REVIEW OF THE PARROTFISHES 129 



The striped color phase of the young consists of a pale streak above 

 lateral line in the brownish dorsal half of body, whereas lower half of 

 body is abruptly paler below a nearly white midlateral streak; other 

 variations consist of plain pale or mottled brown coloration. In 

 adults, the snout is more than half length of head and becomes more 

 rounded and the interorbital space is convex. 



I am unable to verify the differences that Longley and Hildebrand 

 (1941, pp. 206-207) recognize as separating Callyodon auropunctatus 

 from C. ustus, nor can I find new ones that will serve to distinguish 

 these two forms. 



I have examined a large number of lots of this species, some contain- 

 ing numerous specimens, from the following localities: Sommers Point, 

 New Jersey, 1; North Carolina, 2; Long Bay, South Carolina, 1; 

 Florida, 7; Florida Keys, 15; Tortugas Island, Florida, 7; Cuba 2; 

 Bermuda, 1 ; Yucatdn, 1 ; Gulf of Campeche, 1 ; Gulf of Venezuela, 

 1; Panama, 3; Rio de Janeiro, Brazil, 1. 



Nicholsina denticulatus (Evermann and Radcliffe) 



Plates 5,d; 26b, c 



Xenoscarus denticulatus Evermann and Radcliflfe, U. S. Nat. Mus. Bull. 95, 

 p. 129, pi. 12, fig. 1, 1917 (type locality: Lobos de Afuera, Peru; holotype 

 USNM 77619). 



Xenoscarus hubbsi Harry, Amer. Midi. Nat., vol. 43, p. 147, figs. 2, 3, 1950 (type 

 locality; Guaymas, Sonora, Gulf of California, Mexico). 



I have compared 28 specimens from the Gulf of California, kindly 

 loaned by Dr. Boyd Walker, University of California at Los Angeles, 

 with 40 specimens from Peru, including the holotype of Xenoscarus 

 denticulatus. Harry described juvenile specimens of Nicholsina 

 denticulatus as Xenoscarus hubbsi, but when specimens of the same 

 sizes are compared, all his measurement differences disappear; the 

 number of midlateral series of scales is 21 in all localities with little 

 variability; the anteriormost predorsal scale extends into the inter- 

 orbital space in specimens from both localities; the number of oblique 

 rows of incisorlike teeth increases from 2 to 7 with increase in size; 

 the last midlateral line scale is very variable in size, larger or smaller 

 than the penultimate scale; the color pattern varies with age; and 

 I am unable to find any character or group of characters that distin- 

 guishes X. hubbsi as even a subspecies. 



Genus Euscarus Jordan and Evermann 



Euscarus Jordan and Evermann, Check-list of the fishes and fish-like vertebrates 

 of North and Middle America, Rep. U. S. Fish. Comm., 1895, app. 5, p. 416, 

 Dec. 28, 1896 (genotype; Labrus creiensis Linnaeus). 



