ESPECIALLY MYCTOPHOIDS 137 
The cleithrum and coracoid meet at their anterior extremities, leaving a fenestra 
between the two bones. Posteriorly the coracoid projects backwards below the fin 
insertion. The mesocoracoid arch is relatively narrow. 
Vertebral column. The vertebral column consists of 45 vertebrae of which at 
least 20 and possibly as many as 22 are caudal. Each centrum is slightly longer 
than deep and is mesially constricted. The anteriormost neural arches are laterally 
compressed and expanded, not fused to the corresponding centra. More posteriorly 
the neural arches are more intimately connected to the centra. The precaudal 
vertebrae bear ventro-lateral transverse processes which support the pleural ribs. 
The ribs are long and narrow and decrease in size towards the end of the precaudal 
region. The first three or four caudal vertebrae have laterally flattened haemal 
arches without prominent spines. Haemal arches posterior to these are less 
expanded and are drawn out into backwardly curved haemal spines. 
Halec haueri (Bassani) 
(Text-figs. 63, 64) 
1879 Elopopsis haueri Bassani : 164. 
1946 MHalec haueri (Bassani) ; d’Erasmo: go. 
d’Erasmo lists the earlier references. 
DiAGNosis (emended). Halec species of standard length not exceeding 22 cm. 
Length of head with opercular apparatus greatly exceeds the maximum depth of 
the trunk, which is contained almost four times in the length from the pectoral arch 
to the base of the caudal fin. Length of the mandible exceeding the depth of the 
head at the occiput. Vertebrae 40 in number of which 18 are caudal. Dorsal fin 
with 13 or 14 rays, anal fin small and remote with g feeble rays. 
HoLotypre. Almost complete but badly weathered specimen in the Geologische 
' Bundesanstalt, Vienna, from the Lower Cenomanian of Lesina (= Hvar) in the 
Adriatic. 
MATERIAL. The holotype and several further specimens in the Naturhistorisches 
Museum, Vienna. The major part of the description was obtained from a single 
excellent specimen, number 1902.11.5, in the Bayerische Staatssammlung fir 
Palaontologie, Munich. All of the material is from the Lower Cenomanian of 
Lesina. 
DescripTion. Skull. The entire head region differs little from that of Halec 
eupterygius already described. The skull-roof is remarkably similar with the same 
arrangement of tubercular ornamentation, the enormous extent of the frontals, the 
unroofed post-temporal fossa and the prominent supraorbital bone. The jaw 
suspensorium is vertical with the quadrate condyle lying below the occiput as in 
Halec eupterygius. The dermal upper jaw is toothed, the maxilla bearing the 
characteristic forwardly inclined teeth at the posterior end. 
Certain of the bones of the hyoid arch are shown whereas they were not preserved 
in Halec eupterygius. Both the ceratohyal and epihyal are long and shallow and 
