THE SHORE FISHES OF PERU 429 



AUSTROMENIDIA REGIA I, Humboldt and Valenciennes) 



Pejerret 

 Figure 83 



Atherina regia Humboldt and Valenciennes, 1833, p. 187, Callao, Peru (original 



description). 

 Atherina laticlavia Cope (probably not of Cuvier and Valenciennes), 1877, p. 28, 



Callao Bay, Peru. 

 Basilichthys regillus Abbott, 1899, p. 339, Callao, Peru (original description). — 



Starks, 1906, p. 783, Callao, Peru. 

 Basilichthys odavius Abbott, 1899, p. 340, Callao, Peru (original description, 



thought to be more slender, with greater space between dorsals, and with 



more numerous spines in first dorsal than in B. regillus). 

 Basilichthys jordani Abbott, 1899, p. 341, Callao, Peru (original description, 



thought to diflFer from B. regillus and B. octavius in having a more strongly 



developed lower jaw and in the presence of teeth on vomer). 

 Chirostoma affine Steindachner (possibly not of Steindachner, 1898, p. 313, 



Iquique, Chile), 1902, p. 128, Callao, Peru (description). 

 Basilichthys affinis Evermann and Radcliffe, 1917, p. 47, pi. 4, fig. 3, Callao and 



Pisco, Peru (synonymy; description; reasons for synonymizing B. regillus and 



B. jordani, both of Abbott are stated). — Nichols and Murphy, 1922, p. 506, 



Lobos de Tierra Island, Independencia Bay, North Chincha Island, and 



Callao, Peru. 

 Austromenidia regia Jordan and Hubbs, 1919, p. 66 (synonymy; range). — 



Fowler, 1940b, p. 763, Callao, Peru, 



Figure 83. — Austromenidia regia (Humboldt and Valenciennes). From a specimen 270 

 mm. long, Callao, Peru (U.S.N.M. No. 77644). (After Basilichthys affinis Evermann 

 and Radcliffe, 1917.) 



Head 4.1 to 4.7; depth about 5.4 to 6.4; D. IV to VIII-I, 8 to 11 ; 

 A. I, 14 to 16; P. 14 to 16 (usually 15); scales 70 to 93, 11 complete 

 through series between basis of second dorsal and anal; vertebrae 49 

 to 51 (seven specimens dissected). 



Body very elongate, compressed ; caudal peduncle fairly slender, its 

 depth 3.3 to 3.8 in head; head rather low, somewhat compressed, its 

 upper profile nearly straight; snout rather long, pointed, 3.2 to 3.7 

 in head; eye round, 3.4 to 5.5; interorbital shghtly convex, 3.4 to 3.8; 

 mouth terminal; premaxillaries curved, protractile, being capable of 

 considerable extension; maxillary somewhat expanded, round pos- 

 teriorly, extending downward to near mandibular joint; teeth in the 

 jaws mostly in 2 series, pointed, those on vomer and palatines present 

 or absent, variable, their development not entirely related to age, 



