ANNOTATED LIST OF THE SPECIES 395 
cal rows of pencilled lines alternate with hyaline zones on the fins, especially pro- 
nounced on the caudal, and growing more distinct with age; markings on the body 
coalescing somewhat, and more faded, with age. 
Resembling 2. mariae; body contours more elongate; greater number of 
spiny rays in the dorsal fin; two or three more gill-rakers; markings in a double 
series, without special emphasis upon one or two spots, as in A. dorsigera or 
tetramerus. 
The allusion of the name of this species is to the river-‘‘launch”’ Hércules, of 
the fleet of Casa Israel, Iquitos, my headquarters during a month’s cruise of the 
upper Maranon, Morona, Pastaza, and Tigre rivers, where it was making its semi- 
annual calls upon the military posts. I was guest of the Peruvian government 
during this period. 
Genus 205: CICHLAURUS Swainson 
Cichlaurus Swainson, 1839, Fish. Amph. Rept., II, 173; 
Jordan, Evermann and Clark, 1928 (1930), Rept. U.S. Comm. Fish., Part IT, 416. 
Cichlasoma Swainson, 1839, Fish. Amph. Rept., IT, 230; 
Regan, 1905, Ann. Mag. Nat. Hist., (7), NVI, 60-77, 225, 243, 316-340; 
Kigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 473; 
Jigenmann, 1912, Mem. Carnegie Mus., V, 494; 
Eigenmann, 1922, Mem. Carnegie Mus., EX, 201; 
Hubbs, 1936, Carnegie Inst. Publ. no. 457, 254. 
Acara (in part) Heckel, 1840, Ann. Wiener Mus., I, 338. 
Heros Heckel, 1840, Ann. Wiener Mus., IT, 338. 
Theraps Giinther, 1862, Cat. Fish. Brit. Mus., IV, 284, trregularis. 
Archocentrus Gill, 1877, Proce. Acad. Nat. Sci. Phila., 186, centrarchus; 
Jordan, Evermann and Clark, 1928 (1930), Rept. U. 8. Comm. Fish., Part IT, 420. 
Astatheros Pellegrin, 1903 (1904), Mém. Soc. Zool. France, XVI, 203; 
Jordan, Evermann and Clark, 1928 (1930), Rept. U.S. Comm. Fish., Part II, 420. 
Astronotus (Heros) Eigenmann and Eigenmann, 1891, Proc. U.S. Nat. Mus., XTV, 68. 
(The Cichlasoma of authors generally, replaced by Jordan, Evermann, and Clark by reason of the 
appearance of Cichlaurus on an earlier page of Swainson’s Part IT.) 
Type: Labrus punctatus Bloch 
Mexico to Rio de la Plata 
Anal with more than three spines; lateral line depressed; gill-rakers short; 
mouth small, premaxillary moderately protractile. 
Predominating in Central America, diminishing southward through South 
America. 
508. CIcCHLAURUS BIMACULATUS (Linnaeus) 
Acara Piso, 1658, Hist. Nat. Med., 67. 
Labrus no. 87 Gronow, 1754, Mus. Ichth., 36. 
Sparus no. 227 Gronow, 1763, Zoophyl., 64, pl. v, fig. 4. 
Sciaena bimaculata Linnaeus, 1754, Mus. Adolphi Fred., I, 66. 
Labrus punctatus Linnaeus (in part), 1758, Syst. Nat., ed. x, 285. 
