PHYSOSTOMI. 
Pisces. 23 
Olyra hurmanica, sp. n., id. op. cit. p. 475, pi. cxi. fig. 5, Pegue Yomas. 
Ichthcdurus rohustus, sp. n., Jordan, Bull. Nat. Mus. x. p. 7G, figs. 3 & 4, 
Ohio. 
Amiurus erehennus, p. 85, figs. 19 & 20, Florida, hrunneus, p. 93, figs. 48 
& 49, Georgia ; id. 1. c. & Ann. Lyc. N. York, xi. p. 366, spp. nn. 
Noturus exilis, Nelson, Bull. 111. Mus. 1876, p. 51, figured, figs. 58 & 
59; miurus^ 100, figs. 60 & 61; eleutherus, p. 101, figs. 62 & 6.3, 
Tennessee and N. Carolina ; leptacanthus, p 102, figs. 64 & 65, Georgia ; 
sialis (= flavus)^ p. 102, figs. 68 & 69, Mississippi, Lakes, and Red River, 
Jordan, Bull. Nat. Mus. x., spp. nn. 
Noturus leptacanthus^ p. 352, eleutherus, p, 370, described ; id. Ann. Lyc. 
N. York, xi., Georgia, spp. nn. 
Platystoma luceri, sp. n., H. Weyenbergh, Nuevos Pescados, &c., p. 10, 
pi. iii. figs. 1-3, Santa F^. 
Arius. Figures and synonymy of A. burmanicus, Day, p. 458, pi. cv. 
fig. 4, arioides, C. V., = nenga, H. B., pi. civ. fig. 3, sumatranus, Benn., 
pi. cvii. fig. parvi 2 nnnis, Day (? chinta^ C. V. & Blkr.), pi. cxiii. fig. 1, 
suhrostratus, 0. V., pi. cvi. fig. 6, sona, H. B., pi. cv. fig. 2, andamanensis, 
Day, = thalassinuSf Riipp., pi. civ. fig. 4, & cvi. fig. 1, huchanani, Day 
(Pimelodus arius., H. B.), pi. cv. fig. 6, macr acanthus, Gthr., = gagora, 
H. B., pi. cvii. fig. 2, jatius, H. B., pi. cvi. fig, 4, tenuispinis, Day (P 
layardi, Gthr.), pi. cvii. fig. 5, boaJcii, Turner, = falcarius, Rich., p. 463, 
pi, cvi. fig. 5 ; Day, op. cit. 
Arius acutirostris, p. 469, pi. cvii. fig. 1, Burma, serratus, p. 462, pi. xcv. 
fig. 3, malaharicus, p. 464, pi. cvii. fig. 4, Canara, platystomus, p. 464, 
pi. cvii. fig. 3, Canara ; id. 1. c. spp. nn. 
A iliichthys punctata, Day, figured ; id. oj). cit. pi. cxiv. fig. 5. 
Osteogeniosus sthenocephalus, sp. n., id. op. cit. p. 469, pi. cviii. fig. 3, 
Moulmein. 
Glyptosternum lonah, Sykes, pi. cxiii. fig. 5 ; trilineatum, Blyth, pi. cxvi. 
fig. 3 ; botia, H. B., pi. cxiii. fig. 4 ; telchitta, H. B., pi. cxvi. fig. 2 ; 
madraspatanum, pi. cxvi. fig. 4, figured ; G. modestum, Day, = stoliczhce, 
Stoiml., = pcctinopterum, McClell., p. 499, pi. cxvi. fig. 6 ; id. op. cit. 
Euglypiostemum Uneatim, sp. n., id. op. cit. p. 500, pi. cxvi. fig. 7, 
J umna, 
Amblyceps tenuispinis, Blyth, = ccecutlens, Blyth, = mangois, H. B., = 
A Icysis kurzi, Day ; id. op. cit. p. 490, pis. cii. fig. 6, & cxvii. fig. 1. 
Doras alho-maculatus, sp. n., Peters, 1. c. p. 470, Calabozo. 
Malapterurus electricus. See Morniyridce, infra, p. 25 (Baluchiu). 
Plecostomus luetkeni, p. 217 (= Plima, Steind., nec Ltk.), and P. vail- 
lanti, p. 225, Steindachner, 1. c., Brazil : spp. nn. 
Chfetostomus nigro-lineatus, sp. n., Peters, 1. c. p. 471, pi. fig. 3, Calabozo. 
Rhinelepis parahyhce, p. 218, and agassizi, p. 228, Steindachner, 1. c., 
Brazil : spp. nn. 
fiisor rhabdophorus, H. B., figured ; Day, op. cit. pi. cxv. figs. 1 A, D. 
Otocinclus affinis and macuUcauda, spp. nn., Steindachner, 1. c. pp. 221 
^ 222, S.E. Brazil. 
Nangra, g. n. Br. 5 or 6, G ill-openings rather wide, and not, or only 
slightly, adherent to skin of isthmus. Thorax smooth. Upper surface 
