608 
ACTIIs’^OPTERTGlI. 
Rhombus ahropterijx, H, E.^Sauvage, Ann. Sci. Nat. [5] vol. xiv. 
(1870), art. no. 7, p. 5, and Ann. Sci. Geol. vol. iv. (1873), 
art. no. i. p. 101, fig. 4.—Upper Miocene ; Licata, Sicily. 
Rhombus bassaniaiius^ E. G. Kramberger, Beitr. Palaont. 
/f 3 S Oesterr.-Uugarns, vol. iii. (1883), p. 71, pi. xiii. figs. 1, 
o. 2.—Upper Miocene ; Uolje and Yrabce, Croatia. [Geo- 
- logical Museum, University of Agram.] 
Rhombus fitzingeri, J. J. Heck el, Neues Jahrb. 1849, p. 500 
(name only).—Middle Miocene; Margaretben, Vienna. 
[Court Museum, Vienna.] 
Rhombus heckeli, E. Kner, Denkschr. k. Akad. Wiss., math.- 
naturw. Cl. vol. xix. (1861), p. 75, pi. x. fig. 12; E. 
Bassani, Atti Soc. Veneto-Trent. Sci. Nat. vol. vii. (1880), 
p. 89.—Ibid. [Court Museum, Vienna.] 
Rhombus ligusticus^ C. Poilini, Sopra Alcuni Avanzi di Pesci 
Eossili Terziari (Milan, 1889), p. 92, fig. 7.—Lower 
Oligocene; Santa Giustina, Liguria. [Geological Museum, 
University of Genoa.] 
Rhombus parvulus, D. G. Kramberger, loc. cit. 1883, p. 72, 
pi. xiii. fig. 3.—Upper Miocene; Holje and Podsused, 
Croatia. [Geological Museum, University of Agram.] 
The undefined names Rhombus mimitus, R. nardii^ R. richiardii^ 
and R. sauvagei are given to fishes from the Upper Miocene of 
Gabbro, Tuscany, by Bosniaski, Atti Soc. Tosc. Sci. Nat.—Proc.- 
Verb. vol. i. (1878), p. xix, and Capellini, Mem. E. Accad. Lincei 
[3] vol. ii. disp. i. (1878), p. 285. Rhombus caudatus and R. cutrensis 
are also undefined names for fishes from the supposed Upper Miocene 
of Cutro, Calabria (Bosniaski, ibid. vol. i. 1879, p. Ixxxii). 
An otolith of a form not represented in the Collection has been 
described thus:— 
Otolithus (? Rhombus) rhenanus, E. Koken, Zeitschr. deutsch. geol. 
Ges. vol. xliii. (1891), p. 107, pi. v. fig. 11.—Middle 
Oligocene; Waldbockelheim. 
Genus PLEURONECTES (Artedi), Linnaeus. 
[Syst. Nat. ed. 10, 1758, p. 268.] 
Syn. Platessa, G. Cuvier, Eegne Animal, vol. ii. 1817, p. 220. 
Mouth small and unsymmetrical, with dentition more developed 
on the blind than on the coloured side; a single or double series of 
small teeth on the margin of the jaws, but none on the vomer or 
