(1) Dt ST. J. BOLKAY. 335 
11. Coronella austriaca Lavn. 
A complete basisphwenoid (Fig. 3.), a fragmentary basioceipital, 
a quadrate and four pieces of artieulare. This are the traces of the 
species from tlıis epoche. 
The bones agrees entirely with the recent and 
corresponding parts of (oronella austriaca Laur. 
Locality: Brassö, Fortyogöhegy. 
12. Vipera Gedulyi n. sp. 
(Plate XII, Figs. 9—12.) 
Nine prafrontals, two frontals, two fragments 
» a Fig. 3. Coronella 
of parıetal, one prooticum, one lateral oceipital, 19 ee am 
pieces of maxillary (7 with poison-fangs), 33 pieces of  Basisphanoid. 
transversum, 15 basisphs®noid, eighl basioceipital, 26 Magen. 4 X. 
articulare, and 206 separate poison-fangs. (Fig. 4.) 
Before te characterisalion of this species, I musi notice, that 
the cause for which I separated it from Vipera ammodyles L. is the 
relatively old age and the considerably larger’ size of this Viper. 
If we take the bones singly, we are surprised by 
the great degree of agreement which this species shows 
with Vipera ammodyltes. 
I deseribe in the following only the bones pre- 
senling at least some difference from the same parts 
of Vipera ammodytes L. 
On the anterior margin of the maxillary’s ascen- 
ding process there is a strong bony keel, which don’t 
permit us to see tlıe total outline of the process. This 
keel is obliterated on Vipera ammodytes, and the 
outline of tlıe whole process is clearly visible in front. 
On the posterior aspeet of maxillary there is a Gedulyin. Poison- 
deep transverse canal, which is never as deep as in fang. Polgardi. 
Vipera ammodytes. Magn. 5 X. 
Transversum differs from that of V. ammodytes 
that the ventral surface is not carved out totally, only at the dilated 
part of it. 
The posterior end of the basisphz®noid is in all cases examined 
drawn out in a point. 
From this point ı median keel takes its origine, this keel bifur- 
Fig. 4. Vipera 
