ANNOTATED LIST OF THE SPECIES 173 
146. DrcarOGON ADSPERSUM (Steindachner) 
Callichthys adspersus Steindachner, 1876, Sitzb. KK. Akad. Wiss. Wien, LX XIV, 87, pl. xi, figs. 
2 and 2b, Tabatinga to Porto do Moz. 
Decapogon adspersus Kigenmann and Eigenmann, 1888, Proc. Cal. Acad. Sci., (2), I, 165. 
Decapogon adspersum EKigenmann and Eigenmann, 1890, Oce. Papers Cal. Acad. Sci., I, 461. 
Dianema longibarbis Gosline, 1940, Stanford Ichth. Bull., IT, 1, 9. 
Rio Huallaga to Santarem and Porto do Moz 
15709, , Iquitos, Allen, 1920. 
15706, 4, 93-110 mm., Yurimaguas, Allen, November, 1920. 
16129, 1, 120 mm., brook near Rio Itaya, Iquitos, Allen, September, 1920. 
Genus 68: CORYDORAS Lacépéde 
Corydoras Lacépéde, 1803, Hist. Nat. Poiss., V, 145, geoffroyz = punctatus; 
Eigenmann and Eigenmann, 1890, Oce. Papers Cal. Acad. Sci., I, 465; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 402; 
Eigenmann, 1912, Mem. Carnegie Mus., V, 219; 
Myers (Gosline), 1940, Stanford Ichth. Bull., II, 1, 10, 11. 
Hoplisoma Swainson, 1839, Fish. Amph. Rept., II, 304, punctata. 
Hoplosoma Gill, 1858, Ann. Lyc. Nat. Hist. N. Y., VI, 402, punctata. 
Gasterodermus Cope, 1878, Proc. Amer. Phil. Soc., X VIT, 681. 
Type: Corydoras geoffroyi Lacépéde 
The Guianas to the Argentine 
Resembling Brochis in the narrow occipital process which extends to the 
dorsal plate, but having only 6-8 rays in the dorsal compared with 10-11 found in 
that genus. 
Suture between coracoid and humeral processes extending from the large 
pectoral pore obliquely downward and backward to the ventral margin of the 
pectoral armature; dorsal and pectoral spines long, pungent, their outer surfaces 
smooth. 
147. CorypoRAS AENEUS (Gill) 
Hoplosoma aeneum Gill, 1858, Ann. Lye. Nat. Hist. N. Y., VI, 48, Trinidad. 
Callichthys aeneus Giinther, 1864, Cat. Fish. Brit. Mus., V, 230. 
Corydoras aeneus Jordan, 1886, Proc. U.S. Nat. Mus., [X, 560; 
Eigenmann and Higenmann, 1890, Occ. Papers Cal. Acad. Sci., I, 471; 
figenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 403; 
Regan, 1912, Ann. Mag. Nat. Hist., (8), X, 218; 
Ellis, 1913, Mem. Carnegie Mus., VIII, 404; 
Marherr, 1937, Bl. Aquar.-Terrar. Stuttgart, XLVIII, 240; 
Gosline, 1940, Stanford Ichth. Bull., II, 1, 19. 
Trinidad to Rio Pichis, Peru, Matto Grosso and Bolivia 
16165, 18, 38-57 mm., Puerto Bermudez, R. Pichis, Allen, July, 1920. 
Apparently identical with Gill’s specimens from Trinidad, and although un- 
reported from intermediate points, have been reported from Bolivia and Matto 
Grosso. Mrs. Ellis, however, found that her three specimens of aeneus from Trini- 
