162 
ACTINOPTEHTGII. 
lower position of the pectoral fin, and by the greater number of 
scales in the vertical series below the vertebral axis. A somewhat 
deeper form than the typical fish is also named by Wagner, var. 
orbiculata. 
Form. Sf Loc. Upper Lias: Wiirtemberg. 
20563. The type specimen described by Egerton, loc. cit .; Boll. 
Purchased. 
Fragmentary specimens have also been described under £he 
following names, but there are no examples of these species in the 
Collection:— 
Tetragonolepis analis, Sir P. Egerton, Palseont. Indica, [4] vol. i. 
pt. ii. (1878), p. 5, pi. iii. fig. 1.—Lower Jurassic (Kota 
Group); Deccan, India. [Ventral part of trunk; Indian 
Museum, Calcutta.] (? Cleithrolepis.) 
Tetragonolepis rugosus , Sir P. Egerton, ibid. p. 6, pi. ii. fig. 2.— 
Ibid. [Portion of squamation; Indian Museum, Cal¬ 
cutta.] 
Tetragonolepis minor: Homoeolepis minor , A. Wagner, Gelehrte 
Anzeig. k. bay. Akad. Wiss. vol. 1. 1860, p. 100.—Upper 
Lias; Boll, Wiirtemberg. [Nearly complete fish ; Palae¬ 
ontological Museum, Munich.] 
Indeterminable fragments, probably not of this genus, have also 
been named as follows :— 
Tetragonolepis dubius , G. von Munster, Beitr. Petrefakt. pt. iv. 
(1841), p. 140.—Muschelkalk ; Esperstadt, Thuringia. 
[Scale.] 
Tetragonolejns ? obscurus , G a von Miinster, ibid. p. 140, pi. xvi. 
fig. 18.—St. Cassian Beds ; Tyrol. [Tuberculated bone.] 
Tetragonolepis quadratus, T. C. Winkler, Archiv. Mus. Teyler, 
vol. v. (1880), p. 136, pi. viii. fig. 35.—Muschelkalk; 
Hockberg, Wurzburg. [Scale.] 
An indeterminable specimen from a so-called Jurassic horizon 
at Bogoslowsk, Siberia, is described by G. Eischer de Waldheim 
under the new generic and specific name of Prionopleurus bronni 
(Bull. Soc. Imp. Nat. Moscou, vol. xxv. 1852, pt. i. p. 171, 
pi. iii. figs. 4—6). The description is unsatisfactory, and whether 
or not the fossil is related to Tetragonolepis remains to be 
determined. 
si* 
' TS} 
