106 Fretp Museum-or NaAturAL History—Zo6é.ocy, Vor. X. 
The following table gives the counts of anal rays of a number of 
specimens: 
Number of anal rays 25} .26-). 27-1).281.29- 1230144 
Astyanax eneus micropthalmus (Ginther) 
El Rancho, Guatemala (Atlantic) . . . fet OR, eos Ma: a 
San José del Idolo, Guatemala (Pacific). . I FO ties Ji cae, dene: 
Lake Amatitlan, Guatemala (Pacific) . . re hae es Ges Bee gee 
Astyanax eneus erstedi (Kroyer) . ies 
Lake Managua, Nicaragua (Atlantic) . . Sebo Fok SB ioe hos 
Astyanax albeolus Eigenmann . a este } 
Jesus Maria, Costa Rica (Pacific) . . . 2.0: 6.1 1OC oe I 
Orotina, April 20, Costa Rica (Pacific) .. 4/ 9] 10] 4 
Turribales, Costa Rica (Pacific) . . .- . 3:44 lat Wei eae 
Astyanax eneus costaricensis Meek : 
Guapilis, Costa Rica (Atlantic) . . . . 3 I 2 
Parismina, Costa Rica (Atlantic) ay els Oe SO 
Pent, ADULTS 0 edt eS oe.) oe ke ee Me Ge Mog a Ct 
* The figures in the columns give the number of specimens counted. 
La Junta (39), 45 to 80 mm.; Guapilis (5), 75 to 125 mm.; Parismina 
(22), 80 to 125 mm.; Costa Rica River (2), 65 to 112 mm.; Cuba River 
(5), 82 to 105 mm.; Zent, April 12 (48), 55 to roo mm.; Zent, April 15 
(62), 56 to 120 mm.; La Victoria (22), 70 to 120 mm.; Chitaria (2), 
85 to 95 mm. (Alfaro). 
Astyanax albeolus Eigenmann. 
Astyanax erstedit Meek (not Kroyer), Pub. Field Mus., Zodl. Ser., 
VII, 1907, 145, part (Rio Siguiares* & Rio Machuca, Costa Rica). 
Astyanax albeolus Eigenmann, Bull. Mus. Comp. Zodl., 1908, 97 
(Rio Machuca and Rio Siquiares,* Costa Rica). 
Astyanax eneus Meek, Pub. Field Mus., Zodl. Ser., vil, 1907, 145 
(Rio Siguiares* and Pacific Side, Costa Rica). 
Tetragonopterus eneus Regan (not Giinther), Ann. & Mag. Nat. 
Hist., 1908, 456, part (Rio Grande de Térraba, Costa Rica). 
Turrubales (52), 45 to 115 mm.; Jesus Maria (48), 75 to 110 mm.; 
Orotina, April 20 (70), 50 to 145 mm.; Orotina, April 22 (160), 35 to 
120 mm.; Rio Machuca (2), 115 and 118 mm. (Alfaro); Siquiares (1), 
86 mm. (Alfaro); Pacific Side (1), 83 mm. (Alfaro); Sumbres (10), 
* Misspelled Siguires, 
a 
