PHYSOSTOMI. 
Pisces 33 
Ariodes ccneus, sp. u., Sauvage, Bull. Soc. Philom. (7) vii. p. 160, ‘He 
Raffles.’ 
Petrocephalus balayi, sp. u., id. 1. c. p. 159, Congo. 
Centromochlus perugim, sp. n., Steiudachner, Denk. Ak. Wien, xlvi. 
p. 26, pi. vii. fig. 2, Canelos. 
Cetopsis plumbeus, sp. n., id. 1. c. p. 31, pi. vii. fig. 3, Canelos. 
Doras armatulus, C. & V., redescribed ; id. 1. c. p. 5. 
Oxydoras stuebeli, sp. n., id. ibid. pi. iii. fig. 1, Rio Huallaga. 
Arges sabalo , C. & V., p. 17, pi. iv. fig. 2, and A. prenadilla, Val., p. 20, 
pi. v. fig. 5, redescribed ; id. 1. c. 
Arges longifilis , sp. n., id. 1. c. p. 19, pi. v. fig. 3, Rio Huambo. 
Epapterus dispilurus , Cope. Note ; id. 1. c. p. 31. 
Chcetostomus cirrhosus , Val.,p. 7, leucostictus , Gthr. p, p. 7, microps , Gthr., 
p. 23, and branickii , Steind., p. 23. Notes on these species; id. 1. c. p. 7. 
Chcetostomus taczanowskii , sp. n., id. 1. c. p. 23, pi. v. fig. 2, Rio de 
Tortara. 
Loricaria stuebeli , sp. n., id. 1. c. p. 6, pi. iii. fig. 26, Rio Huallaga. 
Acestra Icneri, sp. n., id. 1. c. p. 26, pi. vii. fig. 1, Canelos. 
j Erethistes, M. & Tr. (== Hara , Blyth). The amended characters are 
given ; Gunther, Ann. N. H. (5) xi. p. 139. 
Dunocephalus bicolor , p. 8, fig. 1, and 1cncri ) p. 9, fig. 2, spp. nn., 
Steiudachner, l. c. pi. ii., Rio Huallaga. 
Trichomycler us taczanowsldi, p. 22, fig. 1, Rio Huambo, and T. amazoni- 
cus, p. 29, fig. 4, Cudajas, spp. nn., id. 1. c. pi. vi. 
Stegophilus reinhardti, fig. 1, and macrops, fig. 2, spp. nn., id. 1. c. 
p. 18, pi. vi., Lake Manacapuru, above Mauaos, Upper Amazon. 
Scope lidjs. 
Scopelus. Notes on and figures of larval forms referred to this genus 
from Messina ; Emery, MT. z. Stat. Neap. iv. pp. 409-411, figs. 7-14. 
Scopelus doderleini , p. 193, pi. x. figs. 1-4, and acanthurus, p. 166, 
spp. nn., Facciola, Nat. Sicil., Anno 1 [1882], Messina. Both = S. man - 
derensis , Lowe ; Doderlein, l. c. pp. 258-263. 
Scopelus acanthurus, i. [1882] p. 166, and S . uracollampus, iii. p. 151, 
spp. nn., Facciola, l. c., Messina. 
Saurida ferox , sp. n., Ramsay, P. Linn. Soc. N. S. W. viii. p. 177, Port 
Jackson. 
Paralepis coregonoides. On its occurrence in Cornwall ; Day, Zool. 
1883, pp. 381, 382, & 350. 
A lepi [di\ chthys argyrogaster , sp. n., FaccioH, Nat. Sicil. i. [1882] 
p. 167, Messina. 
A lepidosaurus cesculapius , sp. n., Bean, P. U. S. Nat. Mus. v. p. 661, 
Alaska. 
Pelopsia, g. n. Type of a new family having affinity with the Sterno- 
ptychidce and Scopelidce, for P. Candida and P. scillce, spp. nn. ; FaccioH, 
Nat. Sicil. ii. p. 145, Messina. Is the young of Chlorophthalmus agassizi , 
Bp. ; id. op. cit. iii. p. 71. 
1883. [VOL. XX.] 
B 11 
