudinally ridged. Garman (1913) writes that the 

 anterior teeth have five cusps, the middle one the longest: with age the outer cusps 

 become less apparent and the middle cusps much stronger. His drawings show the 

 posterior teeth longitudinally ridged in all stages. In my two large remale specimens 

 the anterior teeth are tricuspid. 



OOXIPARISON OF HETHlODO.\nJS ^VOXI A?qp FBJOiCISCI 



In my descriptions of the specimens of H. quoyi and H. fra7icisci belonging to the 

 American Museum of Natural History, some statements were made concerning the form 

 of the body. It seems desirable to bring together the data upon which these statements 

 were based, in order that certain features in the two species may be accurately compared. 

 Incidentally, a few comparisons will be made with other species. 



The measurements upon which the present discussion is based are given in Table I. 

 In this connection one should bear in mind that the female specimen of H. quoyi is presum- 



T.-VBLE I 

 SOME XlEASUREXffiNTS IS" MUlDvIETERS OF KXJR SPECIMENS OF HETERODOXTL'S 



Speoei H. quoyi H. francisci 



Ses csf SpscEoai Fanale i Male i Female I Female 



Tcftsl lengili (fiiEn tip rf sDoiit to lip csf lail fin) 527 372 705 j 565 



Greatest width df bead (at first gil-covers) I 118 ;| 60 , 13S ,1 97 



Greatest Leig^it of liead lat postsiar end supiaorhital dd^) , 64 41 86 ; 67 



Gr^tEst height of body (in tiansv^ise p^ari? p:>«mg throng fiftli giH-covers) 80 | 4S ■ 110 ' 75 



Lei^gtbi of first gifi-slit ■ 30 ! 15 | 34 ! 28 



LeEgtiiaffiiti[giS-sKt 14 s 17 14 



Lon^tDdiiHl distaiiiabetweaj bases of iKctaralaEdfcadcKsa! fins. 25 12 



Length of base of anal fin 2S IS ' 42 ! 32 



Distance bers-een base of anal fin and ventral lobe csf caudal 34 23 43 



JO 



ably advdt or nearly adult, while the male of the same species is decidedly young. The 

 larger specimen of ff. fraricisci is known to be adult. 



I may say at once that the two species are readily separable. In certain features of 



