78 
SELACHII. 
The name Euryarthra was proposed by Agassiz for the pectoral 
lin of a large variety of EJiinobatus bugesiacus , in allusion to the 
great distance between the successive joints in the cartilaginous 
rays. 
Syrrhina 1 is also unrecognizable in a fossil state, and must be 
included here. 
Rhinobatus bugesiacus (Thiolliere). 
(?) 1836. Aellopos elongatus, G. von Munster, Neues Jahrb. p. 581 
(incompletely defined). 
1843. Euryarthra munsterii, L. Agassiz, Poiss. Foss. vol. iii. p. 382 
(incompletely defined). 
1849. Spathobatis bugesiacus, V. Thiolliere, Ann. Soc. Agric. Lyon [2] 
vol. i. p. 63. 
1854. Spathobatis bugesiacus, V. Thiolliere, Poiss. Foss. Bugev, pt. i. 
p. 7, pis. i., ii. 
1857. Spathobatis mirabilis, A. Wagner, Gelehrte Anzeig. bay. Akad. 
Wiss. vol. xliv. p. 292. 
1861. Spathobatis mirabilis, A. Wagner, Abli. li. bay. Akad. Wiss. 
math.-pkys. Cl., vol. ix. p. 313. 
1887. Spathobatis mirabilis, K. A. von Zittel, Handb. Palseont. vol. iii. 
p. 103, fig. 117 (woodcut). 
Type. Complete skeleton. 
Snout produced and acute; the two rostral ridges narrow, and 
separated by a broad groove throughout their length. Cleft of 
mouth straight. Disk moderately broad; length of pectoral fin 
nearly 2| times its breadth at the point of insertion. Skin covered 
with fine shagreen, without large tubercles or spines. 
As shown by Zittel’s figure, the so-called Spathobatis mirabilis 
is only a large variety of this species. The Bavarian specimen in 
the Munich Museum is 1-7 m. in length. 
Form. Loc. Lower Famineridgian (Lithographic Stone): Dept. 
Ain, France; Bavaria. 
P. 2099. Impression of a fossil, showing the complete fish, except 
the extremity of the snout and right pectoral fin; the 
position of the dorsal fins well seen ; Cirin, Ain. 
Egerton Coll. 
P. 2099 a. Disk, destroyed in advance of the mouth, and including 
a portion of the caudal region posteriorly; Cirin, Ain. 
Egerton Coll. 
1 Muller and Henle, Syst. Besckreib. Plagiostom. 1841, p. 113. 
