TERTJAliY YERTEBllATzV OF THE FAYOM. 
:nG 
jx'cloral spines are still articulatcxl with the shouhler-ginlle ; so far as can be seen tlie 
ornamentation was similar to that of the dorsal spine ; the length of these spines must 
have been about 17 cm., their width at the base 3’5 cm. 
P.10258. Large imperfect skull, wanting the posterior portion ; the greatest width of its anterior 
end is about 23 cm. 1‘resented hy the Eyyptian Government, 1904. 
The following specimens belong to various Siluroid fishes, but cannot be moi’e definitely 
(hdermined : — 
P. 10252. Anterior complex vertebra of a particularly long and slender form. Its length is 
IG'4 cm. ; the dejdh of the anterior face of the centrum about G cm. 
Presented by Baron Nopcsa, 1905. 
P.10253. Th ree anterior complex vertebrae, similar in form but of smaller size than last. 
Prese nted hy Baron Nopcsa, 1905. 
P. 10254. A number of anterior dorsal vertelu'se with short disc-like centra. One of these measures 
1'7 cm. in length at its ventral edge, while its height and width are about 5’3 cm. 
Presented by Baron No 2 ycsa, 1905. 
P.10255. Vertebrae, probably from further back in the column. The centra are much larger than 
those just described. They are in most cases deej)ly biconcave, and laterally are 
excavated by a pair of dorso-lateral depressions and a pair of ventro-lateral depressions. 
Presented by Baron Nopcsa, 1905. 
P.10241. Anterior complex vertebr* and the three succeeding disc-like vertebrm of an individual of 
lai’ge size. The length of the complex vertebra is IG'5 cm., the height of its anterior 
face about G cm. Presented by the Byypllaa Government, 1904. 
P. 10242. A series of united dorsal vertebrae with veiy short centra. The ])rocesses are well 
[)reserved in some part of this column. Presented by the Eyyptian Government, 1904. 
P. 10246. Two very large and massively constructed vertebrm. One of these bears well-develo])ed 
zvgapophyses, such as may be seen in the vertebral column Jhujrus. The peculiarity 
of these processes is that the articular surfaces of the anterior zygapoi»hyses look outwards 
and downwards, those of the jiosterior, here sessile on the centrum, u{)wards and a little 
inwards, the opposite to what usually occurs in the higher Vertebrates. 
C. 10201. Long and slender anterior complex vertebi-a, similar to P. 10252. Length IG cm. 
C. 10200. Much smaller and especially shorter complex vertebra. Length 9 cm. 
C. 10052. Series of six dor.sal vertebiae with disc-like centra. 
C. 10049. Large, deeply biconcave vertebrai similar to P. 10255. 
P. 10257. Imperfect pectoral spine. The anterior edge hears a row of transversely elongated 
tubercles near the tip ; the sides of the Si)ino also are tuberculate. Length so far as 
preserved IG'4 cm. 
