ANNOTATED LIST OF THE SPECIES 333 
Type: Amplova balboae Jordan and Seale 
Pacific coast of Panama to coastal streams of the Guianas and Brazil: Amazons 
“Venter keeled, compressed, without scutes; gill-membranes not united: lower 
ramus of first gill-arch with fewer than 30 rakers; fewer than 46 vertebrae; mouth 
small, snout short; maxillary short, curved, broad and rounded at the end.” 
(Myers). 
A letter from Dr. 8. F. Hildebrand, now engaged in revising the anchovies of 
the Americas, informs me concerning the boundaries of the genus Anchoviella: 
“maxillary of moderate length, but reaching well beyond the eye and nearly 
to the joint of the mandible; no enlarged teeth in the jaws; the gill-membranes 
separate; gill-rakers in small or moderate number and not increasing with age.”’ 
The following species was described under Amplova, but it appears that Hilde- 
brand may show in his forthcoming monograph that the Amplova of Jordan and 
Seale is not distinct from Anchoviella Fowler. He says that the principal character 
on which Amplova was created is the short mandible, supposed not to reach the 
posterior margin of the eye, an observation which he has been unable to verify. 
The geographical boundaries of the genus or genera will be better known after 
his paper appears (an event which may precede the publication of these lines). 
464. AMPLOVA ALLENI Myers 
Plate XXII, fig. 3 
Amplova alleni Myers, 1940, Proc. Cal. Acad. Sci., (4), XXIII, 438. 
Peruvian Amazonia, in and about the piedmont 
— —, 1, 84 mm., Gosulimacocha, R. Morona, Allen, October, 1920. 
——_——, 12, 68-88 mm., Contamana, Allen, August, 1920. 
———, 6, 84-87 mm., Lago Cashiboya, Allen, August, 1920. 
6421 Mus. Cal. Acad. Sci., 1, type, 68 mm. standard length, Lago Cashiboya, Allen, August, 1920. 
——, 1, 76 mm., Rio Morona, Allen, October, 1920. 
Family XV: Clupeidae 
Genus 190: PRISTIGASTER Cuvier 
Pristigaster Cuvier, 1817, Régne Anim., II, 176; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 452. 
Type: Pristigaster cayanus Cuvier 
Range marine and fresh waters, both coasts; Amazons 
Without ventral fin; body much compressed and deep, belly protracted; 
strongly toothed, jaws similar to herring. 
465. PRISTIGASTER CAYANUS Cuvier 
Pristigaster cayanus Cuvier, 1817, Reégne Anim., II, 176 (nom. nud.); 
Cuvier, 1829, Réene Anim., 321; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, IIT, 452. 
