Fishes of the Western North Atlantic 145 



Again, I counted 77 oblique series (running upward and backward) just above the 

 lateral line on the right side and 83 on the left. No variation in the number of longi- 

 tudinal rows between the lateral line and origin of dorsal, and between the lateral line 

 and origin of anal, occurs in the specimen studied, as these are respectively 8 and 6 

 full rows on each side. As to the number of scales in advance of the dorsal, the speci- 

 men before me has 2 1 modified scales in the median series, and 3 1 oblique series 

 of ordinary scales (running upward and backward) on each side of the median row. 



As neither Fowler (24: 652) nor Beebe stated which of the two was counted, I 

 made inquiry of Mr. Fowler, who re-examined the type and found 2 i modified scales 

 in the median series, and 30-32 ordinary scales in the oblique series. As to the size of 

 the eye in proportion to the length of the head, the specimen at hand is intermediate, 

 the eye being contained in the head 5.4 times. The pelvic fin also is intermediate, its 

 length 2.35 times in head. I have no doubt that the gill rakers in Dixonina become 

 shorter and obscure with age, as they do in Albula, and that in large specimens it is 

 difficult without dissection to see all of the bases, for that is all that remains of some of 

 them. In the specimen from Acapulco, I find 5+ 10, including one in the angle with 

 the lower limb count, a figure intermediate between counts given by Beebe and by 

 Fowler. 



It may be concluded, on the basis of the evidence presented, that D. pacifica for 

 the present at least is a synonym of Z). nemoptera. 



Range. This albulid, as here understood, is known from the Atlantic from the 

 type taken at Santo Domingo and from a specimen collected at Puerto Cabello, Vene- 

 zuela." For the Pacific it is known from a specimen taken at Acapulco, Mexico 

 (reported by Myers), and from 19 specimens taken of? the coast of Costa Rica 

 (reported as D. pacifica by Beebe). According to Walford {jl\ 11 9), the fish from the 

 Gulf of California figured as Albula vulpes by Kumada and Hiyama (47: pi. 5) also 

 is this species. 



Synonyms and References: 



Dixonina nemoptera Fowler, Proc. Acad. nat. Sci. Philad. (1910), 191 1: 652, fig. (orig. descr.; type local. 



Santo Domingo, West Indies; ANSP 1597); Myers, Copeia, 1936: 83 (Acapulco, Mexico; relation, to 



Albula); Walford, Copeia, 1939: 119 (specimen from Gulf of California, figured as Albula vulpes in 



4.J, is Dixonina). 

 Albula nemoptera Metzelaar, Trop. Atlant. Vissch., 1919: 9 (descr.; Puerto Cabello, Venezuela). 

 Albula vulpes (not of Linnaeus) Kumada and Hiyama, Mar. Fish. Pacif Cst. Mexico, 1937: 27, pi. 5 in color 



(descr., in part at least, and plate based on Dixonina). 

 Dixonina pacifica Beebe, Zoologica, 2-] (8), 1942: 43, figs. 1-5 (orig. descr.; type local. Puerto Culebra, Costa 



Rica; SU 46486; cf D. nemoptera). 



19. One seen from Brazil. — G. S. Myers. 



