SIM7RIDJE. 
327 
47527. Type specimen figured by Gunther, be. cit. 
Presented by Herr R. 1). M. Verbeek, 1876. 
47531. Second specimen noticed by Giinther, loe. cit. p. 435. 
Presented by Herr R. D. M. Verbeek, 1876. 
47528-30, 47537. Four specimens, the second being a very large 
tail. Presented by Herr R. D. M. Verbeek, 1876. 
An indeterminable fragment has been referred to the existing 
African genus Chrysichtliys , Jileeker, as follows : — 
Chrysichlhys (?) theobaldi, It. Lydekker, Palaeont. Indica, ser. x. 
vol. iii. (1886), p. 249, pi. xxxvii. fig. 4.— Siwalik 
Formation ; Punjab. [Hinder portion of cranium; Indian 
Museum, Calcutta.] 
Genus MACRONES, Dumeril. 
[Ichthyol. Anal. 1856, p. 484.] 
Head depressed, the cranial bones solid, more or less oma 
■nented and covered with thin skin ; an antero-posteriorl) elongate ( 
frontal vacuity. Gape of mouth moderately wide ; teeth minute 
and villiform, some on the vomer and palatines, lectoial fin 
with robust spine ; pelvic fin with six rays ; dorsal fin short 
b ased, with a robust spine and seven rays, in advance of the pelvic 
tins ; an adipose dorsal fin of moderate length ; anal fin short-base , 
with less than twenty rays ; caudal fin forked. Skin naked. 
An existing Asiatic genus. 
Macrones aor (Buchanan). 
182 2. Pimelodus aor, F. H. Buchanan, Fishes found in River Ganges, 
pp. 205, 379, pi. xx. fig. 68. , . 
1839. Rayrus aor, Cuvier & Valenciennes, Hist. Nat. 1 oiss. ' o . xn. 
p. 405. 
1864. Macrones aor, A. Gunther, Catal. I'ishes B. M. ' ob v> P - 1 • 
1886. Macrones aor, R. Lydekker, Palasont, Indica, ser. x. vol. m. 
p. 250, pi. xxxvi. fig. 5. 
-Type. Recent fish. 
Defined by Gunther, loc. cit. 
Form. <$■ Loc. Lower Pliocene : Siwalik Hills, India. Recent in 
freshwaters of India. 
40822. Imperfect skull and mandible, described and figured b} 
Lydekker, loc. cit. 
Presented by Charles Falconer, Esq., 1867. 
