294 
ACIIXOPTERYGII. 
27736. Pine specimen about 0-095 in length, with imperfect caudal 
fin ; Men at. Indications of teeth in the premaxilla are 
\ . distinct. Croizet Coll. 
li « 
28492. Two fine small specimens showing the vertebral column; 
Menat. Croizet Coll. 
28492 a. Caudal fragment of large fish ; Menat. Croizet Coll. 
The following species have also been referred to this genus, but 
are not represented in the Collection :— 
Prolehias gaudryi, H. E. Sauvage, Bull. Soc. Hist. Hat. Toulouse, 
viii. (1874), p. 190 (name only). Lehias gaudryi, 
^ p. H. E. Sauvage, Ann. Sci. Geol. vol. iv. (1873), art. no. 1, 
eo'b. . p. 261.—Upper Miocene ; Bacalmuto, Sicily. [Imperfect 
fish; Paris Museum of Hatural History.] 
Prolehias gohio, H. E. Sauvage, Bull. Soc. Hist. Hat. Toulouse, 
' (1374), p. 190. Lehias gohio, L. Agassiz {ex 
<7- -Munster MS.), Poiss. Eoss. vol. v. pt. ii. (1839), p. 49, 
P^* %• —Eignite; Senssen, Eichtelgebirge. [Inde- 
terminable distorted fish.] 
Prolehias meyeri, H. E. Sauvage, Bull. Soc. Hist. Hat. Toulouse, 
vol. viii. (1874), p. 190. Lehias meyeri^ L. Agassiz, tom. 
cit. (1839), p. 50, pi. xli. figs. 7, 8.—Upper Ohgocene ; 
Mayence Basin. [Imperfect fish.] 
Prolehias minimus, H. E. Sauvage, Bull. Soc. Hist. Hat. Toulouse, 
vol. viii. (1874), p. 190. Lehias minimus, T. C. Winkler, 
Descript. Poiss. Eoss. d’Oeningen (Hatuurk. Yerhandl. 
Holland. Maatsch. [2] vol. xiv. 1861), p. 42, pi. iv. 
fig. 14.—Upper Miocene ; Oeningen, Baden. [Imperfect 
small fish ; Teyler Museum, Haarlem.] 
A supposed Cyprinodont from the Middle Oligocene of Sieblos 
and Eisgraben, Bavaria, is also named Lehias eisgrahensis by T. C. 
Mhnkler, Archiv Mus. Teyler, vol. v. (1880), p. 98. [Imperfect 
fish; Geological Museum, Univ. Wiirzburg.] 
Hothing is known of the so-called Lehias tenuis and Lehias zignoi 
(Bosniaski, Atti Soc. Tosc. Sci. Hat.—Proc.-Yerb. vol. i. 1878-79, 
pp. xix, Iv), from the Upper Miocene of Gabbro, Tuscany. 
Genus PACHYLEBIAS, novum. 
A genus provisionally recognised on account of the remarkable 
hyperostosis of the vertebral axis. General proportions as in 
Prolehias ; teeth apparently bifid or trifid; dorsal fin almost or 
