1873.] 681 (Cope. 
GaSTRODERMUs Cope. Coracoids not enclosing the ventral region, 
which is covered with soft.skin ; dorsal soft rays 6-7. 
- ambiacus Cope, Proceed. Acad. Phila. 1872, 280. 
G. trilineatus Cope, 1. ¢. 281, Pl. VI, fig. 2. 
. acutus Cope, 1. c. 281. 
- amphibelus Cope, 1. c. 282. 
- armatus Ginth. Proceed. Zool. Soc. Lond., 1868, 230, cut. 
. agassizit Steind. loc cit. sup. 90, Pl. XII, f. 2. 
. elegans Steind. 1. c. 93. 
G. nattereri Steind. 1. c. 95, Pl. XI, f. 1. 
28. GASTRODERMUS ARMATUs Gthr. 
Coll. 1878. 
29. GASTRODERMUS AMBIACUS Cope. 
Coll. 1873. Nauta. 
30. CALLICHTHYS ASPER Quoy. Gainn. 
Coll. 1873. Nauta. 
31. HopLosTeRNUM LONGIFILIS Cuv. Val. 
Coll. 1873. Nauta. \ 
32. LorIcaRIA CATAPHRACTA L. 
Coll. 1878. The Marafion. 
33. LORICARIA ROSTRATA Spix. 
Coll. 1873. 
34. LiposaRcus JEANESIANUS Cope, Proceed. Acad. Phila., 1874, p. 135. 
Coll. 1873. Nauta. 
35. Liposarcus scropaus Cope, l. c. p. 186. 
Coll. 1873. Nauta. 
386. PLECOSTOMUS VIRESCENS Cope, l. c. 187. 
Coll. 1878. 
87. ARGES SABALO Cuv. Val. 
Rio Urubamba ; altitude 10,000 feet. 
38. TRICHOMYCTERUS DISsPAR Tsch. Cope, Proceed. Amer. Philos. Soc., 
1877, p, 30. 
Sources of the Ucayale at Urubamba, 10,000 feet, and Tinta, 11,400 feet. 
Q 
RAAARAA2’ 
39. TRICHOMYCTERUS GRACILIS (?) Cuv. Val., Cope, loc. cit. p. 30. 
Tinta, 11,400 feet. 
ASPREDINIDA. 
40. BUNOCEPHALUS MELAS Cope, loc. cit. 1872, p. 132. 
Coll. 1873. Nauta. 
41. DysicHTHYs CORACOIDEUS Cope, |. c. p. 133. 
Coll. 1878. Nauta. 
PROC. AMER. PHILOS. Soc. xviI. 101. 4G. PRINTED JUNE 1878. 
