LIST OF CENTRAL AMERICAN AND MEXICAN 

 NEMATOGNATHI. 



Amiurus Rafinesque. 



AmiuruS dugesi Beau — Rio Turbio; Guanijuato, Mexico, west of the 

 Sierra Madre. Proc. U. S. Nat. Mus. 1879, 304. 



IcTALURUS Rafinesque. 



Ictalurus meridionalis (Guatlier)-Kio Usumacinta, Guatemala. Cat. 

 Fish. Brit. Mus. v, 102, 1864. 



Rhamdella E. & E. 



Rhamdella parryi E. & E. — Rio Zanaleueo near Tonala, Chiapas, Mex- 

 ico. Proc. Cal. Acad. Sci. 2d Ser. i, 130. 



Rhamdella petenensis (Giiuther)— Lake Peteu; Chiapas, Mexico. 1. c. 

 126. - 



Rhamdella brachyptera (Cope) -Mexico. Trans. Am. Philos. Soc. xiii, 

 404. 



Rhamdella baronis miilleri (Troschel )— Pacific coast of Mexico. Mai- 

 ler, Wierbelth. Mex. 102, 1865. i 



Rhamdella guatemalensis (Guuther)— Huamuchal; Guiitemala; Nicara. 

 gua. 1. c. ]'22. 



Rhamdella salvini (Giiuther) — Rio Sau Gerouimo, Guatemala. I.e. 130. 



Rhamdella polycaulus (Giiuther)— Rio Sau Gerouimo. 1. c. 131. 



Rhamdella managuensis (Giiuther)— Lake Managua. Fish. Central 

 America, 393 and 476, 1866. 



Rhamdella hypselurus (Giiuther)— Mexico. Cat. Fish. Brit. Mus. v, 126. 



Rhamdella motaguensis (Guuther)— EioMotagua. 1. c. 127. 



Rhamdella laticauda (Heckel)— Mexico. Guuther, 1. c. 127. 



Rhamdella nicaraguensis (Giinther)— Lake Nicaragua. 1. c. 125. 



Rhamdella micropterus (Giiuther)— Rio San Gerouimo. 1. c. 124. 



Rhamdella godmanui (Giinlher) — Lower Vera Paz; Rio Motagua; Mex- 

 ico. 1 c 124. 



* The difference between Rkamdia and Rhamdella lies in the fontanels. In Rhamdia 

 there is a frontal fontanel only, in Rhamdella both frontal and occipital fontanels are 

 present. Only the above two species of those inhabitint; this region have been examined 

 In this respect. It is doubtful therefore whether the following ones should be placed in 

 one genus or the other. 



t We have not seen this paper and know nothing of this fish. 



